GB449575A - Improvements in or relating to illuminating projectors, more particularly those intended for motor cars - Google Patents

Improvements in or relating to illuminating projectors, more particularly those intended for motor cars

Info

Publication number
GB449575A
GB449575A GB9159/35A GB915935A GB449575A GB 449575 A GB449575 A GB 449575A GB 9159/35 A GB9159/35 A GB 9159/35A GB 915935 A GB915935 A GB 915935A GB 449575 A GB449575 A GB 449575A
Authority
GB
United Kingdom
Prior art keywords
reflector
reflectors
bulb
march
focus
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
GB9159/35A
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.)
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 GB449575A publication Critical patent/GB449575A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D13/00—Electric heating systems
    • F24D13/02—Electric heating systems solely using resistance heating, e.g. underfloor heating
    • 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
    • F21S41/47—Attachment thereof
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

449,575. Vehicle &c. lamps ; reflectors. SOC. POUR LA FABRICATION DES PROJECTEURS ELECTRIQUES MARCHAL, 14, Rue Mehul, Pantin, Seine, France. March 23, 1935, No. 9159. Convention date, March 23, 1934. [Classes 75 (ii) and 75 (iv)] In a motor vehicle or other light projector with a main reflector 3, two small auxiliary reflectors 1, 2 are placed in front of the electric lamp bulb 4, the surfaces of the reflectors 1, 2 being such that direct rays reflected by the first reflector 1 on to the second reflector 2 are reflected by the latter forwardly substantially horizontally. As shown, the reflector 1 is ellipsoidal with one focus f at the light source and the other focus f coincident with that of the reflector 2, which is parabolic. Alternatively, the first reflector may be formed by the rotation of a circular arc about an axis not passing through the centre of the circle, or by the rotation of part of a parabola about a line perpendicular to its principal axis. In the last case, the second reflector is formed as a cone with an apex of 90‹. The greatest diameter of the reflectors 1, 2 is less than that of the bulb 4. The filament of the bulb is a horizontal, transverse helix.
GB9159/35A 1934-03-23 1935-03-23 Improvements in or relating to illuminating projectors, more particularly those intended for motor cars Expired GB449575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR449575X 1934-03-23

Publications (1)

Publication Number Publication Date
GB449575A true GB449575A (en) 1936-06-30

Family

ID=8900755

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9159/35A Expired GB449575A (en) 1934-03-23 1935-03-23 Improvements in or relating to illuminating projectors, more particularly those intended for motor cars

Country Status (1)

Country Link
GB (1) GB449575A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4564783A (en) * 1982-07-09 1986-01-14 Patent-Treuhand Gesellschaft Fur Elektrische Gluhlampen Gmbh Halogen incandescent lamp-and-reflector unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4564783A (en) * 1982-07-09 1986-01-14 Patent-Treuhand Gesellschaft Fur Elektrische Gluhlampen Gmbh Halogen incandescent lamp-and-reflector unit

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