Title:
投影装置用光源及びそれを用いた投写型画像ディスプレイ装置
Document Type and Number:
Japanese Patent JP4096598
Kind Code:
B2
Abstract:
Provided is a projector light source which can effectively project a light beam having a sufficient volume from a lamp as a light source, and which is highly accurate and is excellent in workability. The projector light source comprising an arc tube for emitting a light beam; and a concave reflector including a hold part for holding the arc tube, and having a concave reflection surface for reflecting the light beam from the arc tube so that the light beam outgoes through an opening of the reflector, the concave reflector comprising a first reflector located in the vicinity of the hold part for holding the light emitting tube, and second reflector located in a part other than the hold part, and made of a material different from that of the first reflector. Further, the first reflector is made of heat-resistant glass, and the second reflector is made a material containing a heat-resistant organic material having a thermal deformation temperature which is lower than that of the heat-resistant glass.
Inventors:
Nobuo Masuoka
Koji Hirata
Ryuji Kurihara
Koji Kodera
Koji Hirata
Ryuji Kurihara
Koji Kodera
Application Number:
JP2002099521A
Publication Date:
June 04, 2008
Filing Date:
April 02, 2002
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
F21S2/00; F21V7/00; G03B21/00; F21V7/10; F21V7/22; F21V29/02; F21V29/505; G03B21/14; F21V19/00; F21Y101/00
Domestic Patent References:
| JP58182360U | ||||
| JP2001290218A | ||||
| JP5182502A | ||||
| JP48014083U | ||||
| JP3203109A | ||||
| JP2002313119A | ||||
| JP2262205A |
Attorney, Agent or Firm:
Manabu Inoue