CN1861533A - Producing method of molding body and intermediate - Google Patents
Producing method of molding body and intermediate Download PDFInfo
- Publication number
- CN1861533A CN1861533A CNA2006100778973A CN200610077897A CN1861533A CN 1861533 A CN1861533 A CN 1861533A CN A2006100778973 A CNA2006100778973 A CN A2006100778973A CN 200610077897 A CN200610077897 A CN 200610077897A CN 1861533 A CN1861533 A CN 1861533A
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- molding
- temperature
- shaping
- patrix
- manufacture method
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
- C03B11/06—Construction of plunger or mould
- C03B11/08—Construction of plunger or mould for making solid articles, e.g. lenses
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
- C03B11/12—Cooling, heating, or insulating the plunger, the mould, or the glass-pressing machine; cooling or heating of the glass in the mould
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/40—Product characteristics
- C03B2215/46—Lenses, e.g. bi-convex
- C03B2215/47—Bi-concave
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/72—Barrel presses or equivalent, e.g. of the ring mould type
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The provided method for optical element with well surface precision comprises: heating the pre-forming body, and pre-compressing in a forming die with the first upper and lower mould to obtain the intermediate, and taking final compression in a forming die with the second upper and lower mould, wherein both the first and second upper moulds include convex surface; the temperature of final compression is lower than the former value.
Description
Technical field
The present invention relates to obtain the manufacture method of molding of molding and the manufacture method of the shaping intermediate that can in described manufacture method, use by the repressed shaping of shaped materials such as opticglass.Especially, the present invention relates to adopt and implemented that precision machined shaping dies comes press forming and after press forming, need not the manufacture method that post-treatment is made moldinies such as optical element such as polish, particularly relate to the manufacture method of optical element with concave surface to being transferred face.
Background technology
As the method that is obtained molding by the repressed shaping of forming of glass base material, that has known has for example document 1～4 a described method.
Open in the flat 7-69650 communique (document 1) the spy, disclosed first mould (accepting mould) that melten glass is placed concave, make glass block be in the central position, suppress with second mould (patrix), molding in the middle of being shaped, then, under the state of middle molding attached to second mould, middle molding from first moulding/demoulding, the middle molding that is attached to second mould and the 3rd mould (counterdie) between the optical element manufacturing process of press forming.
Open in the 2000-281360 communique (document 2) the spy, disclosed under flow state drippage make with extrusion molding after the block parts of volume same amount of optics, be its manufacture method of roughly discoid optics base material with plane mould extrusion molding.
Open in the flat 9-52720 communique (document 3) the spy, disclosed melten glass has been dripped naturally, accept it while the counterdie of falling ejection gas, above the glass block of being accepted with the patrix press molding mould that predetermined shape is arranged, method with the preform of accurate moulded lens shape approximation is shaped.
Open in the flat 9-12318 communique (document 4) the spy, big and to cause the problem that weather resistance reduces or the mold center position is damaged of mould be purpose to solve when the molded lens deformation quantity of glass gob, proposed melten glass placed and accepted mould, on the one side that is piled up in the glass gob of accepting mould, formed concave shape or the depression of convex shape or the method for projection of final shaping thing.
Summary of the invention
As previously mentioned, in document 1 described manufacture method, after being had first mould (accepting mould) of concave to accept at melten glass, being middle molding, be attached at middle molding under the state of second mould and remove first mould, make shape with the 3rd mold pressing with second mould (patrix) press forming.Mention in the document 1, adopt this method,, be not easy to produce the problem of wall thickness deflection even melten glass drops on excentral position.
But, drop to when accepting mould at melten glass, have only by the distance that causes to fall and break the very big grade that becomes the rapid cooling of glass in the way that falls is studied, could be adjusted to melten glass and be suitable for preformed viscosity.That is to say that the low viscous melten glass after just having fallen scatters or melting in accepting mould, can not be pre-formed into as the desired shape of shaping intermediate.
And then, with document 1 described method melten glass is flow to and accept on the mould, accepting mould decline and obtaining fused glass block.This circulation must be synchronous with press forming, and this is inappropriate in actual production.But, according to the inventor's etc. discovery, in order to make the given volume of glass block, the take-off rate of restriction melten glass is crossed slowly and is difficult to.With document 1 described method, in press forming, need (with the withdrawing from of the compacting of second mould, second mould, with the 3rd mold pressing system, cooling etc.) multistep operation, be difficult to press forming synchronous.
Also have, in order to prevent that glass from melting on the shaping die surface, the coating that the enforcement release property is good etc. is favourable usually.Yet, the method described in the document 1, because of stabilization ground attached in second mould, release property can't improve, and can not prevent by the melting of causing with the close attachment of high-temperature fusion glass.
Also have, promptly use document 2 described methods, in the following time of glass drop of flow state, as mentioned above, have the problem that is difficult to the preliminary shaping shape that obtains expecting.Also have, record in the document 2: with plane mould shaping base material being made roughly discoid or extrusion molding is that the shape of the biconcave lens shape base material that is used as being shaped is good.Yet in the latter's occasion, for the block optics base material that convex surface covered, if carry out extrusion molding with punch, block optics base material is run away from forming face, be shape transferred thereon extremely difficult to the exact position of base material.
Mention in the document 3, if, obtain preform with the net shape approximate shapes that is shaped by precision glass with the method for document 3.Yet because this method is on the counterdie of ejection gas glass certainly to be pressurizeed, glass block is in the state that swims on the gas blanket when pressurization, moves easily, is difficult to centering adjustment, that is, its pressing position is not easy accurate centering adjustment.
With document 4 described methods, melten glass is dripped from crucible, separate in the stage of the glass of having accepted predetermined amount, use the extrusion mould press forming then, obtain the glass gob of desired shape.Yet this method is difficult to obtain the shaping thing of intended shape with top described the same, in addition, carries out press forming thereafter in the press forming mould, also becomes problem synchronously.
Really, when coming molding such as press forming glass optical component with accurate die pressing, the temperature of the shaping dies that need be when being shaped and the body that is formed (glass block that drips from nozzle and the preform that is pre-formed into pre-determined volume etc.) is carried out extremely accurate management.This is because in the time of must be in the body that is formed is in suitable range of viscosities, evenly be suitable for the compacting load of various glass materials and various intended shape.For example, when the body that is formed departs from the central position of shaping dies, if be subjected to the load produce the wall thickness deflection, make that the outward appearance of resulting molding is bad.More have, application of load under the thickness deflected condition has just produced the problem of the surface accuracy variation that causes because of the load at each position is inhomogeneous.Particularly, obtaining the occasion that meniscus shaped lens or biconcave lens etc. have the molding of concave surface, the variation of the inhomogeneous surface accuracy that causes of loading (can assess with interferometer after sphere is shaped) becomes very responsive.
