JPS5489753A - Light valve type projector - Google Patents
Light valve type projectorInfo
- Publication number
- JPS5489753A JPS5489753A JP15763277A JP15763277A JPS5489753A JP S5489753 A JPS5489753 A JP S5489753A JP 15763277 A JP15763277 A JP 15763277A JP 15763277 A JP15763277 A JP 15763277A JP S5489753 A JPS5489753 A JP S5489753A
- Authority
- JP
- Japan
- Prior art keywords
- light valve
- light
- lens
- images
- projecting
- 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.)
- Granted
Links
Landscapes
- Transforming Electric Information Into Light Information (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
PURPOSE: To obtain projection images of good picture quality relatively easily and make possile obtaining plural image displays and color displays with a single light valve by using the two dimensional images having grating form structure as a write light source image.
CONSTITUTION: Screen bars 13 are installed on the surface of the image display screen of a CRT 12 and images are reduced and formed on the photoconductive face of a light valve 15 by using a write lens 14. When a voltage is applied to the light valve 15 by using a power source 16, the gratings of pitch are formed. On the other hand, the light from a projecting light source 1 goes through a condenser lens 18 and reflecting mirror 18 and is projected onto the light valve 15 through a projecting lens 20. The reflected light having been diffracted by the light valve 15 passes through a projecting lens 20 and is projected onto the screen 21. Thereby, the projector of good picture quality may be constituted relatively easily and color displaying may be performed with the simple optical system.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15763277A JPS5489753A (en) | 1977-12-27 | 1977-12-27 | Light valve type projector |
US06/237,471 US4389096A (en) | 1977-12-27 | 1981-02-23 | Image display apparatus of liquid crystal valve projection type |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15763277A JPS5489753A (en) | 1977-12-27 | 1977-12-27 | Light valve type projector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5489753A true JPS5489753A (en) | 1979-07-17 |
JPS6133169B2 JPS6133169B2 (en) | 1986-07-31 |
Family
ID=15653955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15763277A Granted JPS5489753A (en) | 1977-12-27 | 1977-12-27 | Light valve type projector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5489753A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0427913A (en) * | 1990-05-23 | 1992-01-30 | Victor Co Of Japan Ltd | Display device |
EP0530378B1 (en) * | 1991-03-20 | 1999-01-07 | Mitsubishi Denki Kabushiki Kaisha | Projection type display device |
-
1977
- 1977-12-27 JP JP15763277A patent/JPS5489753A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0427913A (en) * | 1990-05-23 | 1992-01-30 | Victor Co Of Japan Ltd | Display device |
EP0530378B1 (en) * | 1991-03-20 | 1999-01-07 | Mitsubishi Denki Kabushiki Kaisha | Projection type display device |
Also Published As
Publication number | Publication date |
---|---|
JPS6133169B2 (en) | 1986-07-31 |
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