GB302656A - - Google Patents

Info

Publication number
GB302656A
GB302656A GB36947/28A GB3694728A GB302656A GB 302656 A GB302656 A GB 302656A GB 36947/28 A GB36947/28 A GB 36947/28A GB 3694728 A GB3694728 A GB 3694728A GB 302656 A GB302656 A GB 302656A
Authority
GB
United Kingdom
Prior art keywords
rays
filament
light
reflectors
prisms
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
GB36947/28A
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of GB302656A publication Critical patent/GB302656A/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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • 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
    • 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
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/162—Incandescent light sources, e.g. filament or halogen lamps
    • 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
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • 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
    • F21S41/32—Optical layout thereof
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated

Landscapes

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

Abstract

302,656. Borel, J. Dec. 19. 1927, [Convention date]. Addition to 301,309. Vehicle lamps.-In a vehicle lamp in which the source of light is partly or wholly surrounded by half-lenses which co-operate with inclined reflectors or prisms to intercept diverging rays of light and project them into beams which are directed forwardly and horizontally or slightly downwards, as described in the parent Specification, the halflenses are arranged to intercept laterally directed rays of light and co-operate with inclined reflectors or prisms to project such rays into beams which are also directed forwardly and horizontally or slightly downwards. In the form shown in Figs. 1 and 3, a filament 1 is disposed parallel with the, direction of travel, and on either side of the filament is arranged a lower half lens 3 and a vertical reflector 4 arranged at an angle of 45‹ to the direction of travel. An upper reflector 2 may be provided with its lower edge in the horizontal plane containing the filament 1, or two upper half lenses 5 and two slightly downwardly inclined reflectors 6 also may be employed, in which case the reflector 2 is apertured for the emission of rays of light reflected forwardly by the reflectors 6, whilst still forming a, screen 7 for the upwardly directed direct rays of tight from the filament 1. In the form shown in Figs. 5 and 6. rays of light directed rearwardly from a horizontal transverse filament 1 are intercepted by a lower half lens 8 and reflected forwardly by two adjacent prisms 9, 9<1>, or by two pairs of refectors 10, 10<1>. An upper half lens and suitably inclined prisms or reflectors also may be employed.
GB36947/28A 1927-12-19 1928-12-14 Expired GB302656A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR302656T 1927-12-19

Publications (1)

Publication Number Publication Date
GB302656A true GB302656A (en) 1929-10-31

Family

ID=31897872

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36947/28A Expired GB302656A (en) 1927-12-19 1928-12-14

Country Status (1)

Country Link
GB (1) GB302656A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767735C (en) * 1941-10-15 1953-04-16 Daimler Benz Ag Headlight system for vehicles, in particular motor vehicles
US3501626A (en) * 1964-02-18 1970-03-17 Anciens Ets Barbier Radiation condenser devices
US5871273A (en) * 1994-09-29 1999-02-16 Rockwell International Optical light piping reflector element for backlighting liquid crystal displays
FR2768490A1 (en) * 1997-09-13 1999-03-19 Bosch Gmbh Robert PROJECTOR UNIT FOR MOTOR VEHICLES
WO2002038413A1 (en) * 2000-11-09 2002-05-16 Daimlerchrysler Ag Device for vehicle lighting

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767735C (en) * 1941-10-15 1953-04-16 Daimler Benz Ag Headlight system for vehicles, in particular motor vehicles
US3501626A (en) * 1964-02-18 1970-03-17 Anciens Ets Barbier Radiation condenser devices
US5871273A (en) * 1994-09-29 1999-02-16 Rockwell International Optical light piping reflector element for backlighting liquid crystal displays
FR2768490A1 (en) * 1997-09-13 1999-03-19 Bosch Gmbh Robert PROJECTOR UNIT FOR MOTOR VEHICLES
WO2002038413A1 (en) * 2000-11-09 2002-05-16 Daimlerchrysler Ag Device for vehicle lighting
US6863412B2 (en) 2000-11-09 2005-03-08 Daimlerchrysler Ag Device for vehicle lighting

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