Yet, approaching with the patrix that convex shape is arranged, contact for the body that is formed that for example covers by convex surface, because convex surface contacts with each other, slides, make the body that is formed run away from the forming face that contacts.Thus, be pressed shaping under the state of body in being offset to shaping dies that be formed, thereby produced the problem of wall thickness deflection as described above and surface accuracy variation.
By inventor's etc. discussion, (for example, glass viscosity is 10 the body that is formed of soft state
6～10
8.5The glass preform of dPas scope) is supplied to the shaping dies that is heated to than this low slightly temperature of body temperature degree that is formed, after firm press forming, under the state of shaping dies and molding maintenance close attachment, cool off, when can shortening the forming period time, obtain good wall thickness accuracy and surface accuracy easily.Below this method is referred to as manufacturing process A.
Or the shaping dies of the state of having accommodated the body that is formed is heated to the press forming temperature, and (for example, the be formed viscosity of body becomes 10
6～10
8.5The temperature of dPas scope), carries out press forming, under maintenance shaping dies and molding close attachment, cool off, obtain good wall thickness accuracy, surface accuracy easily.Below this method is called manufacturing process 2.
But, the further discussion by inventor etc. shows that for the high face shape molding of shaping difficulty that is required in recent years, aforesaid method is still abundant inadequately.Particularly, make that by the exploitation of high refracting glass material the compact optical instrument can practicability, in the lens of wall thickness (for example, following recessed meniscus shaped lens, the biconcave lens of center wall thickness 1mm), die temperature up and down during press forming is higher, finds that the variation of surface accuracy is very responsive.In any case the die temperature up and down when finding press forming is taken as and makes the viscosity of the base material that is formed become 10
7.5～10
11Temperature about dPas just obtains higher surface accuracy easily,, does not have the curvature change little (can suppress ァ ス, fine wrinkle) of irregular change of shape, off-design value that is.
Yet, even the die temperature up and down during press forming is set in above-mentioned scope, according to the shape of the molding of wishing to get, have between the patrix forming face of the convex surface of the base material that is formed and convex shape and be easy to generate slip, the situation of running away, be difficult to prevent the wall thickness deflection of the body that is formed.
Here, when the body that is formed contacts with the patrix forming face, (for example, upper and lower mould is warming up to and makes the viscosity of the body that is formed become 10 if improve up and down die temperature so that the body that is formed when not running away
6～10
8.5The temperature of dPas), just can not produce the wall thickness deflection.Yet the recessed meniscus shaped lens and the biconcave lens of shaping do not have sufficient surface accuracy.That is,, have temperature range that does not produce the wall thickness deflection and the temperature range that obtains surface accuracy different situation mutually according to the shape of the patrix forming face and the body that is formed.
On the other hand, when obtaining biconcave lens, must be disposed at the body that is formed on the lower die face of protruding forming face with press forming.Yet at this moment, the forming face that departs from counterdie owing to the central position of the body that is formed easily produces the wall thickness deflection, is easy to generate the molding bad order, surface accuracy is bad.
Also have, mainly be, in above-mentioned manufacturing process 2, be disposed at the body that is formed in the mould because of violent conveyance or stop, situation about departing from from the central position of mould is arranged in the way of mould conveyance, in the time of such, can not avoid wall thickness deflection, surface accuracy condition of poor.
Under described situation, the object of the present invention is to provide the means of the molding that obtains good surface accuracy, particularly optical element.Especially, the object of the present invention is to provide the means that are used to obtain good meniscus shaped lens of surface accuracy (the recessed meniscus shaped lens that the difficulty that particularly is shaped is high) and biconcave lens.
Means in order to achieve the above object are as follows.
[1] a kind of manufacture method, it is after a preform thermoplastic that is obtained by preliminary shaping by shaped material, in shaping dies with first upper die and lower die, obtain the intermediate that is shaped by precharge, gained shaping intermediate is finally pressurizeed in the shaping dies with second patrix and described counterdie, obtain the manufacture method of molding of the molding of desired shape
It is characterized in that described first patrix and second patrix have the forming face that contains convex surface,
Described precharge is by after placing described remollescent preform on the counterdie, the forming face of first patrix that is heated to first temperature is contacted with described preform and pressurize and carry out, by this precharge, obtain at least a portion of the convex shape of described forming face is transferred to the shaping intermediate on surface, and
Described final pressurization is by the shaping intermediate on the described counterdie is carried out with second patrix and the described counterdie press forming that are in second temperature lower than described first temperature.
[2] be to make the viscosity of described shaped material become 10 with described first temperature
6～10
8.5The temperature of dPas is the manufacture method of the molding described in the feature [1].
[3] be to make the viscosity of described shaped material become 10 with described second temperature
7.5～10
11The temperature of dPas is the manufacture method of the molding described in feature [1] or [2].
[4] with the viscosity of described remollescent preform 10
6～10
8.5The dPas scope is the manufacture method of the molding described in feature [1] or [2].
[5] be 110% manufacture method that terminates as the molding described in [1] of feature when above of the center wall thickness of desired molding shape with described precharge at the center of described shaping intermediate wall thickness.
Counterdie temperature during [6] with described precharge is to make the viscosity of described shaped material become 10
6～10
8.5The temperature of dPas is the manufacture method of the molding described in feature [1] or [2].
[7] temperature that is included in second upper die and lower die with described final pressurization is to make the viscosity of described shaped material become 10
7.5～10
11First manufacture method that is pressurised into the molding described in [1] of feature of carrying out during the temperature of dPas.
[8], the temperature of second upper die and lower die reduced to make the viscosity of described shaped material become 10 with after the described first pressurization beginning
11～10
13The temperature of dPas adopts then than the little load of first pressurization and carries out second manufacture method that is pressurised into the molding described in [7] of feature.
[9] described first patrix and second patrix are the manufacture method of the molding described in the same mould [1].
[10] face that contacts with first patrix of described preform is the manufacture method of the molding described in [1] of convex surface.
