Title:
LUMINOUS INTENSITY DISTRIBUTION CONTROL LIGHTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2005/033578
Kind Code:
A1
Abstract:
A luminous intensity distribution controller for discharge lamps having improved lamp efficiency while maintaining its specific lighting posture. There are provided a lighting source (1) in which electric discharge is caused between opposed electrodes (2, 4) to radiate light, a reflecting mirror (5) for reflecting a part of light radiated from the light source (1) to control the light beam angle, and travel path changing mirror (7) for changing the travel path of the light beam the divergence of which is controlled by the reflecting mirror (5). The light source (1) is so arranged that the axial line connecting the electrodes (2, 4) of the light source (1) or a reference line used for another posture specification is substantially aligned with the center line of the light beam controlled by the reflecting mirror (5). The path changing mirror (7) can change the direction in which the controlled light beam travels to a desired direction with respect to the center line of the controlled light beam.
Inventors:
OYAMA NOBUO (JP)
Application Number:
PCT/JP2004/013818
Publication Date:
April 14, 2005
Filing Date:
September 22, 2004
Export Citation:
Assignee:
STI JAPAN KK (JP)
OYAMA NOBUO (JP)
OYAMA NOBUO (JP)
International Classes:
G03B21/14; F21S2/00; F21S8/00; F21V5/04; F21V7/05; F21V7/08; F21V7/09; F21V14/00; F21V14/04; F21V17/02; F21V21/30; F21V29/00; F21Y101/00; (IPC1-7): F21S2/00
Foreign References:
| JPS57175309U | 1982-11-05 | |||
| JP2002093203A | 2002-03-29 | |||
| JPH05101702A | 1993-04-23 | |||
| JP2002216518A | 2002-08-02 | |||
| JP2002237204A | 2002-08-23 |
Other References:
See also references of EP 1677044A4
Attorney, Agent or Firm:
Ishikawa, Toshihiko (ShinyokohamaS.S Bldg 2-5-26, Shinyokohama, Kouhoku-ku, Yokohama-shi Kanagawa, JP)
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