JPS54111846A - Light valve type projector - Google Patents

Light valve type projector

Info

Publication number
JPS54111846A
JPS54111846A JP1943078A JP1943078A JPS54111846A JP S54111846 A JPS54111846 A JP S54111846A JP 1943078 A JP1943078 A JP 1943078A JP 1943078 A JP1943078 A JP 1943078A JP S54111846 A JPS54111846 A JP S54111846A
Authority
JP
Japan
Prior art keywords
light
valve
schlieren
light valve
lens
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
JP1943078A
Other languages
Japanese (ja)
Other versions
JPH0115848B2 (en
Inventor
Yoshikazu Hori
Shoichi Fukai
Masaaki Asai
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 JP1943078A priority Critical patent/JPS54111846A/en
Publication of JPS54111846A publication Critical patent/JPS54111846A/en
Priority to US06/237,471 priority patent/US4389096A/en
Publication of JPH0115848B2 publication Critical patent/JPH0115848B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Abstract

PURPOSE: To write plural image signals in a single light valve and project the plural images with one set of schlieren optical system by applying the diffraction phenomena of light owing to periodic refractive index fluctuations formed in the liquid crystal layer of the light valve.
CONSTITUTION: The light emitted from the fluorescent substance surface of 3 colors of a color braun tube 26 is applied as write light via glass fibers 27 to the light valve 40 connected with a voltage source 51. According to the intensities of said light, the resistance of the photoconductive layer of the valve 40 changes, causing three kinds of gratings to be formed in the liquid crystal layer. On the other hand, the light of a projection light source 44 is condensed to a pinhole mask 46 by a condenser lens 45 and is radiated to the valve 40 through a schlieren lens 47. The reflected light thereof is projected on a screen 50 through a projection lens 48 and schlieren mask 49, whereby the color images are obtained on the screen 50.
COPYRIGHT: (C)1979,JPO&Japio
JP1943078A 1977-12-27 1978-02-21 Light valve type projector Granted JPS54111846A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1943078A JPS54111846A (en) 1978-02-21 1978-02-21 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
JP1943078A JPS54111846A (en) 1978-02-21 1978-02-21 Light valve type projector

Publications (2)

Publication Number Publication Date
JPS54111846A true JPS54111846A (en) 1979-09-01
JPH0115848B2 JPH0115848B2 (en) 1989-03-20

Family

ID=11999057

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1943078A Granted JPS54111846A (en) 1977-12-27 1978-02-21 Light valve type projector

Country Status (1)

Country Link
JP (1) JPS54111846A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63231479A (en) * 1987-03-20 1988-09-27 ソニー株式会社 Projection type display device
US5144463A (en) * 1990-03-08 1992-09-01 Pioneer Electronic Corporation Liquid crystal light valve using non-monochromatic writing light
US5260815A (en) * 1989-08-03 1993-11-09 Nippon Hoso Kyokai Light writing type projection display using polymer-dispersed liquid crystal and liquid crystal television set as image light source
US5689316A (en) * 1992-01-08 1997-11-18 Terumo Kabushiki Kaisha Depth sampling three-dimensional image display apparatus
US5839808A (en) * 1994-09-28 1998-11-24 Nikon Corporation Projection optical system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4862445A (en) * 1971-12-03 1973-08-31
JPS5033846A (en) * 1973-07-25 1975-04-01

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4862445A (en) * 1971-12-03 1973-08-31
JPS5033846A (en) * 1973-07-25 1975-04-01

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63231479A (en) * 1987-03-20 1988-09-27 ソニー株式会社 Projection type display device
US5260815A (en) * 1989-08-03 1993-11-09 Nippon Hoso Kyokai Light writing type projection display using polymer-dispersed liquid crystal and liquid crystal television set as image light source
US5144463A (en) * 1990-03-08 1992-09-01 Pioneer Electronic Corporation Liquid crystal light valve using non-monochromatic writing light
US5689316A (en) * 1992-01-08 1997-11-18 Terumo Kabushiki Kaisha Depth sampling three-dimensional image display apparatus
US5839808A (en) * 1994-09-28 1998-11-24 Nikon Corporation Projection optical system

Also Published As

Publication number Publication date
JPH0115848B2 (en) 1989-03-20

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