[11] one are used to obtain the manufacture method of the shaping intermediate of molding, it is characterized in that, make the viscosity of this shaped material become 10 being heated to by the resulting preform of preliminary shaping by shaped material
6～10
8.5The temperature of dPas is softening, described remollescent preform mounting is accepted on the mould in having concave surface or planar, by making the viscosity of described shaped material become 10 being heated to
6～10
8.5The temperature of dPas also has convex surface or forming face that the planar intermediate is shaped with patrix contacts pressurization with described remollescent preform, described intermediate is shaped uses the convex surface of contour forming face or at least a portion of planeform is transferred on the surface of preform, cooling obtains the intermediate that is shaped.
[12] having in the shaping dies of upper die and lower die by using the resulting shaping intermediate of the method described in [11] to supply with, press molding obtains the manufacture method of molding of the molding of desired shape.
[13] has the forming face that contains convex surface with described counterdie, described shaping intermediate has one side to have concave, with the face with described concave is the counterdie side, described shaping intermediate is supplied with the manufacture method of the molding described in [12] that described shaping dies is a feature.
[14] described press molding comprises that described shaping intermediate, upper die and lower die are 10 in the viscosity that is equivalent to described shaping intermediate
7.5～10
11[12] of the press molding that carries out under the temperature of dPas or the manufacture method of the molding described in [13].
The effect of invention
According to the present invention, can obtain good meniscus shaped lens of surface accuracy (the recessed meniscus shaped lens that the difficulty that particularly is shaped is high) and biconcave lens.
Description of drawings
Fig. 1: the concrete example of position correcting apparatus.
Be used to make the shaping dies of shaping intermediate and/or molding among Fig. 2: the embodiment 1 and 2.
Fig. 3: the interference fringe of the molding that obtains by embodiment 1.
Be used to manufacture the shaping dies of body among Fig. 4: the embodiment 2.
The building mortion that uses among Fig. 5: the embodiment 2.
Fig. 6: the interference fringe of the molding that obtains by comparative example 1.
Fig. 7: the interference fringe of the molding that obtains by comparative example 3.
The shaping dies that uses among Fig. 8: the embodiment 3.
Nomenclature
1,5,15 shaping dies
2,6,16 patrixes
3,7,17 counterdies
7a, 17a counterdie forming face
8 shaping intermediates
8a impresses face
9 intermediate die
18 moldinies
Embodiment
Come more detailed description the present invention below.
[the manufacture method I of molding]
The manufacture method of first molding of the present invention the preform thermoplastic that obtains by preliminary shaping by shaped material after, in shaping dies with first upper die and lower die, obtain the intermediate that is shaped by precharge, gained shaping intermediate is finally pressurizeed in the shaping dies with second patrix and described counterdie, obtain the manufacture method of molding of the molding of desired shape
It is characterized in that, described first patrix and second patrix have the forming face that contains convex surface, described precharge is by after placing described remollescent preform on the counterdie, making the forming face of first patrix that is heated to first temperature contact pressurization with described preform carries out, by this precharge, obtain at least a portion of the convex shape of described forming face is transferred to the shaping intermediate on surface, and
Described final pressurization is to be undertaken by the shaping intermediate on the described counterdie is carried out press forming with second patrix that is in second temperature lower than described first temperature and described counterdie.Below aforesaid method is called method I.
In method I, obtaining preform by shaped material by preliminary shaping, after this preform thermoplastic, precharge is then finally pressurizeed, and obtains the molding of desired shape.Below, above-mentioned preform, precharge, final pressurization are described successively.Be among the present invention, the viscosity of shaped material under the preset temperature (glass etc.), the viscosity of preform, the viscosity of shaping intermediate to be made no exception again.
Preform
In method I, the shaped material preliminary shaping is obtained preform, then, this preform heating after softening, is carried out precharge.Described shaped material is made of for example opticglass.At described shaped material is the occasion that is made of glass, and its glass types has no particular limits, but method I can be suitable for when making the thin-walled lens by the glass of high refractive index material.As previously mentioned, particularly, because the glass of high refractive index material, the scope of application of thin-walled lens is very wide, but when making them, is difficult to the surface accuracy that reaches high.To this,,,, still can make thin-walled lens with high surface accuracy even by the glass of high refractive index material owing to carry out precharge as described later and obtain molding through the shaping intermediate according to method I.
As the example of the glass types that is applicable to method I, can be listed below:
(1) contains P
2O
5, Nb
2O
5, WO
3, TiO
2, Bi
2O
3, Li
2O, Na
2O is must composition and Nb
2O
5, WO
3, TiO
2, Bi
2O
3The total amount be the glass of 25～45mol%;
(2) P
2O
5Be above-mentioned (1) described glass of 16～30mol%;
(3) refractive index n
dBe 1.75～2.0, Abbe number ν
dBe above-mentioned (1) or (2) described glass of 18～30;
(4) contain P
2O
5, SiO
2With alkalimetal oxide be must composition, refractive index n
dMore than 1.8, Abbe number ν
dAt the glass below 30;
(5) contain B
2O
325～45mol%, SiO
22～20mol%, La
2O
35～22mol%, ZnO15～29mol% are the glass of necessary composition;
(6) refractive index n
dBe 1.75～1.85, Abbe number ν
dBe above-mentioned (5) described glass of 18～30;
(7) contain B
2O
3, La
2O
3, Gd
2O
3, ZnO is must composition, refractive index n
dSurpass 1.82, Abbe number ν
dGlass less than 40.
Among the method I, the preliminary shaping that above-mentioned shaped material is carried out in advance pre-determined volume obtains preform.As described preform, have no particular limits, can use by for example melting and solidification or polish preformed glass preform.Particularly can use and melten glass dripped or run down into the accepting in the mould of suitable curvature, through preliminary shaping, cooling curing.Prevent by with melting of accepting that contacting of mould cause or be out of shape with use, adjusted glass viscosity for obtaining desired preliminary shaping shape, from accepting the face of the accepting ejection air-flow of mould, be under the contactless state refrigerative pre-forming device for preferred with the glass block of being accepted basically.As the shape of preform, can enumerate sphere or biconvex curve form etc. by shape that convex surface coated.Above-mentioned shape is owing to have a curved surface that does not have defective, and when therefore can form the high molding of surface accuracy in the press forming that carries out in the back, the production performance height is favourable.Also have, be easy to generate the slip of desire solution of the present invention, the problem of wall thickness deflection, solved this problem with the present invention by the level and smooth like this high precision preform that curved surface covered (for example glass preform).
