JPS4910265B1 - - Google Patents

Info

Publication number
JPS4910265B1
JPS4910265B1 JP45114309A JP11430970A JPS4910265B1 JP S4910265 B1 JPS4910265 B1 JP S4910265B1 JP 45114309 A JP45114309 A JP 45114309A JP 11430970 A JP11430970 A JP 11430970A JP S4910265 B1 JPS4910265 B1 JP S4910265B1
Authority
JP
Japan
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
JP45114309A
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 filed Critical
Publication of JPS4910265B1 publication Critical patent/JPS4910265B1/ja
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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
    • G02B27/46—Systems using spatial filters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Projection Apparatus (AREA)
JP45114309A 1970-03-14 1970-12-21 Pending JPS4910265B1 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2012191A DE2012191C3 (de) 1970-03-14 1970-03-14 Verfahren und Vorrichtung zur Herstellung von Projektionsflächen beliebiger Indicatrix

Publications (1)

Publication Number Publication Date
JPS4910265B1 true JPS4910265B1 (ja) 1974-03-09

Family

ID=5765097

Family Applications (1)

Application Number Title Priority Date Filing Date
JP45114309A Pending JPS4910265B1 (ja) 1970-03-14 1970-12-21

Country Status (3)

Country Link
US (1) US3698810A (ja)
JP (1) JPS4910265B1 (ja)
DE (1) DE2012191C3 (ja)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4082415A (en) * 1974-03-27 1978-04-04 Trw Inc. Holographic lens array and method for making the same
JPS5492232A (en) * 1977-12-28 1979-07-21 Canon Inc Camera
DE2951207A1 (de) * 1978-12-26 1980-07-10 Canon Kk Verfahren zur optischen herstellung einer streuplatte
JPS5590931A (en) * 1978-12-29 1980-07-10 Canon Inc Production of micro structure element array
US4427265A (en) * 1980-06-27 1984-01-24 Canon Kabushiki Kaisha Diffusion plate
DE3442781A1 (de) * 1983-11-26 1985-06-05 Olympus Optical Co., Ltd., Tokio/Tokyo Bildplatte und verfahren zu ihrer herstellung
US5471327A (en) * 1993-05-14 1995-11-28 Kaiser Optical Systems, Inc. Holographic diffuser for back-lit display
EP0714348A4 (en) * 1993-07-27 1998-05-06 Physical Optics Corp DEVICE FOR DESTRUCTURING AND SHAPING A LIGHT SOURCE
CA2168106C (en) * 1993-07-27 2002-08-20 Joel Petersen High brightness directional viewing screen
US7837361B2 (en) * 2000-07-14 2010-11-23 Ledalite Architectural Products Light control devices implemented with diffusers having controllable diffusion characteristics
AU2001273488A1 (en) 2000-07-14 2002-02-05 Ashdown, Ian Light control devices with kinoform diffusers
JPWO2005078483A1 (ja) * 2004-02-18 2007-10-18 日本ゼオン株式会社 光学部材、その製造方法およびディスプレイ装置
US8047673B2 (en) * 2007-04-10 2011-11-01 Philips Electronics Ltd Light control device exhibiting batwing luminous intensity distributions in upper and lower hemispheres

Also Published As

Publication number Publication date
US3698810A (en) 1972-10-17
DE2012191A1 (de) 1971-10-07
DE2012191C3 (de) 1978-08-31
DE2012191B2 (de) 1977-12-01

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