Title:
【発明の名称】自動車用ヘッドランプ
Document Type and Number:
Japanese Patent JPH02501784
Kind Code:
A
Abstract:
PCT No. PCT/SE88/00534 Sec. 371 Date Jun. 16, 1989 Sec. 102(e) Date Jun. 16, 1989 PCT Filed Oct. 13, 1988 PCT Pub. No. WO89/03778 PCT Pub. Date May 5, 1989.A vehicle headlamp comprises a reflector and a headlamp glass constructed to produce a so-called full beam lobe when a light source is located in a predetermined position in relation to the reflector. The invention is characterized in that the light source (11) is constructed to transmit both a large proportion of visible light and a large proportion of ultraviolet light, and in that a filter (19; 22; 23) is located in the beam path of the headlamp and is effective in filtering that part of the light emitted by the light source (11) which gives rise to a light lobe corresponding to the difference between a so-called full beam lobe and a so-called dipped beam lobe. The headlamp is further characterized in that the filter (19; 22; 23) is constructed firstly to filter light so that substantially no light within the visible light spectrum will be transmitted through the filter, and secondly to transmit ultraviolet light.
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Inventors:
Berg Kvist, Rals A.
Application Number:
JP50865188A
Publication Date:
June 14, 1990
Filing Date:
October 13, 1988
Export Citation:
Assignee:
Ultra Lux Activolag
International Classes:
B60Q1/04; B60Q1/18; F21S8/10; F21V9/06; F21V9/14; F21V11/00; F21V5/00; (IPC1-7): F21M3/14; F21M3/26
Attorney, Agent or Firm:
Akira Asamura (3 outside)