Then, the preform thermoplastic that obtains like this.In method I, owing to be not that the glass block that is dripped by molten state is directly used, but using behind the preform reheat that is configured as pre-determined volume in advance.Like this, make the occasion of shaping intermediate with the glass block that use is dripped and compare, what help is freely conveniently to carry out the adjustment of appropriate viscosity scope as described later.Although according to the preform shape and the optical element shape of wishing to get, suitable viscosity is in the described range of viscosities in back, is different, can positively carry out such viscosity adjustment without miscellaneous operation such as the distance of fall that changes melten glass.More have, there is no need to make drip and the opportunity on (surface that following at least a portion the forming face shape of patrix is transferred to preform be referred to as impression) of impressing synchronous, also have, the preform of reheat with drip from molten state different, because surface temperature is than inner height, it is easy to the impression on surface to make, is suitable for that the surface portion from impression begins cooling when cooling, solidifies and obtain shape rapidly.
Described heating, can with preform is configured in the described precharge in back with in the shaping dies, heat this shaping dies and carry out.Also have, preform heat outside in precharge with shaping dies, softening after, again the remollescent preform is disposed at precharge with in the shaping dies, good.Described heating is to become 10 in the viscosity that makes shaped material
6～10
8.5DPas and carry out making viscosity become 10 for preferably
7～10
8DPas and carrying out to more preferably.Preform with above-mentioned scope viscosity is transporting easy deformation on the anchor clamps, and, melting easily with the contact surface that transports anchor clamps on.Thus, carry out preform heat outside in precharge with shaping dies, the remollescent occasion, the preferred floating discous anchor clamps that transport of ejection air-flow that use transport, under the state that anchor clamps is transplanted on the counterdie top position, carry out open and close operation etc., make the remollescent preform be in the discontiguous basically state of anchor clamps to fall to supplying in the counterdie.
If preform is spherical, according to the shape of counterdie forming face, the glass gob material that is disposed on the counterdie can be automatically moved to the central position.But, for preform positively being disposed at the central position of counterdie, preferably the position of the preform that places counterdie is revised.For example, be the preform position correction on the counterdie effective to the central position with guiding part that can open and close.The object lesson of such position correcting apparatus as shown in Figure 1.Position correcting apparatus shown in Figure 1 comprise can open and close preset pieces 11,12.Preset pieces 11,12 butt joints form rhombohedral peristome 10, at the inner peripheral surface of this peristome 10, form and offer the periphery contacting structure of the preform of counterdie.This position correcting apparatus is disposed on the counterdie under opened condition, after preform being supplied with in the counterdie, makes preset pieces approaching, separately (for example, repeatedly for several times), just can positively be disposed at preform the central position of counterdie.Particularly, be that flat biconvex curve form, counterdie is plane or the big occasions such as concave surface of radius-of-curvature at preform, preferably carry out such position correction.The details of relevant position correcting apparatus can be opened the 2003-104741 communique referring to the spy.
Precharge
In method I, aforementioned thermoplastic preform is carried out precharge.The employed shaping die of precharge has first upper die and lower die, and described first patrix has the forming face that comprises convex surface.Described counterdie has the forming face relative with the forming face of first patrix.
Precharge can be by after being disposed at the counterdie center to preform, first patrix fallen (or rise) to counterdie at once, and the feasible forming face that is heated to first patrix of first temperature contacts with preform and pressurizes and carry out.Thus, obtained at least a portion of the convex shape of the forming face of above-mentioned first patrix is transferred to lip-deep shaping intermediate.As described later, method I obtains the molding of desired shape by this shaping intermediate is finally pressurizeed with second patrix with the forming face that contains convex surface.As previously mentioned, in the surface transfer of shaping intermediate at least a portion of convex shape of first patrix, form concave shape.When pressurizeing with second patrix with the forming face that contains convex surface, can positioned centrally by this concave shape, the slip of the intermediate that therefore can prevent to be shaped can obtain all good molding of wall thickness accuracy, surface accuracy.Particularly, be the preform of convex surface for the face that contacts with described first patrix, owing to slide easily and generation wall thickness deflection, using method I is effective.
Be that during precharge, it serves as preferred that described preform is configured on the counterdie with contact condition again.If be disposed on the counterdie with levitated state and (for example, open flat 9-52720 communique referring to the spy), moving of preform makes the impression position be difficult to accurately be in central authorities.
Described first temperature is being to make the viscosity of shaped material become 10
6～10
8.5The temperature of dPas is preferred, becomes 10
7～10
8The temperature of dPas is for more preferably.Also have, as previously mentioned, the preform that carries out precharge is with thermoplastic to 10
6～10
8.5DPas viscosity is preferred, thermoplastic to 10
7～10
8DPas viscosity is for more preferably.When the viscosity of preform 10
6DPas is above, can easily be configured as desired preliminary shaping shape on counterdie, also has, if 10
8.5When dPas is following, be difficult between preform and the patrix forming face slide, impress in the centre easily.Like this, because the range of viscosities of preform is suitable, and the scope of the first patrix temperature (first temperature) is suitable, surface at preform, the preform surface of convex shape particularly, and do not produce between the convex surface of the first patrix forming face and slide, can be to preform the shape transferred thereon of the first patrix forming face protuberance summit annex.The result is, in the surface imprint concave shape of preform.
Counterdie temperature during described precharge is being to make the viscosity of shaped material become 10
6～10
8.5The temperature of dPas is preferred, makes this viscosity become 10
7～10
8The temperature of dPas is for more preferably.
The center wall thickness of the molding shape that the center wall thickness rate of the preform of described precharge is desired is big, be preferred for desired molding shape the center wall thickness 120～500%, being 150～400% for more preferably.Thus, described precharge finishes under the big stage at the center wall thickness of the desired molding shape of the center wall thickness rate that makes described shaping intermediate.Preferably, described precharge is 110% termination when above of the center wall thickness of desired molding shape at the center of described shaping intermediate wall thickness, 120～300% o'clock terminations for more preferably.Also have, described precharge can proceed to the center wall thickness of molding intermediate in below 95% of the center of preform wall thickness, preferred 30～60%.Also have, the pressing pressure during described precharge can wait suitably and set according to shape, the wall thickness of preform, for example, can be 100～300kgw/cm
2
Final pressurization
The resulting shaping intermediate of above-mentioned precharge finally pressurizes with second patrix with the forming face that comprises convex surface.Final pressurization is what to carry out in the shaping die that contains described second patrix and the counterdie with forming face relative with the forming face of second patrix.Although no matter described second patrix is to be that same mould or different moulds are all right with aforementioned first patrix,, in order to obtain the molding of good surface accuracy, being that same mould serves as preferred.Following explanation unless otherwise specified, is to carry out under the same mould at first patrix and second patrix.
