JPS5735486A - Video projector - Google Patents
Video projectorInfo
- Publication number
- JPS5735486A JPS5735486A JP11076680A JP11076680A JPS5735486A JP S5735486 A JPS5735486 A JP S5735486A JP 11076680 A JP11076680 A JP 11076680A JP 11076680 A JP11076680 A JP 11076680A JP S5735486 A JPS5735486 A JP S5735486A
- Authority
- JP
- Japan
- Prior art keywords
- screen
- video
- convex
- cathode ray
- high luminance
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Stereoscopic And Panoramic Photography (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
PURPOSE:To obtain a bright projective image and to reduce color slipping, by projecting an extended light of optical image of high luminance cathode ray tube where approximately square screen is formed by compressing the horizontal amplitude, on a screen via a pillar shape convex mirror. CONSTITUTION:A video projector consists of a high luminance cathode ray tube 10 as an optical image source, extended projective lens system 20, convex reflection mirror 30 and transparent screen 40. The tube 10 is provided with a square screen 11, which is used in combination with a horizontal deflection circuit 12 suppressing the horizontal deflection amplitude, and a video signal applied from a video output circuit 13 is compressed horizontally on the screen 11 to picture the video. The convex reflection mirror 30 consists of a convex pillar in which the curvature is selected so that the compressed picture is enlarged and recovered on the screen 40.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11076680A JPS5735486A (en) | 1980-08-12 | 1980-08-12 | Video projector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11076680A JPS5735486A (en) | 1980-08-12 | 1980-08-12 | Video projector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5735486A true JPS5735486A (en) | 1982-02-26 |
Family
ID=14544027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11076680A Pending JPS5735486A (en) | 1980-08-12 | 1980-08-12 | Video projector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5735486A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61269134A (en) * | 1985-05-24 | 1986-11-28 | Hitachi Ltd | Liquid crystal projection type display device |
JPH02170790A (en) * | 1988-12-23 | 1990-07-02 | Victor Co Of Japan Ltd | Image information magnetic recording/reproducing device and image information magnetic recording medium |
JPH02312372A (en) * | 1989-05-26 | 1990-12-27 | Sharp Corp | Liquid crystal projector |
-
1980
- 1980-08-12 JP JP11076680A patent/JPS5735486A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61269134A (en) * | 1985-05-24 | 1986-11-28 | Hitachi Ltd | Liquid crystal projection type display device |
JPH02170790A (en) * | 1988-12-23 | 1990-07-02 | Victor Co Of Japan Ltd | Image information magnetic recording/reproducing device and image information magnetic recording medium |
JPH02312372A (en) * | 1989-05-26 | 1990-12-27 | Sharp Corp | Liquid crystal projector |
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