JPS6468090A - Multicolor projection type liquid crystal display - Google Patents

Multicolor projection type liquid crystal display

Info

Publication number
JPS6468090A
JPS6468090A JP62224073A JP22407387A JPS6468090A JP S6468090 A JPS6468090 A JP S6468090A JP 62224073 A JP62224073 A JP 62224073A JP 22407387 A JP22407387 A JP 22407387A JP S6468090 A JPS6468090 A JP S6468090A
Authority
JP
Japan
Prior art keywords
reflected
mirror
liquid crystal
dichroic
made incident
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
JP62224073A
Other languages
Japanese (ja)
Other versions
JP2527198B2 (en
Inventor
Kazuyuki Funahata
Keiji Nagae
Yuji Mori
Tadahiko Hashimoto
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62224073A priority Critical patent/JP2527198B2/en
Publication of JPS6468090A publication Critical patent/JPS6468090A/en
Application granted granted Critical
Publication of JP2527198B2 publication Critical patent/JP2527198B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3105—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

PURPOSE:To attain miniaturization, high luminance and high contrast by being composed of a single light source, two dichroic mirrors, projecting system composed of three reflection type liquid crystal elements and projecting lens, and a writing system having a semiconductor laser as a main part. CONSTITUTION:White projected light irradiated from a xenon arc lamp is narrowed down by a lens system 13 and reflected to a dichroic mirror 121 side by a mirror 141 provided on a central part in a projecting lens 16 by an off-axis optical system. Out of the reflected white light, only a blue light component is reflected by the dichroic mirror 121, reflected by a mirror 142 and made incident on a liquid crystal element 151. Out of red and green light components to permeate through the dichroic mirror 121, only the green light component is reflected by a dichroic mirror 122, reflected by a mirror 143 and made incident on a liquid crystal element 152. The red one permeates through the dichroic mirrors 121 and 122 and is made incident on a liquid element 153. Thus, the miniaturization, the high luminance and the high contrast can be attained.
JP62224073A 1987-09-09 1987-09-09 Color projection liquid crystal display Expired - Lifetime JP2527198B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62224073A JP2527198B2 (en) 1987-09-09 1987-09-09 Color projection liquid crystal display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62224073A JP2527198B2 (en) 1987-09-09 1987-09-09 Color projection liquid crystal display

Publications (2)

Publication Number Publication Date
JPS6468090A true JPS6468090A (en) 1989-03-14
JP2527198B2 JP2527198B2 (en) 1996-08-21

Family

ID=16808138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62224073A Expired - Lifetime JP2527198B2 (en) 1987-09-09 1987-09-09 Color projection liquid crystal display

Country Status (1)

Country Link
JP (1) JP2527198B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0400993A2 (en) * 1989-06-02 1990-12-05 Matsushita Electric Works, Ltd. Projection-type image display apparatus
JPH03119886A (en) * 1989-10-02 1991-05-22 Matsushita Electric Ind Co Ltd Luminance signal/chrominance signal separator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6113885A (en) * 1984-06-29 1986-01-22 Sony Corp Projecting type picture image display device
JPS61177079A (en) * 1985-01-31 1986-08-08 Sony Corp Projection type television receiver

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6113885A (en) * 1984-06-29 1986-01-22 Sony Corp Projecting type picture image display device
JPS61177079A (en) * 1985-01-31 1986-08-08 Sony Corp Projection type television receiver

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0400993A2 (en) * 1989-06-02 1990-12-05 Matsushita Electric Works, Ltd. Projection-type image display apparatus
EP0400993A3 (en) * 1989-06-02 1991-10-02 Matsushita Electric Works, Ltd. Projection-type image display apparatus
JPH03119886A (en) * 1989-10-02 1991-05-22 Matsushita Electric Ind Co Ltd Luminance signal/chrominance signal separator

Also Published As

Publication number Publication date
JP2527198B2 (en) 1996-08-21

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