GB457595A - Improvements in or relating to head lamps for road vehicles and the like - Google Patents

Improvements in or relating to head lamps for road vehicles and the like

Info

Publication number
GB457595A
GB457595A GB1448336A GB1448336A GB457595A GB 457595 A GB457595 A GB 457595A GB 1448336 A GB1448336 A GB 1448336A GB 1448336 A GB1448336 A GB 1448336A GB 457595 A GB457595 A GB 457595A
Authority
GB
United Kingdom
Prior art keywords
relating
road vehicles
head lamps
reflector
dull
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
GB1448336A
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.)
JOHN HOGG THOMSON
Original Assignee
JOHN HOGG THOMSON
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 JOHN HOGG THOMSON filed Critical JOHN HOGG THOMSON
Priority to GB1448336A priority Critical patent/GB457595A/en
Publication of GB457595A publication Critical patent/GB457595A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/08—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of 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
    • F21S41/20—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
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/331—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas
    • F21S41/333—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas with discontinuity at the junction between adjacent areas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Landscapes

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

Abstract

457,595. Vehicle &c. lamps. THOMSON, J. H., 2, Roseburn Street, Edinburgh. March 6, 1936, No. 14483. [Class 75 (iv)] A non-dazzling road vehicle or like lamp comprises an electric light bulb B made of white opal or other glass housed in a rear dull reflector A, and a plano-convex or other concentrating lens D fitted into a front dull reflector C. The reflectors A, C are fitted together as at G so as to form a continuous reflecting surface.
GB1448336A 1936-03-06 1936-03-06 Improvements in or relating to head lamps for road vehicles and the like Expired GB457595A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1448336A GB457595A (en) 1936-03-06 1936-03-06 Improvements in or relating to head lamps for road vehicles and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1448336A GB457595A (en) 1936-03-06 1936-03-06 Improvements in or relating to head lamps for road vehicles and the like

Publications (1)

Publication Number Publication Date
GB457595A true GB457595A (en) 1936-12-01

Family

ID=10042006

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1448336A Expired GB457595A (en) 1936-03-06 1936-03-06 Improvements in or relating to head lamps for road vehicles and the like

Country Status (1)

Country Link
GB (1) GB457595A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5077648A (en) * 1990-12-26 1991-12-31 Rosz Cass A Minimal glare headlamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5077648A (en) * 1990-12-26 1991-12-31 Rosz Cass A Minimal glare headlamp

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