JPS5489753A - Light valve type projector - Google Patents

Light valve type projector

Info

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
Application number
JP15763277A
Other languages
Japanese (ja)
Other versions
JPS6133169B2 (en
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 JP15763277A priority Critical patent/JPS5489753A/en
Publication of JPS5489753A publication Critical patent/JPS5489753A/en
Priority to US06/237,471 priority patent/US4389096A/en
Publication of JPS6133169B2 publication Critical patent/JPS6133169B2/ja
Granted legal-status Critical Current

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
JP15763277A 1977-12-27 1977-12-27 Light valve type projector Granted JPS5489753A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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