IP Library Granted Patent US 7,098,972
Granted Patent B2
US 7,098,972 · App. 10/790,859 · Granted Aug 29, 2006

Liquid crystal projector with different shaped housing for each liquid crystal panel dependent on color

Assignee: Seiko Epson Corporation
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Quick Facts
Patent No.
US 7,098,972
App. No.
10/790,859
Granted
Aug 29, 2006
Kind
B2
Abstract

The invention provides a cased electro-optical apparatus that can include an electro-optical unit that receives light in the image display area from a light source, a plate that opposes one side of the electro-optical unit, and a cover for covering the electro-optical unit. The cased electro-optical apparatus can have a case for containing the electro-optical unit by supporting at least a portion of the periphery of the image display area of the electro-optical unit by the plate and/or the cover. One of the plate and the cover is selected from a plurality of ones having different shapes and each of the plurality of ones is attachable to the other.

Claims (25)

1. A projection display apparatus, comprising:

a light source;

a plurality of electro-optical units that receive light from the light source;

an optical system that guides the light to the electro-optical units;

a projection optical system that projects light emitted from the electro-optical units;

a first case that contains at least one of the electro-optical units; and

a second case having a different shape compared to the first case that contains at least one of the electro-optical units not contained in the first case, the different shape depending on a type of incident light or a position of the second case relative to at least one of the optical system or the projection optical system.

2. The projection display apparatus according to claim 1 ,

the first case and the second case each including a plate opposing one side of the electro-optical unit and a cover attachable to the plate that covers the electro-optical unit;

the first case and the second case having different shapes.

3. The projection display apparatus according to claim 2 , including the first case having a first cover with a larger surface area and the second case having a second cover with a smaller surface area.

4. The projection display apparatus according to claim 2 , including, the cover with a surface area increasing portion for increasing the surface area;

the first case having a third cover with a surface area increased by the surface area increasing area;

the second case having a fourth cover with a surface area increased to a lesser degree compared to a third cover by the surface area increasing area.

5. The projection display apparatus according to claim 1 ,

the first case including a fifth cover with a surface area increasing portion for increasing the surface area;

the second case including a sixth cover without a surface area increasing portion.

6. The projection display apparatus according to claim 1 , including a plurality of electro-optical units corresponding to independent light components separated from light emitted from a light source;

the first case corresponding to at least one light component;

the second case corresponding to the remaining light components.

7. The projection display apparatus according to claim 6 ,

the independent light components being red, green, and blue;

the first case corresponding to blue;

the second case corresponding to red and green;

the surface area of the first case being larger than the surface area of the second case.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 16, 2018
From: SEIKO EPSON CORPORATION
To: 138 EAST LCD ADVANCEMENTS LIMITED
Reel/Frame 046551/0423 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 24, 2004
From: SAITOH, HIROMI; MIYASHITA, TOMOAKI; KOJIMA, HIROYUKI
To: SEIKO EPSON CORPORATION
Reel/Frame 014775/0855 →
Priority Claims (2)
JP 2003-088813 · Mar 27, 2003 · national
JP 2003-384073 · Nov 13, 2003 · national
Continuity (1)
Related Publication 20040212747A1 · Oct 28, 2004