JPS5794740A - Transmission type screen - Google Patents

Transmission type screen

Info

Publication number
JPS5794740A
JPS5794740A JP17122780A JP17122780A JPS5794740A JP S5794740 A JPS5794740 A JP S5794740A JP 17122780 A JP17122780 A JP 17122780A JP 17122780 A JP17122780 A JP 17122780A JP S5794740 A JPS5794740 A JP S5794740A
Authority
JP
Japan
Prior art keywords
lens
triangular projection
lenticular
transparent body
screen
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
JP17122780A
Other languages
Japanese (ja)
Inventor
Kazuhiko Kodama
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 JP17122780A priority Critical patent/JPS5794740A/en
Publication of JPS5794740A publication Critical patent/JPS5794740A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens
    • G03B21/625—Lenticular translucent screens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

PURPOSE:To obtain a transmission screen having a field of view of a wide angle, by inserting a transparent body having a triangular projection in parallel with a lenticular lens, between a Fresnel lens and the lenticular lens. CONSTITUTION:On the reverse side of a lenticular screen 1, a 60 deg. reverse V- shaped notch is formed, a transparent body 10 having a triangular projection corresponding to the notch concerned, and also a Fresnel lens 2 is placed under said transparent body. Incident light beams being parallel to an optical axis of the Fresnel lens 2 are totally reflected by one side of the triangular projection, are made incident to the other side, and also are refracted by a refraction surface 6 of a lens of the lenticular screen. Accordingly, when the light beams reflected by both the sides of the triangular projection are emitted from the lenticular screen, they have a very large diffusion angle as shown in the figure.
JP17122780A 1980-12-03 1980-12-03 Transmission type screen Pending JPS5794740A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17122780A JPS5794740A (en) 1980-12-03 1980-12-03 Transmission type screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17122780A JPS5794740A (en) 1980-12-03 1980-12-03 Transmission type screen

Publications (1)

Publication Number Publication Date
JPS5794740A true JPS5794740A (en) 1982-06-12

Family

ID=15919395

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17122780A Pending JPS5794740A (en) 1980-12-03 1980-12-03 Transmission type screen

Country Status (1)

Country Link
JP (1) JPS5794740A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6438634U (en) * 1987-09-03 1989-03-08
WO2000070404A1 (en) * 1999-05-14 2000-11-23 Microsharp Corporation Limited Display and light-transmitting plate for a display

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6438634U (en) * 1987-09-03 1989-03-08
JPH0521073Y2 (en) * 1987-09-03 1993-05-31
WO2000070404A1 (en) * 1999-05-14 2000-11-23 Microsharp Corporation Limited Display and light-transmitting plate for a display

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