Presentation | 1994/6/23 Optical System of CRT projection Display with ultra-short projection distance Takahiko Yoshida, Hiroki Yoshikawa, Shigeru Mori, Atsuo Ohsawa, Yutaka Matsuda, Kazunari Nakagawa, |
---|---|
PDF Download Page | PDF download Page Link |
Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | Optical system for the ultra-compact CRT projection display with slim set-depth and wide viewing angle has been developed.For reduction of set-depth,a projection lens system consisting of 4 plastic lenses and 1 glass lens is renewed to shorten the projection distance by 20 % (in comparison with our ′92 model). Fu rthermore, a new aspherical-shaped lenticular-lens and surface diffuser are introduced into the screen to widen the viewing angle near to that of direct-view type TVs. Consequently,39.5cm set-depth and viewing angle approximately 1. 5 times as wide as that of conventional model have been achieved in 39″(aspect ratio;16:9)rear projection TV. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | projection display / projection lens system / short projection distance / screen / wide viewing angle |
Paper # | EID94-11 |
Date of Issue |
Conference Information | |
Committee | EID |
---|---|
Conference Date | 1994/6/23(1days) |
Place (in Japanese) | (See Japanese page) |
Place (in English) | |
Topics (in Japanese) | (See Japanese page) |
Topics (in English) | |
Chair | |
Vice Chair | |
Secretary | |
Assistant |
Paper Information | |
Registration To | Electronic Information Displays (EID) |
---|---|
Language | JPN |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | Optical System of CRT projection Display with ultra-short projection distance |
Sub Title (in English) | |
Keyword(1) | projection display |
Keyword(2) | projection lens system |
Keyword(3) | short projection distance |
Keyword(4) | screen |
Keyword(5) | wide viewing angle |
1st Author's Name | Takahiko Yoshida |
1st Author's Affiliation | Image & Media System Laboratory,Hitachi,Ltd.() |
2nd Author's Name | Hiroki Yoshikawa |
2nd Author's Affiliation | Image & Media System Laboratory,Hitachi,Ltd. |
3rd Author's Name | Shigeru Mori |
3rd Author's Affiliation | Image & Media System Laboratory,Hitachi,Ltd. |
4th Author's Name | Atsuo Ohsawa |
4th Author's Affiliation | Image & Media System Laboratory,Hitachi,Ltd. |
5th Author's Name | Yutaka Matsuda |
5th Author's Affiliation | Image & Media System Laboratory,Hitachi,Ltd. |
6th Author's Name | Kazunari Nakagawa |
6th Author's Affiliation | Hitachi Video & Information System,Inc. |
Date | 1994/6/23 |
Paper # | EID94-11 |
Volume (vol) | vol.94 |
Number (no) | 122 |
Page | pp.pp.- |
#Pages | 6 |
Date of Issue |