GB404223A - Improvements in or relating to the obtaining of a horizontal divergence of luminous rays emitted by light-projectors - Google Patents

Improvements in or relating to the obtaining of a horizontal divergence of luminous rays emitted by light-projectors

Info

Publication number
GB404223A
GB404223A GB19989/33A GB1998933A GB404223A GB 404223 A GB404223 A GB 404223A GB 19989/33 A GB19989/33 A GB 19989/33A GB 1998933 A GB1998933 A GB 1998933A GB 404223 A GB404223 A GB 404223A
Authority
GB
United Kingdom
Prior art keywords
light
obtaining
bulb
corrugations
projectors
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
GB19989/33A
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.)
MACHAL PROJECTEURS
Original Assignee
MACHAL PROJECTEURS
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 MACHAL PROJECTEURS filed Critical MACHAL PROJECTEURS
Publication of GB404223A publication Critical patent/GB404223A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/26—Screens; Filters
    • 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
    • F21S41/40—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
    • F21S41/435—Hoods or cap-shaped
    • 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
    • F21V5/00—Refractors for light sources
    • 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)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

404,223. Vehicle &c. lamps. SOC. POUR LA FABRICATION DES PROJECTEURS ELECTRIQUES MARCHAL, 14, Rue Mehul, Pantin, Seine, France. July 14, 1933, No. 19989. Convention date, July 18, 1932. [Class 39 (ii) and 75 (iv).] A vehicle or like lamp is provided between the source of light and the reflector with a screen which is permeable to light and is corrugated in such a manner that the rays of light finally reflected by the reflector diverge horizontally. The screen may be separate from or form part of an electric lamp bulb. The Specification contains an explanation of the curvatureof the corrugations and gives photographic method of obtaining them. The corrugations 7 (shown in elevation in Fig. 3 and in plan in Fig. 4) may extend over the upper and lower zones 9, 10 of the bulb, or they may extend over the upper zone only and the lower zone left smooth or otherwise corrugated. The front 6a of the bulb may be left smooth, provided with annular corrugations, or provided with a recuperating reflecting surface.
GB19989/33A 1932-07-18 1933-07-14 Improvements in or relating to the obtaining of a horizontal divergence of luminous rays emitted by light-projectors Expired GB404223A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR753360T 1932-07-18

Publications (1)

Publication Number Publication Date
GB404223A true GB404223A (en) 1934-01-11

Family

ID=9001174

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19989/33A Expired GB404223A (en) 1932-07-18 1933-07-14 Improvements in or relating to the obtaining of a horizontal divergence of luminous rays emitted by light-projectors

Country Status (4)

Country Link
DE (1) DE646126C (en)
FR (1) FR753360A (en)
GB (1) GB404223A (en)
SE (1) SE89523C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2418417A1 (en) * 1978-02-27 1979-09-21 Iao Industrie Riunite Spa MOTOR VEHICLE LAMP

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2418417A1 (en) * 1978-02-27 1979-09-21 Iao Industrie Riunite Spa MOTOR VEHICLE LAMP

Also Published As

Publication number Publication date
FR753360A (en) 1933-10-14
DE646126C (en) 1937-06-10
SE89523C1 (en) 1937-06-22

Similar Documents

Publication Publication Date Title
GB404223A (en) Improvements in or relating to the obtaining of a horizontal divergence of luminous rays emitted by light-projectors
GB416561A (en) Improvements in electric lamps with reflectors
GB516361A (en) Improvements in or relating to lighting fittings
GB302656A (en)
GB521268A (en) Improvements in or relating to headlamps for automobiles and similar vehicles
GB287088A (en) Improvements in or relating to vehicle lamps
GB532090A (en) Improvements in or relating to the head lamps of motor vehicles
GB441156A (en) Reflector for lamps, particularly for vehicle headlamps
GB178388A (en) Improvements in headlamps for automobiles
GB292167A (en)
GB301309A (en) Improvements in or relating to vehicle and like headlamps
GB393501A (en) Improvements in illuminating systems for vehicles
GB258215A (en) Improvements in vehicle headlights or other search lights
GB275980A (en) Headlight attachment
GB310547A (en) Improvements in or relating to vehicular and other lamps
GB170610A (en) Improvements in vehicular head lamps
GB492626A (en) Improvements in directional lighting fittings
GB324723A (en) Improvements in lamps for vehicles and the like
GB291754A (en) Improvements in automobile head lamps
GB454131A (en) Improvements in and relating to lamp reflectors
GB217539A (en) Improvements in illuminating appliances
GB491580A (en) Improvements in or relating to lamp fittings
GB381487A (en) Improvements in lamps
GB469750A (en) Reflector apparatus and method of making same
GB228189A (en) Improvements in and relating to headlamps