GB449290A - Improvements in or relating to projectors, headlights or the like, especially for use on vehicles - Google Patents

Improvements in or relating to projectors, headlights or the like, especially for use on vehicles

Info

Publication number
GB449290A
GB449290A GB28830/35A GB2883035A GB449290A GB 449290 A GB449290 A GB 449290A GB 28830/35 A GB28830/35 A GB 28830/35A GB 2883035 A GB2883035 A GB 2883035A GB 449290 A GB449290 A GB 449290A
Authority
GB
United Kingdom
Prior art keywords
casing
light
reflector
plate
edge
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
GB28830/35A
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
Priority to GB28830/35A priority Critical patent/GB449290A/en
Publication of GB449290A publication Critical patent/GB449290A/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
    • 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

449,290. Vehicle &c. lamps. IZIKOWITZ, J. S., 16, Norr Malarstrand, Stockholm. Oct. 18, 1935, No. 28830. [Classes 75 (ii) and 75 (iv)] In a light-projector, suitable for use on air, sea, or road vehicles, or for general illumination purposes, and having two or more sources of light, the forwardly located source of light 10 and its associated reflector 12 being arranged within a casing structure 9, the rear source of light 13 is located at or adjacent the inner focus of an ellipsoidal or substantially ellipsoidal reflector 14, the effective surface of which is disposed mainly above a horizontal plane through the lower forward edge of the casing 9, the remote focus of the ellipsoidal reflector being located adjacent said edge or between said edge and the rear source of light. The ellipsoidal reflector is arranged with its optical axis horizontal or with a slight downward inclination, and additional screening means is provided for any reflecting surface below this axis. The light source 13 and the ellipsoidal reflector 14 are arranged within a supplementary casing 15 which may be formed integrally with, or separate and readily removable from, the casing 9. The casing 15 comprises a back wall 15a, a bottom wall 15b, two side walls 15c, and a front wall 15d which extends vertically between the side walls up to the forward edge of the casing 9. The bottom of the casing 9 may be arched, as shown in Fig. 4, or it may be flat, and the front wall 15d may be wholly or partially translucent and it mav serve as an illuminated number plate or the like. An inclined coloured or uncoloured window 18 may be hinged at 19 to the front edge of the bottom wall 15b and be secured by catches 20 on the lower surface of the casing 9. The light source 13 preferably comprises a slightly upwardly inclined electric lamp bulb' 22, Fig. 6, having its lower surface made reflecting. The bulb holder 23 is mounted on a plate 23a hinged at 24 to a plate 21 which carries the reflector 14 and is recessed to pass over the bulb. The latter and the reflector 14 are held in position by means of hooks which prevent turning of the plate 23a about the hinges 24, and by projections 26 on the inside of the window 18 which clamp the plate 21 against the bottom of the casing 15.
GB28830/35A 1935-10-18 1935-10-18 Improvements in or relating to projectors, headlights or the like, especially for use on vehicles Expired GB449290A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB28830/35A GB449290A (en) 1935-10-18 1935-10-18 Improvements in or relating to projectors, headlights or the like, especially for use on vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28830/35A GB449290A (en) 1935-10-18 1935-10-18 Improvements in or relating to projectors, headlights or the like, especially for use on vehicles

Publications (1)

Publication Number Publication Date
GB449290A true GB449290A (en) 1936-06-24

Family

ID=10281832

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28830/35A Expired GB449290A (en) 1935-10-18 1935-10-18 Improvements in or relating to projectors, headlights or the like, especially for use on vehicles

Country Status (1)

Country Link
GB (1) GB449290A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2430244A (en) * 2005-09-19 2007-03-21 Boeing Co Drag reduction fairing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2430244A (en) * 2005-09-19 2007-03-21 Boeing Co Drag reduction fairing
GB2430244B (en) * 2005-09-19 2009-04-01 Boeing Co Drag reduction fairing
US7784737B2 (en) 2005-09-19 2010-08-31 The Boeing Company Drag reduction fairing

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