GB496885A - Improvements in light projecting systems - Google Patents

Improvements in light projecting systems

Info

Publication number
GB496885A
GB496885A GB15697/37A GB1569737A GB496885A GB 496885 A GB496885 A GB 496885A GB 15697/37 A GB15697/37 A GB 15697/37A GB 1569737 A GB1569737 A GB 1569737A GB 496885 A GB496885 A GB 496885A
Authority
GB
United Kingdom
Prior art keywords
reflector
refractor
sleeve
casing
light
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
GB15697/37A
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.)
Research Corp
Original Assignee
Research Corp
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 Research Corp filed Critical Research Corp
Publication of GB496885A publication Critical patent/GB496885A/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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape 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
    • 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
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/265—Composite lenses; Lenses with a patch-like shape
    • 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
    • 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
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • 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
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/338—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having surface portions added to its general concavity
    • 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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

496,885. Light-projectors. RESEARCH CORPORATION. June 7, 1937, No. 15697. Convention date, July 27, 1936. [Classes 75 (ii), 75 (iii), and 75 (iv)] A vehicle lamp, spotlight, or like lightprojector adapted to produce a parallel or convergent beam of light, comprises a source of light F<1>, a refractor L with one or more spherical surfaces, and a concave reflector M the axial portion a-a of which is composed of a plurality of segmental zones a<1>-a<5> with foci f<1>-f<5> which reflect rays to consecutive portions 1-5 of the refractor, the curvature of each zone being such as to compensate for the spherical aberration of the corresponding portion of the refractor, as shown in Fig. 10. The refractor may comprise one or more lenses which may be vertically corrugated, and the light source may be disposed at or behind the principal focal point of the central portion of the refractor. The outer portion of the reflector M may be generated by completely or partially rotating about the axis of the projector a portion a, b, c of an ellipse having foci at F<1> and F<2>, and use may also be made of a spherical recuperating reflector S having its centre of curvature at F<1>, or a diaphragm, to produce a unilateral pattern in the beam. An opening J<1> may be made in the top, side, or rear of the reflector M so as to illuminate a jewel J. In the form shown in Fig. 5, two plano-convex lenses 16, 22 are associated with a reflector M the front portion 25 of which is conical, and the lamp includes a spherical reflector 47 which is cut away at 54, a plane or corrugated colour filter 28, a rearwardly bent diaphragm 29, and a breather comprising a shell 56 containing cotton wadding, glass wool, silk waste, or other dust-filtering material 58. The lamp is fixed in position by means of a clamping bolt engaging a threaded bore 4 in a metal block 2 inside the casing 1, a rubber or like gasket 7 separating the casing 1 from a cup-shaped washer 5 positioned in the opening 3 in the casing. The socket 43 for the electric light bulb 31 is adjusted in a resilient sleeve 49 by means of bolts 45, the sleeve 49 being carried by a ball-shaped block 33 engaging corresponding surfaces on the block 2 and on a thickened portion 38 of the casing 1, and locked in position by a bolt 40 which enters the block 2. Bolts 26 serve to secure the reflector M, the filter 28, the diaphragm 29, and the lens 22 to a sleeve 18 which is secured as at 19 to a sleeve 8 which, together with a sleeve 12, serves to hold the lens 16 in position.
GB15697/37A 1936-07-27 1937-06-07 Improvements in light projecting systems Expired GB496885A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US496885XA 1936-07-27 1936-07-27

Publications (1)

Publication Number Publication Date
GB496885A true GB496885A (en) 1938-12-07

Family

ID=21961141

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15697/37A Expired GB496885A (en) 1936-07-27 1937-06-07 Improvements in light projecting systems

Country Status (1)

Country Link
GB (1) GB496885A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2505910A3 (en) * 2011-03-29 2013-08-28 Automotive Lighting Reutlingen GmbH Motor vehicle headlamp with a semiconductor light source
FR2995968A1 (en) * 2012-09-26 2014-03-28 Valeo Vision LIGHTING AND / OR SIGNALING DEVICE FOR A VEHICLE COMPRISING A LENS AND A SOURCE
EP3159598A1 (en) * 2015-10-19 2017-04-26 Automotive Lighting Reutlingen GmbH Light module for a lighting device of a motor vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2505910A3 (en) * 2011-03-29 2013-08-28 Automotive Lighting Reutlingen GmbH Motor vehicle headlamp with a semiconductor light source
FR2995968A1 (en) * 2012-09-26 2014-03-28 Valeo Vision LIGHTING AND / OR SIGNALING DEVICE FOR A VEHICLE COMPRISING A LENS AND A SOURCE
WO2014048849A1 (en) * 2012-09-26 2014-04-03 Valeo Vision Lighting and/or signalling device for a vehicle, comprising a lens
EP3159598A1 (en) * 2015-10-19 2017-04-26 Automotive Lighting Reutlingen GmbH Light module for a lighting device of a motor vehicle

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