SG38789G - Optical spatial frequency filter - Google Patents

Optical spatial frequency filter

Info

Publication number
SG38789G
SG38789G SG387/89A SG38789A SG38789G SG 38789 G SG38789 G SG 38789G SG 387/89 A SG387/89 A SG 387/89A SG 38789 A SG38789 A SG 38789A SG 38789 G SG38789 G SG 38789G
Authority
SG
Singapore
Prior art keywords
spatial frequency
frequency filter
optical spatial
optical
filter
Prior art date
Application number
SG387/89A
Other languages
English (en)
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of SG38789G publication Critical patent/SG38789G/en

Links

Classifications

    • 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
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/0988—Diaphragms, spatial filters, masks for removing or filtering a part of the beam
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3083—Birefringent or phase retarding elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
    • H04N23/12—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths with one sensor only

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Television Image Signal Generators (AREA)
  • Polarising Elements (AREA)
  • Optical Filters (AREA)
SG387/89A 1984-04-06 1989-06-21 Optical spatial frequency filter SG38789G (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/597,290 US4575193A (en) 1984-04-06 1984-04-06 Optical spatial frequency filter
PCT/US1985/000463 WO1985004730A1 (en) 1984-04-06 1985-03-21 Optical spatial frequency filter

Publications (1)

Publication Number Publication Date
SG38789G true SG38789G (en) 1989-11-17

Family

ID=24390890

Family Applications (1)

Application Number Title Priority Date Filing Date
SG387/89A SG38789G (en) 1984-04-06 1989-06-21 Optical spatial frequency filter

Country Status (6)

Country Link
US (1) US4575193A (de)
EP (1) EP0181872B1 (de)
JP (1) JPS61501798A (de)
DE (1) DE3568499D1 (de)
SG (1) SG38789G (de)
WO (1) WO1985004730A1 (de)

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US6252638B1 (en) 1995-05-23 2001-06-26 Colorlink, Inc. Color controllable illumination device, indicator lights, transmissive windows and color filters employing retarder stacks
US6707516B1 (en) 1995-05-23 2004-03-16 Colorlink, Inc. Single-panel field-sequential color display systems
US6882384B1 (en) * 1995-05-23 2005-04-19 Colorlink, Inc. Color filters and sequencers using color selective light modulators
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US6417892B1 (en) 1995-05-23 2002-07-09 Colorlink, Inc. Color filters, sequencers and displays using color selective light modulators
US6049367A (en) * 1995-05-23 2000-04-11 Colorlink, Inc. Polarization manipulating device modulator with retarder stack which preconditions light for modulation and isotropic states
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US5929946A (en) * 1995-05-23 1999-07-27 Colorlink, Inc. Retarder stack for preconditioning light for a modulator having modulation and isotropic states of polarization
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JP3883601B2 (ja) * 1996-03-27 2007-02-21 富士通株式会社 光イコライザ
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US6545783B1 (en) 1996-10-29 2003-04-08 Chorum Technologies Lp Optical wavelength add/drop multiplexer
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US6243200B1 (en) 2000-03-02 2001-06-05 Chorum Technologies, Inc. Optical wavelength router based on polarization interferometer
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US6711311B2 (en) * 2000-04-20 2004-03-23 Jds Uniphase Inc. Polarization beam splitter or combiner
US6536898B1 (en) * 2000-09-15 2003-03-25 The Regents Of The University Of Colorado Extended depth of field optics for human vision
US6873733B2 (en) 2001-01-19 2005-03-29 The Regents Of The University Of Colorado Combined wavefront coding and amplitude contrast imaging systems
US7173662B1 (en) * 2001-04-30 2007-02-06 Massachusetts Institute Of Technology Foveating imaging system and method employing a spatial light modulator to selectively modulate an input image
US6515786B1 (en) 2001-08-03 2003-02-04 Chorum Technologies Lp Bandwidth variable wavelength router and method of operation
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JP4533088B2 (ja) * 2004-11-01 2010-08-25 キヤノン株式会社 光学フィルタ及びそれを有する撮像装置
US20060170797A1 (en) * 2005-02-02 2006-08-03 Biernath Rolf W Article having a birefringent surface for use as a blur filter
US20060170808A1 (en) * 2005-02-02 2006-08-03 Biernath Rolf W Article having a birefringent surface for use as a blur filter
JP2006243277A (ja) * 2005-03-02 2006-09-14 Fujinon Corp 色分離光学系装置
WO2008020449A2 (en) * 2006-08-16 2008-02-21 Xceed Imaging Ltd. Method and system for imaging with a zoom
US9347832B2 (en) * 2008-05-15 2016-05-24 Bodkin Design And Engineering Llc Optical systems and methods employing a polarimetric optical filter
JP6108774B2 (ja) * 2012-11-08 2017-04-05 キヤノン株式会社 レーザ装置およびそれを用いた光音響装置
US10705799B2 (en) 2015-03-04 2020-07-07 Carol Y. Scarlett Transmission of information through the use of quantum-optical effects within a multi-layered birefringent structure
US10007044B2 (en) * 2015-06-24 2018-06-26 Florida A&M University Optical system for precision control of an electric field within the focus of a laser beam
US10178381B2 (en) 2015-07-14 2019-01-08 Microsoft Technology Licensing, Llc Depth-spatial frequency-response assessment
US11269193B2 (en) * 2017-11-27 2022-03-08 Liqxtal Technology Inc. Optical sensing device and structured light projector
CN108051947B (zh) * 2018-01-09 2024-04-12 河北工业大学 一种色域拓宽装置
JP7433655B2 (ja) * 2018-05-14 2024-02-20 ワイ． スカーレット，キャロル 多層複屈折構造内の量子光学的効果の使用を通じた乱数の生成

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JPS5888984A (ja) * 1981-11-24 1983-05-27 Toshiba Corp カラ−撮像装置
JPS58100802A (ja) * 1981-12-11 1983-06-15 Hitachi Ltd 固体撮像装置
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Also Published As

Publication number Publication date
EP0181872A1 (de) 1986-05-28
WO1985004730A1 (en) 1985-10-24
EP0181872B1 (de) 1989-03-01
JPS61501798A (ja) 1986-08-21
US4575193A (en) 1986-03-11
DE3568499D1 (en) 1989-04-06

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