Light-source lamp unit, light-source device and projection-type display apparatus

• US 20040080715A1
• Filed: 10/14/2003
• Published: 04/29/2004
• Est. Priority Date: 04/10/1996
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Yajima, Akitaka, Haba, Shinji, Ushiyama, Tomiyoshi, Shinohara, Kazuto, Miyashita, Kiyoshi
• Granted Patent: US 7,006,004 B2
• Time in Patent Office: Days
• US Class Current: 353/30
• CPC Class Codes: G03B 21/2053 Intensity control of illuminating light controlled by video signal processing H04N5/74 or H04N9/31
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: H04N 9/3141 Constructional details thereof details not peculiar to the presence of an electronic spatial light modulator G03B21/14
• CPC Class Codes: H04N 9/315 Modulator illumination systems general applications of lighting devices F21V; general optical systems G02B; lamp houses for projectors not peculiar to the presence of an electronic spatial light modulator G03B21/20
• CPC Class Codes: H04N 9/3155 for controlling the light source light source control per se H05B35/00 – H05B47/00; control of an illumination source for displays in general G09G3/3406
• CPC Class Codes: H05B 41/36 Controlling
• CPC Class Codes: H05B 47/25 Circuit arrangements for protecting against overcurrent

Abstract

A projector includes a first lens plate having a plurality of lenses, a second lens plate having a plurality of lenses, a light valve that modulates an output light beam from the second lens plate, and a light source apparatus. The light-source apparatus has a light-source lamp including an emission tube, a reflective mirror that reflects a divergent light beam from the light-source lamp to output a parallel light beam, the reflecting mirror having a reflective surface, a lamp housing that supports the reflective mirror, and an electrode lead. The electrode lead is led out of an end of the emission tube that is projected forward out of the reflective surface and is connected to an external connection terminal board which is positioned to a rear side of the reflective surface. The electrode lead is routed via the portion of the reflective mirror other than an effective area of the reflective mirror. A portion of the electrode lead positioned on the side of the reflective surface is arranged along a grove of a lens of the plurality of lenses of one of the first and second lens plate.

Claims

1. A projector, comprising:

a first lens plate having a plurality of lenses;

a second lens plate having a plurality of lenses;

a light valve that modulates an output light beam from the second lens plate; and

a light source apparatus having;

a light-source lamp including an emission tube;

a reflective mirror that reflects a divergent light beam from the light-source lamp to output a parallel light beam, the reflecting mirror having a reflective surface;

a lamp housing that supports the reflective mirror; and

an electrode lead that is led out of an end of the emission tube that is projected forward out of the reflective surface and is connected to an external connection terminal board which is positioned to a rear side of the reflective surface, the electrode lead is routed via the portion of the reflective mirror other than an effective area of the reflective mirror, and a portion of the electrode lead positioned on the side of the reflective surface is arranged along a groove of a lens of the plurality of lenses of one of the first and second lens plate.

2. The projector of claim 1, wherein the terminal board is supported at a position other than the reflective surface.