| 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, |
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| 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 |
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| 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) |
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| 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 | |