JPS5489755A - Light valve type projector - Google Patents

Light valve type projector

Info

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
Application number
JP15763577A
Other languages
Japanese (ja)
Inventor
Yoshikazu Hori
Masaaki Asai
Shoichi Fukai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP15763577A priority Critical patent/JPS5489755A/en
Publication of JPS5489755A publication Critical patent/JPS5489755A/en
Priority to US06/237,471 priority patent/US4389096A/en
Pending legal-status Critical Current

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
JP15763577A 1977-12-27 1977-12-27 Light valve type projector Pending JPS5489755A (en)

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)

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