After described precharge termination, be that patrix and shaping intermediate are temporarily thrown off, or the forming face of patrix keep and shaping intermediate state of contact can.Preferably, under the state that patrix forming face and shaping intermediate keep in touch, patrix is cooled to second temperature.At this moment, be the counterdie cooling preferred also simultaneously.With from described precharge zero hour, upper die and lower die begin cooling simultaneously for more preferably.Be when the handle mould different with first patrix uses as second patrix, can be heated to second temperature to second patrix and use again.The cooling of shaping dies, except taking the heating unit of the shaping dies outage, use air-jet method or in shaping dies circulating cooling medium etc. force the cooling way can.Then, when the patrix temperature is in second temperature range lower than first temperature,, obtain the molding of desired shape the shaping intermediate press forming on counterdie.
Described second temperature is than the low temperature of aforementioned first temperature, being to make the viscosity of shaped material become 10
7.5～10
11The temperature of dPas is preferred, makes this viscosity become 10
8.5～10
10.5The temperature of dPas is for more preferably.
Described final pressurization can be included in the second patrix temperature and be in and make the viscosity of shaped material become 10
7.5～10
11First pressurization of carrying out in the time of in the temperature range of dPas.This first pressurization can be to make the shaping intermediate that big deformation be arranged and the operation that is shaped to predefined desired center wall thickness.Also have, described predetermined center wall thickness is meant have been considered to be the predefined center of the molding that obtains final desired wall thickness wall thickness on the thermal contraction basis that cooling thereafter causes.At this moment, the counterdie temperature is not necessarily consistent good with the patrix temperature, but so that (viscosity of shaped material is 10 in same temperature range
7.5～10
11DPas) be preferred.And then upper die and lower die are 10 in the viscosity that is equivalent to shaped material all
8.5～10
11The temperature range of dPas is for more preferably.Carrying out above-mentioned first when pressurization, use enough load (for example, 50～200kgw/cm
2), can be shaped to predetermined center wall thickness.
In the recessed meniscus shaped lens that method I especially effectively uses, the biconcave lens, after the thermal contraction during cooling or in annealing operation thereafter (the carrying out as required) process, easy generating plane precision bad (being called the curvature change of ァ ス, fine wrinkle etc.).Therefore, in order to obtain good surface accuracy, be pressurised into preferably then to carry out second in the temperature lower than first pressed temperature in the above-mentioned first pressurization back.
Second pressurization is to make the viscosity of shaped material become 10 by upper and lower mould is cooled to together
11～10
13The temperature of dPas (temperature that does not require upper and lower mould is identical) is then used than the little load of first pressurization and is carried out.Thus, the center wall thickness that can make molding becomes net shape further for example changing about 5～200 μ m.
Between first pressurization is pressurizeed with second, serve as preferred with the close attachment of the forming face of not removing molding and upper and lower mould.That is, can be that the limit is carried out first and added flanging and further upper and lower mould is lowered the temperature, when being in the said temperature scope, the temperature of upper and lower mould adds load, carry out second pressurization.The load that uses during second pressurization for example is 25～100kgw/cm
2, with littler than first when pressurization serve as preferred.
After this, further under the situation that keeps forming face and molding close attachment upper and lower mould is cooled off, for example the viscosity when the shaping material becomes 10
13When dPas is following, upper and lower mould is separated, take out molding.Thus, can obtain all good molding of wall thickness accuracy, surface accuracy.
Second upper die and lower die that use in method I can be to have implemented the precise shape processed mould according to the shape of the molding of wishing to get.But as previously mentioned, first patrix that is used for precharge is that the precharge particular manufacturing craft different with second patrix is good.At this moment, compare with the convex shape of second patrix that is used for final pressurization, the convex shape of first patrix of precharge special use preferably has the more convex surface of larger radius of curvature.This is because avoided when press forming, inclosure atmosphere gas between the shaping intermediate after patrix and the precharge and make the cause of molding shape variation.When the convex shape of first or second patrix is aspheric surface,, enclose being shaped as preferably of phenomenon to select that above-mentioned atmosphere gas does not take place equally according to the mutual relationship of paraxial radius-of-curvature.
[manufacture method of shaping intermediate]
The manufacture method of shaping intermediate of the present invention is the manufacture method that is used to obtain the shaping intermediate of molding,
It is characterized in that, make the viscosity of this shaped material become 10 being heated to by the resulting preform of preliminary shaping by shaped material
6～10
8.5The temperature of dPas is softening,
Described remollescent preform mounting is accepted on the mould in having concave surface or planar,
By making the viscosity of described shaped material become 10 being heated to
6～10
8.5The temperature of dPas also has convex surface or forming face that the planar intermediate is shaped with patrix contacts pressurization with described remollescent preform, described intermediate is shaped uses the convex surface of contour forming face or at least a portion of planeform is transferred on the preform, cooling obtains the intermediate that is shaped.
The manufacture method of shaping intermediate of the present invention can be advantageously used in manufacturing process A and manufacturing process B provides the shaping intermediate, promptly, the body that is formed of soft state (shaping intermediate) offers and is heated to than its shaping dies under low temperature slightly, carry out press forming at once, afterwards, refrigerative method (manufacturing process A) under the situation that keeps shaping dies and molding close attachment, the shaping dies of having accommodated the body that is formed (shaping intermediate) state is heated to the press forming temperature, carry out press forming, refrigerative method (manufacturing process B) under the situation that keeps shaping dies and molding close attachment.It is that same mould or different mould are all right that intermediate is shaped with patrix patrix of use when the shaping intermediate being pressurizeed (the following press forming that simply is called).Also have, the described mould of accepting can be used and the same mould of counterdie that uses when the press forming.As patrix, the mesosome occasion of special-purpose patrix that is shaped in use, use with the patrix that is used for press forming be same mould or use possess have than its have the protruding forming face of larger radius of curvature more shape relation such as (select during aspheric surface) mutually paraxial radius-of-curvature or flat forming face for preferred.This has convex surface or planar intermediate to be shaped to use patrix, makes the viscosity of shaped material become 10 being heated to
6～10
8.5Under the state of the temperature of dPas, and contact above the preform, form the impression of plane or concave.Owing to being heated to, preform make the viscosity of shaped material become 10
6～10
8.5The temperature of dPas, softening, its surperficial upward viscosity becomes enough low, even contact with patrix with the intermediate shaping of convex shape or planeform, does not also produce and runs away, and can impress in desired position (central position).After this, although can from shaping dies, take out the shaping intermediate immediately, take out to well it is cooled to about glass transition temperature Tg+50 ℃ the back.The shaping intermediate of the band impression that takes out can use for manufacturing process A or manufacturing process B at any time.
