JPS6444925A - Projection type color display device - Google Patents

Projection type color display device

Info

Publication number
JPS6444925A
JPS6444925A JP20091487A JP20091487A JPS6444925A JP S6444925 A JPS6444925 A JP S6444925A JP 20091487 A JP20091487 A JP 20091487A JP 20091487 A JP20091487 A JP 20091487A JP S6444925 A JPS6444925 A JP S6444925A
Authority
JP
Japan
Prior art keywords
lens
light
fresnel lens
ready
equal
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
JP20091487A
Other languages
Japanese (ja)
Other versions
JP2588541B2 (en
Inventor
Yasuo Yamagishi
Masayuki Iwasaki
Toshiaki Yoshihara
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP62200914A priority Critical patent/JP2588541B2/en
Publication of JPS6444925A publication Critical patent/JPS6444925A/en
Application granted granted Critical
Publication of JP2588541B2 publication Critical patent/JP2588541B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

PURPOSE:To use a ready-made overhead projector by respectively arranging a concave Fresnel lens on the light source side of a laminating liquid crystal panel and a convex Fresnel lens on an optical system side. CONSTITUTION:After the light from the light source 2 is converged by the Fresnel lens 3 equal to the concave lens disposed in the ready-made OHP or a device having the same structure, the converged light is made incident on the laminating liquid crystal panels 4 and 14 as objects to be projected after adjusted to parallel light once by the Fresnel lens 5 equal to the concave lens. Then, image light passing through the laminating panels 4 and 14 is condensed by the Fresnel lens 6 equal to the convex lens and made incident on the optical system for enlarging and projecting, for example, an image-formation lens. The light can be made perpendicularly incident on the panel and failures such as the deviation of picture element, etc., can be evaded. Thus, the ready-made OHP can be used.
JP62200914A 1987-08-13 1987-08-13 Projection color display device Expired - Fee Related JP2588541B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62200914A JP2588541B2 (en) 1987-08-13 1987-08-13 Projection color display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62200914A JP2588541B2 (en) 1987-08-13 1987-08-13 Projection color display device

Publications (2)

Publication Number Publication Date
JPS6444925A true JPS6444925A (en) 1989-02-17
JP2588541B2 JP2588541B2 (en) 1997-03-05

Family

ID=16432374

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62200914A Expired - Fee Related JP2588541B2 (en) 1987-08-13 1987-08-13 Projection color display device

Country Status (1)

Country Link
JP (1) JP2588541B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0259788A (en) * 1988-08-25 1990-02-28 Fujitsu Ltd Liquid crystal display device for enlarged projection
JPH03146941A (en) * 1989-11-02 1991-06-21 Toshiba Corp Liquid crystal projection type display device
JPH05257114A (en) * 1992-03-13 1993-10-08 Hitachi Ltd Liquid crystal projection type display

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6313019A (en) * 1986-07-04 1988-01-20 Hitachi Ltd Liquid crystal display device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6313019A (en) * 1986-07-04 1988-01-20 Hitachi Ltd Liquid crystal display device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0259788A (en) * 1988-08-25 1990-02-28 Fujitsu Ltd Liquid crystal display device for enlarged projection
JPH03146941A (en) * 1989-11-02 1991-06-21 Toshiba Corp Liquid crystal projection type display device
JPH05257114A (en) * 1992-03-13 1993-10-08 Hitachi Ltd Liquid crystal projection type display

Also Published As

Publication number Publication date
JP2588541B2 (en) 1997-03-05

Similar Documents

Publication Publication Date Title
EP0192023A3 (en) Liquid crystal projector
JPS6313019A (en) Liquid crystal display device
JPS6444925A (en) Projection type color display device
ES452182A1 (en) Color television camera with internal registration
JPS5435623A (en) Video projector
JPS6468740A (en) Projection type display device
GB891348A (en) Improvements in and relating to optical comparators
FR2455756A1 (en) Epidiascope for transparencies and overlays - has dioptric lens which projects image onto fresnel lens on table for reflecting onto screen
JPS644102Y2 (en)
JPH0310503Y2 (en)
JPS6432291A (en) Back projection type display device
JPS57189008A (en) Transit with image pickup system by television
JPS6430978U (en)
JPH02277095A (en) Projection type liquid crystal display device
JPS55133012A (en) Projection system
Hanai et al. Development of high resolution liquid crystal projector XV-EIZ.
JPH0262476U (en)
JPS55141872A (en) Extender for television screen
JPS5758173A (en) Picture formation device
JPH03200134A (en) Overhead projector
JPS6413026U (en)
JPH0267312U (en)
JPS63174341U (en)
JPS56151928A (en) Full circumference sliding projector
JPS6482024A (en) Image output device

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees