JPH0372972B2 - - Google Patents

Info

Publication number
JPH0372972B2
JPH0372972B2 JP57205747A JP20574782A JPH0372972B2 JP H0372972 B2 JPH0372972 B2 JP H0372972B2 JP 57205747 A JP57205747 A JP 57205747A JP 20574782 A JP20574782 A JP 20574782A JP H0372972 B2 JPH0372972 B2 JP H0372972B2
Authority
JP
Japan
Prior art keywords
lens
lenticular lens
ratio
fresnel lens
width
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.)
Expired - Lifetime
Application number
JP57205747A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5995525A (ja
Inventor
Yukio Yada
Koichi Inagaki
Hideo Takahashi
Masao Inoe
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.)
Mitsubishi Rayon Co Ltd
Original Assignee
Mitsubishi Rayon 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 Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Priority to JP20574782A priority Critical patent/JPS5995525A/ja
Publication of JPS5995525A publication Critical patent/JPS5995525A/ja
Publication of JPH0372972B2 publication Critical patent/JPH0372972B2/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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/18—Focusing aids
    • G03B13/30—Focusing aids indicating depth of field
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
    • 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)
  • Optics & Photonics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
JP20574782A 1982-11-24 1982-11-24 背面投影スクリ−ン Granted JPS5995525A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20574782A JPS5995525A (ja) 1982-11-24 1982-11-24 背面投影スクリ−ン

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20574782A JPS5995525A (ja) 1982-11-24 1982-11-24 背面投影スクリ−ン

Publications (2)

Publication Number Publication Date
JPS5995525A JPS5995525A (ja) 1984-06-01
JPH0372972B2 true JPH0372972B2 (de) 1991-11-20

Family

ID=16511982

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20574782A Granted JPS5995525A (ja) 1982-11-24 1982-11-24 背面投影スクリ−ン

Country Status (1)

Country Link
JP (1) JPS5995525A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100397241C (zh) * 1997-09-12 2008-06-25 大日本印刷株式会社 投影屏

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH077179B2 (ja) * 1984-06-13 1995-01-30 株式会社日立製作所 画像投写装置
US4730897A (en) * 1987-04-21 1988-03-15 North American Philips Corporation Projection screen having high resolution and good mechanical stability
US4900129A (en) * 1988-12-16 1990-02-13 Minnesota Mining And Manufacturing Company Dual grooved Fresnel lens for overhead projection
JPH03149540A (ja) * 1989-11-07 1991-06-26 Pioneer Electron Corp 背面投影式スクリーン
CN1643449A (zh) 2002-03-28 2005-07-20 大日本印刷株式会社 菲涅耳透镜片
ES2553420T3 (es) * 2009-12-28 2015-12-09 Pirelli & C. S.P.A. Concentrador fotovoltaico con lente óptica escalonada y procedimiento para diseñar el mismo
WO2013026440A2 (de) * 2011-08-21 2013-02-28 Jenoptik Polymer Systems Gmbh Led-leuchte

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4830929A (de) * 1971-08-24 1973-04-23
JPS5382329A (en) * 1976-12-23 1978-07-20 Polaroid Corp Back projection type screen and projector
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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4830929A (de) * 1971-08-24 1973-04-23
JPS5382329A (en) * 1976-12-23 1978-07-20 Polaroid Corp Back projection type screen and projector
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
CN100397241C (zh) * 1997-09-12 2008-06-25 大日本印刷株式会社 投影屏

Also Published As

Publication number Publication date
JPS5995525A (ja) 1984-06-01

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