Projection television

• US 7,914,160 B2
• Filed: 07/24/2007
• Issued: 03/29/2011
• Est. Priority Date: 02/02/2007
• Status: Active Grant

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Sugano, Norichika
• Primary Examiner(s): Shafer; Ricky D
• Application Number:
  US11/878,408
• Publication Number:
  US 20080186606A1
• Time in Patent Office: 1,344 Days
• Field of Search: 359/871, 348/782, 348/832, 353/77, 353/98
• US Class Current: 359/871
• CPC Class Codes: G02B 7/182 for mirrors
• CPC Class Codes: G03B 21/10 Projectors with built-in or built-on screen
• CPC Class Codes: G03B 21/145 Housing details, e.g. position adjustments thereof
• CPC Class Codes: G03B 21/28 Reflectors in projection beam in illumination beam G03B21/2066
• CPC Class Codes: H04N 9/3141 Constructional details thereof details not peculiar to the presence of an electronic spatial light modulator G03B21/14

Abstract

A projection television includes: a mirror holder made up of a metal bracket fixed with its one end attached to a cabinet and a mirror holder cover made of synthetic resin having a square-cornered U shape part into which the other end of the bracket is fitted; and a mirror having an edge supported by the mirror holder and changing the optical path of projected light.

Claims

1. A projection television comprising:

a mirror holder including a bracket made of metal fixed with its one end attached to a cabinet and a mirror holder cover made of synthetic resin having a first U shape part into which the other end of said bracket is fitted; and

a mirror having an edge supported by said mirror holder and changing an optical path of projected light, wherein the mirror holder cover is positioned at a side of a reflection plane of the projected light of the mirror and inclined toward an image display device; and

wherein a surface of said mirror holder cover is made of synthetic resin, selected from said plurality of synthetic resins, which has lower reflectance than other parts of said mirror holder.

2. The projection television according to claim 1, wherein

said mirror holder is provided with a projection at a contact portion between said bracket and said mirror holder cover.

3. The projection television according to claim 1, wherein

said mirror holder is provided with an adhesive member at a contact portion between said bracket and said mirror holder cover.

4. The projection television according to claim 1, wherein

said mirror holder cover has a second U shape part on one end extending from said first U shape part, and

said mirror holder supports said mirror with the edge of said mirror fitted into said second U shape part.

5. The projection television according to claim 4, wherein

said mirror holder cover provides a space on an inner wall of said second U shape part that is in contact with said edge of said mirror.

6. The projection television according to claim 4, wherein

said mirror holder cover has a projection on its inner wall.

7. The projection television according to claim 6, wherein

said inner wall provided with said projection is the inner wall of said second U shape part.

8. The projection television according to claim 1, wherein

said bracket includes a plurality of brackets.