GB262898A - An anti-dazzle device for lamps - Google Patents

An anti-dazzle device for lamps

Info

Publication number
GB262898A
GB262898A GB27190/25A GB2719025A GB262898A GB 262898 A GB262898 A GB 262898A GB 27190/25 A GB27190/25 A GB 27190/25A GB 2719025 A GB2719025 A GB 2719025A GB 262898 A GB262898 A GB 262898A
Authority
GB
United Kingdom
Prior art keywords
zone
tinted
passed
rays
frosting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB27190/25A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STANISLAS JULIAN OSTROROG
Original Assignee
STANISLAS JULIAN OSTROROG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to BE337209D priority Critical patent/BE337209A/xx
Application filed by STANISLAS JULIAN OSTROROG filed Critical STANISLAS JULIAN OSTROROG
Priority to GB27190/25A priority patent/GB262898A/en
Publication of GB262898A publication Critical patent/GB262898A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
    • F21S41/125—Coloured light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/28—Cover glass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

262,898. Ostrorog, S. J. Oct. 29, 1925. Bulbs. - In an anti-dazzle device for vehicle lamps, searchlights, &c., the unreflected rays forming the innermost portion of the beam are passed through a relatively strongly tinted zone I<1>, the greater portion of the reflected light is passed through an untinted or weakly tinted translucent zone M<1>, preferably formed by frosting, whilst the more diverging reflected rays may be passed through a narrower transparent zone O<1> which is tinted less strongly than the zone I<1>. In all the zones the intensity of the tinting and frosting may be gradually reduced towards the front of the bulb. That part of the zone M<1> which is traversed by downwardly directed rays may be left transparent, and this zone may also be divided by narrow trans. parent sectors extending the full width or only a part of the width of the zone. The tinted and diffusing mediums may be composed of glass, cellulose compounds, artificial horn or the like, or of non-inflammable, damp and heat-proof material, such as that known under the registered trade mark " cellophane."
GB27190/25A 1925-10-29 1925-10-29 An anti-dazzle device for lamps Expired GB262898A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE337209D BE337209A (en) 1925-10-29
GB27190/25A GB262898A (en) 1925-10-29 1925-10-29 An anti-dazzle device for lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27190/25A GB262898A (en) 1925-10-29 1925-10-29 An anti-dazzle device for lamps

Publications (1)

Publication Number Publication Date
GB262898A true GB262898A (en) 1926-12-23

Family

ID=10255650

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27190/25A Expired GB262898A (en) 1925-10-29 1925-10-29 An anti-dazzle device for lamps

Country Status (2)

Country Link
BE (1) BE337209A (en)
GB (1) GB262898A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2567561A (en) * 1947-06-24 1951-09-11 Gen Electric Uniform intensity illumination for viewing boxes
US2999924A (en) * 1957-09-10 1961-09-12 Mottier Felix Anti-fog lighting projector
US4814960A (en) * 1986-05-14 1989-03-21 Liu P Dong Guang Glare control
US4823243A (en) * 1986-08-26 1989-04-18 Dedotec Optronische Und Mechanische Systeme Gmbh Miniature spotlight with extremely variable exit angle and constant even field of illumination

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2567561A (en) * 1947-06-24 1951-09-11 Gen Electric Uniform intensity illumination for viewing boxes
US2999924A (en) * 1957-09-10 1961-09-12 Mottier Felix Anti-fog lighting projector
US4814960A (en) * 1986-05-14 1989-03-21 Liu P Dong Guang Glare control
US4823243A (en) * 1986-08-26 1989-04-18 Dedotec Optronische Und Mechanische Systeme Gmbh Miniature spotlight with extremely variable exit angle and constant even field of illumination

Also Published As

Publication number Publication date
BE337209A (en)

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