JPS57210331A - Transmissive screen - Google Patents

Transmissive screen

Info

Publication number
JPS57210331A
JPS57210331A JP56095718A JP9571881A JPS57210331A JP S57210331 A JPS57210331 A JP S57210331A JP 56095718 A JP56095718 A JP 56095718A JP 9571881 A JP9571881 A JP 9571881A JP S57210331 A JPS57210331 A JP S57210331A
Authority
JP
Japan
Prior art keywords
lenses
lenticular
lens face
fresnel
transmissive 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.)
Granted
Application number
JP56095718A
Other languages
Japanese (ja)
Other versions
JPH0215048B2 (en
Inventor
Yutaro Moriguchi
Akira Izawa
Makoto Honda
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.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing 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 Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP56095718A priority Critical patent/JPS57210331A/en
Publication of JPS57210331A publication Critical patent/JPS57210331A/en
Publication of JPH0215048B2 publication Critical patent/JPH0215048B2/ja
Granted 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 double molding transmissive screen where moir patterns are not generated, by shortening the focal length of lenticular lenses and diffusing shadows of concentric circles of Fresnel lenses before they reach focuses of lenticular lenses. CONSTITUTION:In a transmissive screen where a Fresnel lens face 2 and a lenticular lens face 3 are formed on one face and the other respectively as one body and a light diffusing agent is mixed in materials of one lens face, for example, the Fresnel lens face 2, lenticular lenses 3 are so formed that thier focal length F is 1/2-1/20 of the thickness of a transparent resin 5 of lenses. Thus, since shadows of concentric circles of Fresnel lenses 2 are diffused before reaching focuses 6 of lenticular lenses 3, moir patterns are not generated indepenedently of the pitch ratio of lenses 2 to lenses 3.
JP56095718A 1981-06-20 1981-06-20 Transmissive screen Granted JPS57210331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56095718A JPS57210331A (en) 1981-06-20 1981-06-20 Transmissive screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56095718A JPS57210331A (en) 1981-06-20 1981-06-20 Transmissive screen

Publications (2)

Publication Number Publication Date
JPS57210331A true JPS57210331A (en) 1982-12-23
JPH0215048B2 JPH0215048B2 (en) 1990-04-10

Family

ID=14145252

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56095718A Granted JPS57210331A (en) 1981-06-20 1981-06-20 Transmissive screen

Country Status (1)

Country Link
JP (1) JPS57210331A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63172259A (en) * 1987-01-12 1988-07-15 Seiko Epson Corp Double-sided viewing projection display device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS546948U (en) * 1977-06-16 1979-01-17
JPS55135830A (en) * 1979-04-12 1980-10-23 Matsushita Electric Ind Co Ltd Transmission type screen
JPS5652985A (en) * 1979-10-05 1981-05-12 Matsushita Electric Ind Co Ltd Preparation of transmission screen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS546948U (en) * 1977-06-16 1979-01-17
JPS55135830A (en) * 1979-04-12 1980-10-23 Matsushita Electric Ind Co Ltd Transmission type screen
JPS5652985A (en) * 1979-10-05 1981-05-12 Matsushita Electric Ind Co Ltd Preparation of transmission screen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63172259A (en) * 1987-01-12 1988-07-15 Seiko Epson Corp Double-sided viewing projection display device

Also Published As

Publication number Publication date
JPH0215048B2 (en) 1990-04-10

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