The intermediate shaping is than being pressed into the radius-of-curvature little convex surface of shape with patrix (the molding shape that precision sizing is extremely desired) with the radius-of-curvature of patrix, when press forming, press forming can not contact with the recess of shaping intermediate with the protuberance of patrix, has probably that atmosphere gas residues in this gap and hinders the surface accuracy of molding.Therefore, when press forming, preferably for the convex surface center that makes the press forming patrix at first can positively contact with the embossed locations center of shaping base material, and intermediate be shaped with the radius-of-curvature of patrix and press forming with the radius-of-curvature of patrix identical or the former than the latter big and to intermediate shaping adjust with the shape of patrix.
In addition, described in other details of the manufacture method of shaping intermediate of the present invention such as the previous method I.
Also have, among the present invention, form aforementioned impression successively on the two sides of preform, the shaping intermediate of making the dual recess shape is good.This can be applicable among the aforesaid manufacturing process A, 2 any one, and is very useful to the shaping of biconcave lens.
[the manufacture method II of molding]
The manufacture method of second kind of molding of the present invention is that the shaping intermediate that the manufacture method by aforementioned shaping intermediate of the present invention obtains is offered in the shaping dies of upper die and lower die, and press molding obtains the manufacture method of the molding of desired shape.Below, aforesaid method is referred to as method II.
In method II, being the molding of desired shape by the resulting shaping intermediate of the manufacture method of intermediate of the present invention press forming.Like this,, can under the situation that does not produce slip and wall thickness deflection, carry out press forming, can obtain the molding of good wall thickness accuracy and surface accuracy owing to used the middle molding that has impression.
What method II used is the counterdie with the forming face that contains convex surface, simultaneously can the face with aforementioned concave as counterdie one side will have transfer printing the shaping intermediate that is shaped with the formed concave of convex shape at least a portion of patrix of aforementioned intermediate offer aforementioned shaping dies.It is relative and can stably carry out the advantage of press forming with regard to convex shape that the concave that makes the shaping intermediate and counterdie are arranged like this.
Method II is to comprise that described shaping intermediate, upper die and lower die are 10 in the viscosity that is equivalent to described shaping intermediate
7.5～10
11The press molding that carries out under the temperature of dPas is for preferred.Described in other details of method II such as the previous method I.
[embodiment]
Illustrate in greater detail the present invention with embodiment below.
Embodiment 1 (manufacturing of recessed meniscus shaped lens (center wall thickness 1mm's))
Form the shaping of intermediate with shaping dies shown in Figure 21.
Is the phosphoric acid by high refractive index, high chromatic dispersion that opticglass A is (with forming that mol% represents: 22P
2O
5-19Nb
2O
5-8WO
3-5TiO
2-4Bi
2O
3-20Li
2O-11Na
2O-2K
2O-4B
2O
3-3BaO-2ZnO, thermal physical property parameter: transition temperature Tg=454 ℃, groove sinks temperature T s=508 ℃, optical constant n
d=1.87427, ν
d=22.37) press preform (flat biconvex curve form, the center wall thickness 5mm) heating that pre-determined volume is shaped in advance, softening to viscosity 10
7.5DPas (565 ℃) is disposed on the counterdie shown in Figure 2 (concave) 3 afterwards, uses 150kgw/cm
2Pressure compacting (precharge), the part of the convex shape of patrix 2 is transferred, and has obtained the surperficial shaping intermediate that has formed concave shape.What precharge was adopted is that the viscosity that is heated to the glass gob material becomes 10
7.5The viscosity of glass gob material becomes 10 to the patrix of the temperature of dPas with heating so far
7.5The counterdie 3 of the temperature of dPas.Be that the pressing pressure in embodiment, comparative example is the set(ting)value of press again.At this moment, the center wall thickness of shaping intermediate is 2mm.
Then, keeping under shaping intermediate and the mould close attachment, the temperature of patrix 2 and counterdie 3 is dropped to making the viscosity of glass gob material become 10
9.5The temperature of dPas (515 ℃) afterwards, is used 150kgw/cm
2Pressure compacting (first pressurization).Set first pressurization make upper and lower mould near the time distance be numerical value than the big 10 μ m of wall thickness of the lens of wishing to get.
Then, keep under the close attachment, the temperature of patrix 2 and counterdie 3 is dropped to make the viscosity of described glass gob material become 10
12The temperature of dPas (470 ℃) is used 100kgw/cm afterwards again
2Pressure compacting (second pressurization).And then, keeping under the forming face and molding close attachment of shaping dies, upper and lower mould 2,3 is cooled off, become 10 in the viscosity of aforementioned glass gob material
13During the following temperature of dPas, upper and lower mould is separated, take out molding (recessed meniscus shaped lens).By confirming that with the interference fringe of fizeau interferometer the surface accuracy of resulting molding shows, has obtained enough surface accuracies when obtaining wall thickness accuracy.Fig. 3 shows interference fringe.
Embodiment 2 (manufacturing of recessed meniscus shaped lens)
The shaping intermediate that the method for using similarly to Example 1 is shaped after the quick cooling, takes off and gets patrix in shaping dies, takes out the shaping intermediate.Be that as required, this shaping intermediate also can at room temperature be preserved again.
Then, with shaping dies shown in Figure 45, be performed as follows the recessed meniscus shaped lens of press forming.
Open shaping dies shown in Figure 45, resulting shaping intermediate 8 is placed its inside.Specifically be, keep patrix 6 to insert the intermediate die 9 of state, counterdie 7 is fallen, in counterdie forming face (concave) 7a, 8a is disposed at patrix 6 one sides the impression face of shaping intermediate 8 (concave shape face).Transporting, disposing of shaping intermediate 8 can adopt known transporter (having the mechanical manipulator of absorption layer etc.) to carry out.Shaping intermediate 8 is disposed on the counterdie forming face 7a, counterdie 7 is promoted, reintegrate in the intermediate die 9.At this moment, by the thickness of shaping intermediate 8, make patrix become the state that promotes above than intermediate die slightly.
The shaping dies of this state is transferred, carried out press forming with building mortion shown in Figure 5 simultaneously.In the building mortion shown in Figure 5, shaping dies is loaded on the rotary turntable, between can each treatment chamber of independent controlled temperature successively off and on rotation move, can in each treatment chamber, implement the processing of being scheduled to.
