JPS5489755A - Light valve type projector - Google Patents
Light valve type projectorInfo
- Publication number
- JPS5489755A JPS5489755A JP15763577A JP15763577A JPS5489755A JP S5489755 A JPS5489755 A JP S5489755A JP 15763577 A JP15763577 A JP 15763577A JP 15763577 A JP15763577 A JP 15763577A JP S5489755 A JPS5489755 A JP S5489755A
- Authority
- JP
- Japan
- Prior art keywords
- light
- schlieren
- light valve
- colors
- mask
- 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
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
PURPOSE: To project images superposed with a plurality of signals including color display with a single light valve by forming plural diffraction gratings of different pitches in adjacent array to a light diffracting medium and separating the light diffracting at different angles with a color schlieren mask.
CONSTITUTION: Light emitted from a projecting light source 19 is focused at a pinhole slit 21 by a condenser lens 20 and is radiated to a light valve target 23 by a schlieren lens 22. On the other hand, diffraction gratings are formed on the target 23 by an electron gun 24. The incident light having been subjected to diffraction is projected onto a screen 26 through a projection lens 24 and schlieren mask 25. In this way, the image signals of 3 colors may be written in the single light valve by a current modulating system by using the single electron gun without requiring any intricate circuits, thus the image displaying of colors may be performed with the single schlieren optical system.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15763577A JPS5489755A (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 |
---|---|---|---|
JP15763577A JPS5489755A (en) | 1977-12-27 | 1977-12-27 | Light valve type projector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5489755A true JPS5489755A (en) | 1979-07-17 |
Family
ID=15654019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15763577A Pending JPS5489755A (en) | 1977-12-27 | 1977-12-27 | Light valve type projector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5489755A (en) |
-
1977
- 1977-12-27 JP JP15763577A patent/JPS5489755A/en active Pending
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