JPS5638006A - Television display unit of back projection type - Google Patents
Television display unit of back projection typeInfo
- Publication number
- JPS5638006A JPS5638006A JP11443779A JP11443779A JPS5638006A JP S5638006 A JPS5638006 A JP S5638006A JP 11443779 A JP11443779 A JP 11443779A JP 11443779 A JP11443779 A JP 11443779A JP S5638006 A JPS5638006 A JP S5638006A
- Authority
- JP
- Japan
- Prior art keywords
- display unit
- submirror
- under
- mirror
- cathode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Projection Apparatus (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
PURPOSE: To obtain the apparatus low in the height, by locating one cathode-ray tube under the main dichroic mirror, two tubes at the side of it, and horizontally the tube axis of tube under it.
CONSTITUTION: The projective lens 5G is provided under the main dichroic mirror 7, and the submirror 9 is located further under it. The cathode ray tube 1G is provided in the side optical path in which the incident angle to the submirror 9 is 45°, and the direction of tube axis is made horizontal. In the side optical path of the main dichroic mirror 7 orthogonal to the reflection light of the submirror 9, the projective lens 5RB and the subdichroic mirror 6 are provided, and this subdichroic mirror 6 is located at the position dividing the open angle into two, to the cathode- ray tubes 1R, 1B which are located horizontally and the mutual surface has the open angle of 90°. Thus, the shape of the display unit is made small and especially the height can be lowered.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11443779A JPS5638006A (en) | 1979-09-06 | 1979-09-06 | Television display unit of back projection type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11443779A JPS5638006A (en) | 1979-09-06 | 1979-09-06 | Television display unit of back projection type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5638006A true JPS5638006A (en) | 1981-04-13 |
Family
ID=14637701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11443779A Pending JPS5638006A (en) | 1979-09-06 | 1979-09-06 | Television display unit of back projection type |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5638006A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6315220A (en) * | 1986-07-08 | 1988-01-22 | Seikosha Co Ltd | Projection type liquid crystal display device |
| JPH03123313A (en) * | 1989-10-06 | 1991-05-27 | Sony Tektronix Corp | Optical attenuator |
| JPH04322212A (en) * | 1990-12-20 | 1992-11-12 | Hughes Aircraft Co | Optical multiplexer |
| US7015260B2 (en) | 2003-06-04 | 2006-03-21 | E.I. Du Pont De Nemours And Company | High temperature polymeric materials containing corona resistant composite filler, and methods relating thereto |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53101933A (en) * | 1977-02-17 | 1978-09-05 | Matsushita Electric Ind Co Ltd | Picture-projector |
-
1979
- 1979-09-06 JP JP11443779A patent/JPS5638006A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53101933A (en) * | 1977-02-17 | 1978-09-05 | Matsushita Electric Ind Co Ltd | Picture-projector |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6315220A (en) * | 1986-07-08 | 1988-01-22 | Seikosha Co Ltd | Projection type liquid crystal display device |
| JPH03123313A (en) * | 1989-10-06 | 1991-05-27 | Sony Tektronix Corp | Optical attenuator |
| JP2614117B2 (en) * | 1989-10-06 | 1997-05-28 | ソニー・テクトロニクス 株式会社 | Optical attenuator |
| JPH04322212A (en) * | 1990-12-20 | 1992-11-12 | Hughes Aircraft Co | Optical multiplexer |
| US7015260B2 (en) | 2003-06-04 | 2006-03-21 | E.I. Du Pont De Nemours And Company | High temperature polymeric materials containing corona resistant composite filler, and methods relating thereto |
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