Specifically, in heating chamber, it is 10 that the shaping dies of having accommodated the shaping intermediate is heated to the viscosity that is equivalent to the glass gob material
9.5The temperature of dPas (515 ℃) is sent into the first compacting chamber afterwards, uses 150kgw/cm
2Load compacting (first pressurization).Then, delivering to the second compacting chamber, is 10 being cooled to the viscosity that is equivalent to the glass gob material
12The temperature of dPas (470 ℃) afterwards, is used 100kgw/cm
2Load suppress (second pressurization) once more.Surface accuracy by the molding of confirming with the interference fringe of fizeau interferometer to obtain like this (recessed meniscus shaped lens) shows, and is the same with Fig. 3, obtained enough surface accuracies.
Comparative example 1
Except not carrying out the described precharge, carry out press forming with method similarly to Example 2, obtained having the molding of wall thickness deflected condition.Fig. 6 shows the interference fringe of the fizeau interferometer of resulting molding.As shown in Figure 6, produce ァ ス, do not obtained the molding of good surface accuracy.This is considered to owing to produced the position skew in the stage that the shaping dies of having accommodated preform is transplanted on the press forming position, carries out under the offset shifting state on the throne that press forming caused.
Comparative example 2
With shaping dies shown in Figure 21, carry out press forming by following condition and obtain molding.
Is described phosphoric acid that the preform (flat biconvex curve form, center wall thickness 5mm) that opticglass A is shaped in advance by pre-determined volume is heated to viscosity 10
7.5After dPas (565 ℃) is softening, be disposed on the counterdie shown in Figure 2 (concave) 3, using the viscosity that is heated to the glass gob material is 10
9.5The viscosity of glass gob material is 10 to the patrix 2 of the temperature of dPas (515 ℃) with heating so far
9.5The counterdie 3 of the temperature of dPas is at 150kgw/cm
2Down compacting of pressure (first pressurization) afterwards, the viscosity that the temperature of patrix 2 and counterdie 3 is dropped to this glass gob material is 10
12The temperature of dPas (470 ℃) is used 100kgw/cm afterwards again
2Pressure compacting (second pressurization).And then, under forming face that keeps shaping dies 1 and molding close attachment, upper and lower mould is cooled off, become 10 in the viscosity of aforementioned glass gob material
13During the following temperature of dPas, upper and lower mould is separated, take out molding (recessed meniscus shaped lens).Interference fringe by the gained molding that obtains with fizeau interferometer is the same with Fig. 6.As seen resulting lens have produced ァ ス, produce the wall thickness deflection.
Comparative example 3
With shaping dies shown in Figure 21, carry out press forming by following condition and obtain molding.
Is described phosphoric acid that the preform (flat biconvex curve form, center wall thickness 5mm) that opticglass A is shaped in advance by pre-determined volume is heated to viscosity 10
7.5After dPas (565 ℃) is softening, be disposed on the counterdie shown in Figure 2 (concave) 3, use the viscosity that is heated to the glass gob material to become 10
7.5The viscosity of glass gob material becomes 10 to the patrix 2 of the temperature of dPas (565 ℃) with heating so far
7.5The counterdie 3 of the temperature of dPas is at 150kgw/cm
2Down compacting of pressure (first pressurization) afterwards, the viscosity that the temperature of patrix 2 and counterdie 3 is dropped to this glass gob material becomes 10
12The temperature of dPas (470 ℃) is used 100kgw/cm afterwards again
2Pressure compacting (second pressurization).And then, under forming face that keeps shaping dies 1 and molding close attachment, upper and lower mould is cooled off, become 10 in the viscosity of aforementioned glass gob material
13During the following temperature of dPas, upper and lower mould is separated, take out molding (recessed meniscus shaped lens).
Fig. 7 shows the interference fringe of the gained molding that obtains with fizeau interferometer.Although on the gained lens, do not see the ァ ス that shows the wall thickness deflection, to see irregularly, the face shape is bad.Under the state that does not have preform laterally to run away, carry out press forming although be, but above-mentioned shape defect is regarded as can not revising it owing to due to the part demoulding when near all suppress to produce the final lens wall thickness the cooling even find to carry out second pressurization under low viscosity state.
Embodiment 3
Press the manufacturing biconcave lens with the described shaping dies 15 of Fig. 8.
Counterdie and the patrix that the forming face of convex shape arranged that apparatus has a forming face of planeform carries out precharge similarly to Example 1.The shaping intermediate that the precharge postcooling is taken out is configured on the counterdie shown in Figure 8 17, is transplanted in the embodiment 2 employed building mortions, carries out press forming under condition similarly to Example 2.Present embodiment has used counterdie with convex shape forming face 17a 17 as shown in Figure 8 and the patrix 16 with convex shape forming face 16a.Here, the impression face (concave) of shaping intermediate is disposed at the shaping intermediate in the shaping dies 15 as a side of counterdie 17.The interference fringe that resulting molding (biconcave lens) 18 usefulness fizeau interferometers obtain is estimated.The same with embodiment 1,2, enough surface accuracies are arranged.
Comparative example 4
Except not carrying out the preliminary shaping, use method similarly to Example 3 to obtain molding.The interference fringe of the gained molding that obtains with fizeau interferometer is the same with Fig. 6.Owing to comparative example 4 carries out press forming without the shaping intermediate, because of transverse excursion produces the wall thickness deflection.Therefore, produce ァ ス, can not obtain having the molding of good surface accuracy.
Application possibility on the industry
The formed body of being made by the present invention is the optical element such as lens preferably. The present invention is particularly suitable for Manufacturing in biconcave lens or meniscus shaped lens. As meniscus shaped lens, at recessed meniscus shaped lens Shaping in obtain especially significant effect. This is to use mould because the concave surface of meniscus shaped lens is shaped The curvature of tool shape is littler, produces the wall thickness deflection with easy slip of convex surface of shaping base material, And when producing slightly the wall thickness deflection, surface accuracy just significantly variation (surface accuracy changes by wall thickness Deflection and the inhomogeneous sensitiveness height of load that causes). The present invention is particularly for thin-walled (center Concave-concave or recessed falcate that wall thickness 1mm is following) lens effect is remarkable.
Claims (14)
1. the manufacture method of a molding, it is after a preform thermoplastic that is obtained by preliminary shaping by shaped material, in shaping dies with first upper die and lower die, obtain the intermediate that is shaped by precharge, gained shaping intermediate is finally pressurizeed in the shaping dies with second patrix and described counterdie, obtain the manufacture method of the molding of desired shape
It is characterized in that, described first patrix and second patrix have the forming face that contains convex surface, described precharge is by after placing described remollescent preform on the counterdie, the forming face of first patrix that is heated to first temperature is contacted with described preform and pressurize and carry out, by this precharge, obtain at least a portion of the convex shape of described forming face is transferred to the shaping intermediate on surface, and
Described final pressurization is by the shaping intermediate on the described counterdie is carried out with second patrix and the described counterdie press forming that are in second temperature lower than described first temperature.
