Projection apparatus panel assembly

• US 6,962,418 B2
• Filed: 03/21/2005
• Issued: 11/08/2005
• Est. Priority Date: 05/14/2001
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Yoneya, Dai, Utsumi, Kenichiro
• Primary Examiner(s): Mathews, Alan A.
• Assistant Examiner(s): SEVER, ANDREW T
• Application Number:
  US11/086,088
• Publication Number:
  US 20050162739A1
• Time in Patent Office: 232 Days
• Field of Search: 353/47, 353/50, 353/51, 353/72, 353/74, 353 77- 80, 353/119, 353/122, 353/37, 353/75, 353/76, 348/787, 348/789, 348/794, 348/836, 348840-842, 348/823, 359/456, 359/457, 359/460, 248/917, 248/918
• US Class Current: 353/74
• CPC Class Codes: G03B 21/56 Projection screens
• CPC Class Codes: Y10S 248/917 Video display screen support

Abstract

A projector 10 projects an image onto a set of screens 14 for image formation. The set of screens 14 includes a first screen 50 and second screens 54 and 56. The projector includes a housing 20, a first screen fixture 74 and a second screen fixture 76. The housing 20 has an opening 30 for fitting the first screen 50 therein. The first screen fixture 74 positions the first screen 50 in the housing opening 30 and fixes an inner surface of the first screen 50 adhesively to the housing 20. The second screen fixture 76 is positioned between the first screen 50 and the first screen fixture 74, and fixes the second screens 54 and 56 between itself and the inside of the first screen 50.

Claims

1. A projector for projecting an image onto a set of screens for image formation, the set of screens including a first screen and a second screen, the projector comprising:

a housing having an opening for fitting the first screen therein;

a first screen fixture for positioning the first screen in the housing opening and fixing an inner surface of the first screen adhesively to the housing, said adhesive connection between said first screen and said housing being the sole means for fixing said screen to the housing, the first screen fixture comprises a fitting structure and a fitting member, the fitting structure protruding from inside of the housing, the fitting member including a first part and a second part the first part fixed in engagement with the fitting structure, the second part fixed adhesively to the inner surface of the first screen; and

a second screen fixture positioned behind the first screen and the first screen fixture and having a portion thereof held within an opening in said first screen fixture for fixing the second screen between the second screen fixture and the inside of the first screen, the second screen fixture comprises a first pinch part and a second pinch part, the first pinch part connected to the fitting structure, the second pinch part provided on the side of the fitting member that is opposite to the first screen;

wherein said first screen is larger than said second screen.

2. A projector according to claim 1, wherein the first screen is a contrast screen for protecting the second screen and for improved contrast in external light.

3. A projector according to claim 2, wherein the second screen comprises:

a fresnel screen for converting projected divergent beams into parallel beams and

a lenticular screen for diverging the parallel beams in the right and left directions.