JPS6448056A - Electronic ohp - Google Patents

Electronic ohp

Info

Publication number
JPS6448056A
JPS6448056A JP20559287A JP20559287A JPS6448056A JP S6448056 A JPS6448056 A JP S6448056A JP 20559287 A JP20559287 A JP 20559287A JP 20559287 A JP20559287 A JP 20559287A JP S6448056 A JPS6448056 A JP S6448056A
Authority
JP
Japan
Prior art keywords
information
strong
ohp
light
utmost
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
JP20559287A
Other languages
Japanese (ja)
Inventor
Yoko Nakamura
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP20559287A priority Critical patent/JPS6448056A/en
Publication of JPS6448056A publication Critical patent/JPS6448056A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To take out the light quantity of information to the utmost and to brighten a projected image by setting the angle between a direction where polarization characteristic including information of an overhead projector (OHP) is strong and an incident direction on a metallic surface to nearly 90 deg.. CONSTITUTION:Outgoing light 6 from a unit 2 using a TN type liquid crystal light valve 1 functioning as an OHP information source is near to linear polarization which has strong polarized wave characteristic 7 in a direction perpendicular to the surface of paper and it is made incident on a reflector 4 through a lens 3 to project the reflected light on a screen 5. By setting the angle between a direction where the polarization characteristic is strong and an incident direction on the metallic surface 4 to nearly 90 deg., the light quantity of the information can be taken out to the utmost and the projected image can be brightened.
JP20559287A 1987-08-19 1987-08-19 Electronic ohp Pending JPS6448056A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20559287A JPS6448056A (en) 1987-08-19 1987-08-19 Electronic ohp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20559287A JPS6448056A (en) 1987-08-19 1987-08-19 Electronic ohp

Publications (1)

Publication Number Publication Date
JPS6448056A true JPS6448056A (en) 1989-02-22

Family

ID=16509434

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20559287A Pending JPS6448056A (en) 1987-08-19 1987-08-19 Electronic ohp

Country Status (1)

Country Link
JP (1) JPS6448056A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07281299A (en) * 1995-01-24 1995-10-27 Casio Comput Co Ltd Projection type liquid crystal display device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07281299A (en) * 1995-01-24 1995-10-27 Casio Comput Co Ltd Projection type liquid crystal display device

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