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GB437001A - Improvements in lamps with lenses and reflectors - Google Patents

Improvements in lamps with lenses and reflectors

Info

Publication number
GB437001A
GB437001A GB2405/35A GB240535A GB437001A GB 437001 A GB437001 A GB 437001A GB 2405/35 A GB2405/35 A GB 2405/35A GB 240535 A GB240535 A GB 240535A GB 437001 A GB437001 A GB 437001A
Authority
GB
United Kingdom
Prior art keywords
lens system
dispersing
lens
cylindrical surfaces
central
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
GB2405/35A
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
Publication of GB437001A publication Critical patent/GB437001A/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
    • F21S41/14—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
    • 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
    • F21S41/164—Incandescent light sources, e.g. filament or halogen lamps having two or more filaments
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • 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

Landscapes

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

Abstract

437,001. Vehicle &c. lamps. DIETRICH, F. R., 227, Freimannerstrasse, Freimann, Munich, Germany. Jan. 24, 1935, Nos. 2405, 2406, 2407, 2408, and 2409. Convention dates, Jan. 25, 1934, Feb. 5, 1934, April 25, 1934, June 14, 1934, and Dec. 17, 1934. [Classes 75 (ii) and 75 (iv)] In a vehicle or like lamp comprising a light source at the focus of an approximately half ellipsoidal reflector the open end of which is fitted with a lens system, the latter comprises two or more dispersing lenses of different dispersing powers. Fig. 1 shows a one-piece lens system 5 comprising a central plano-concave part of weak dispersing power so as to produce a concentrated long distance beam, and an outer plano-concave part which converges the rays across the axis of the ellipsoidal reflector 1 and produces a dispersed marginal beam. Fig. 2 shows a one-piece lens system 6 comprising a central concavo-concave part surrounded by a series of concentric strips 7 of different radii of curvature so that the dispersion of the beam increases from the centre outwardly. Fig. 4 shows a weak dispersing lens 8 surrounded by a more strongly dispersing lens 9. Figs. 6 and 7 show a one-piece lens system formed on its inner concave surface with zones 141, 14<11>, 14<111> of different curvature, and on its outer convex surface with vertical cylindrical surfaces 15, 16, the upper cylindrical surfaces 15 being of smaller radius than the lower cylindrical surfaces 16 so that the upper portion of the beam is dispersed more than the lower portion. The cylindrical surfaces 15 may be coloured yellow, whilst the light source may comprise superposed filaments provided with means for screening the lower filament. The Specification as open to inspection under Sect. 91 comprises also the use of: (i) one or more condensing lenses, (ii) the lens 8 without the lens 9, and (iii) a reflector comprising a central paraboloidal part surrounded by an ellipsoidal part, with or without a lens system. This subject-matter does not appear in the Specification as accepted.
GB2405/35A 1934-02-05 1935-01-24 Improvements in lamps with lenses and reflectors Expired GB437001A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE437001X 1934-02-05

Publications (1)

Publication Number Publication Date
GB437001A true GB437001A (en) 1935-10-22

Family

ID=6506975

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2405/35A Expired GB437001A (en) 1934-02-05 1935-01-24 Improvements in lamps with lenses and reflectors

Country Status (1)

Country Link
GB (1) GB437001A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0365193A2 (en) 1988-10-15 1990-04-25 Carello Lighting Plc Motor vehicle headlamp
DE10221685A1 (en) * 2002-05-16 2003-12-04 Hella Kg Hueck & Co Motor vehicle fog tail light, has circular annular prism sections as optically effective elements sections arranged concentrically and adjacent to each other, divided into segments
CN103438402A (en) * 2013-08-30 2013-12-11 长城汽车股份有限公司 Lens for vehicle signal lamp and vehicle signal lamp

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0365193A2 (en) 1988-10-15 1990-04-25 Carello Lighting Plc Motor vehicle headlamp
EP0365193A3 (en) * 1988-10-15 1990-08-22 Carello Lighting Plc Motor vehicle headlamp
DE10221685A1 (en) * 2002-05-16 2003-12-04 Hella Kg Hueck & Co Motor vehicle fog tail light, has circular annular prism sections as optically effective elements sections arranged concentrically and adjacent to each other, divided into segments
DE10221685B4 (en) * 2002-05-16 2009-01-08 Hella Kgaa Hueck & Co. Motor vehicle light, in particular rear fog lamp
CN103438402A (en) * 2013-08-30 2013-12-11 长城汽车股份有限公司 Lens for vehicle signal lamp and vehicle signal lamp
CN103438402B (en) * 2013-08-30 2016-05-04 长城汽车股份有限公司 Lens and signals of vehicles light fixture for signalling light for vehicle

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