2. the manufacture method of the described molding of claim 1 is characterized in that described first temperature is to make the viscosity of described shaped material become 10
6～10
8.5The temperature of dPas.
3. the manufacture method of claim 1 or 2 described moldinies is characterized in that described second temperature is to make the viscosity of described shaped material become 10
7.5～10
11The temperature of dPas.
4. the manufacture method of claim 1 or 2 described moldinies, the viscosity that it is characterized in that described remollescent preform is 10
6～10
8.5The dPas scope.
5. the manufacture method of the described molding of claim 1 is characterized in that described precharge is 110% the stopping when above of center wall thickness of desired molding shape at the center of described shaping intermediate wall thickness.
6. the manufacture method of claim 1 or 2 described moldinies, the counterdie temperature when it is characterized in that described precharge is to make the viscosity of described shaped material become 10
6～10
8.5The temperature of dPas.
7. the manufacture method of the described molding of claim 1 is characterized in that the temperature that described final pressurization is included in second upper die and lower die is to make the viscosity of described shaped material become 10
7.5～10
11First pressurization of carrying out under the temperature of dPas.
8. the manufacture method of the described molding of claim 7 is characterized in that after the described first pressurization beginning, the temperature of second upper die and lower die is reduced to make the viscosity of described shaped material become 10
11～10
13The temperature of dPas adopts then than the little load of first pressurization and carries out second pressurization.
9. the manufacture method of the described molding of claim 1, wherein said first patrix and second patrix are same moulds.
10. the manufacture method of the described molding of claim 1, wherein the face that contacts with first patrix of described preform is a convex surface.
11. the manufacture method of the intermediate that is shaped, it is for obtaining the manufacture method of the shaping intermediate that molding uses, it is characterized in that, becoming 10 by shaped material by the viscosity that the resulting preform of preliminary shaping is heated to this shaped material
6～10
8.5The temperature of dPas is softening, described remollescent preform mounting is accepted on the mould in having concave surface or planar, by the viscosity that is heated to described shaped material is become 10
6～10
8.5The temperature of dPas also has convex surface or be shaped forming face with patrix of planar intermediate contacts with described remollescent preform and pressurizes, described intermediate is shaped uses the convex surface of contour forming face or at least a portion of planeform is transferred on the surface of preform, cooling obtains the intermediate that is shaped.
12. the manufacture method of a molding is characterized in that, having in the shaping dies of upper die and lower die by using the resulting shaping intermediate of the described method of claim 11 to supply with, press molding obtains the molding of desired shape.
13. the manufacture method of the described molding of claim 12, it is characterized in that described counterdie has the forming face that contains convex surface, described shaping intermediate has one side to have concave, is the counterdie side with the face with described concave, and described shaping intermediate is supplied with described shaping dies.
14. the manufacture method of claim 12 or 13 described moldinies is characterized in that described press molding comprises that described shaping intermediate, upper die and lower die are 10 in the viscosity that is equivalent to described shaping intermediate
7.5～10
11The press molding that carries out under the temperature of dPas.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005137072 | 2005-05-10 | ||
| JP2005137072A JP4677279B2 (en) | 2005-05-10 | 2005-05-10 | Manufacturing method of molded body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1861533A true CN1861533A (en) | 2006-11-15 |
Family
ID=37389077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100778973A Pending CN1861533A (en) | 2005-05-10 | 2006-05-10 | Producing method of molding body and intermediate |
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| Country | Link |
|---|---|
| JP (1) | JP4677279B2 (en) |
| CN (1) | CN1861533A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102753491A (en) * | 2010-01-06 | 2012-10-24 | 日本电气硝子株式会社 | Glass preform and method of manufacture thereof |
| CN103038182A (en) * | 2010-05-17 | 2013-04-10 | 康宁股份有限公司 | Laminable shaped glass article and method of making the same |
| CN106966570A (en) * | 2015-12-28 | 2017-07-21 | Hoya株式会社 | The manufacture method of optical element and the manufacture device of optical element |
| CN108689590A (en) * | 2018-06-26 | 2018-10-23 | 中国建筑材料科学研究总院有限公司 | The method of chalcogenide glass precision moulded formation |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5414222B2 (en) * | 2007-09-25 | 2014-02-12 | Ｈｏｙａ株式会社 | Preform for precision press molding and method for manufacturing optical element |
| JP5430092B2 (en) * | 2008-07-11 | 2014-02-26 | キヤノン株式会社 | Optical element molding method |
| JP5412674B2 (en) * | 2010-03-05 | 2014-02-12 | 富士フイルム株式会社 | Optical element molding method and optical element molding apparatus |
| JP6032951B2 (en) * | 2012-06-04 | 2016-11-30 | キヤノン株式会社 | Optical element manufacturing method |
| JP6132481B2 (en) * | 2012-06-07 | 2017-05-24 | キヤノン株式会社 | Optical element manufacturing method |
| US20240246849A1 (en) * | 2023-01-19 | 2024-07-25 | Aac Optics (Changzhou) Co., Ltd. | Lens forming method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3886022B2 (en) * | 1997-07-30 | 2007-02-28 | Ｈｏｙａ株式会社 | Method and apparatus for producing glass molded body |
| JP3825978B2 (en) * | 2001-02-19 | 2006-09-27 | キヤノン株式会社 | Optical element molding method |
-
2005
- 2005-05-10 JP JP2005137072A patent/JP4677279B2/en not_active Expired - Fee Related
-
2006
- 2006-05-10 CN CNA2006100778973A patent/CN1861533A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102753491A (en) * | 2010-01-06 | 2012-10-24 | 日本电气硝子株式会社 | Glass preform and method of manufacture thereof |
| CN103038182A (en) * | 2010-05-17 | 2013-04-10 | 康宁股份有限公司 | Laminable shaped glass article and method of making the same |
| CN106966570A (en) * | 2015-12-28 | 2017-07-21 | Hoya株式会社 | The manufacture method of optical element and the manufacture device of optical element |
| CN108689590A (en) * | 2018-06-26 | 2018-10-23 | 中国建筑材料科学研究总院有限公司 | The method of chalcogenide glass precision moulded formation |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4677279B2 (en) | 2011-04-27 |
| JP2006315877A (en) | 2006-11-24 |
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