SE9403222L - Color filters based on liquid crystals intended for electronic photography and monitors. - Google Patents

Color filters based on liquid crystals intended for electronic photography and monitors.

Info

Publication number
SE9403222L
SE9403222L SE9403222A SE9403222A SE9403222L SE 9403222 L SE9403222 L SE 9403222L SE 9403222 A SE9403222 A SE 9403222A SE 9403222 A SE9403222 A SE 9403222A SE 9403222 L SE9403222 L SE 9403222L
Authority
SE
Sweden
Prior art keywords
plates
plate
colour
electronic photography
monitors
Prior art date
Application number
SE9403222A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE503733C2 (en
SE9403222D0 (en
Inventor
Ingolf Dahl
Original Assignee
Hasselblad Ab Victor
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 Hasselblad Ab Victor filed Critical Hasselblad Ab Victor
Priority to SE9403222A priority Critical patent/SE503733C2/en
Publication of SE9403222D0 publication Critical patent/SE9403222D0/en
Priority to DE19581826T priority patent/DE19581826T1/en
Priority to JP8511667A priority patent/JPH09505912A/en
Priority to PCT/SE1995/001092 priority patent/WO1996010211A1/en
Publication of SE9403222L publication Critical patent/SE9403222L/en
Publication of SE503733C2 publication Critical patent/SE503733C2/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
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/288—Filters employing polarising elements, e.g. Lyot or Solc filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G02F1/13471—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells
    • G02F1/13473—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells for wavelength filtering or for colour display without the use of colour mosaic filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/141—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent using ferroelectric liquid crystals

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal (AREA)
  • Optical Filters (AREA)

Abstract

A liquid crystal switchable colour filter is described. For electronic photography it can be configured to switch between the colours cyan, magenta, and yellow, to get good properties for colour separation. It could alternatively be configured to switch between the colours red, green, blue and colourless for display purposes, e.g. in field sequential colour displays. The filter consists of a stack of plates, the first and seventh plate being polarizers, the second, fourth, and sixth plate being retarder plates (synonym "phase plates" or "birefringent plates") or groups of retarder plates, the third and fifth being liquid crystal panels (cells), that could be a ferroelectric smectic-C cell in the bookshelf geometry, and the eighth plate being a passive colour filter. The optical properties of this plate combination can be optimised by varying the thicknesses of the components and the angles between the optical directions along the plates.
SE9403222A 1994-09-26 1994-09-26 Color filters based on liquid crystals intended for electronic photography and monitors SE503733C2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE9403222A SE503733C2 (en) 1994-09-26 1994-09-26 Color filters based on liquid crystals intended for electronic photography and monitors
DE19581826T DE19581826T1 (en) 1994-09-26 1995-09-25 Liquid crystal color filters for electronic photography and for displays
JP8511667A JPH09505912A (en) 1994-09-26 1995-09-25 Liquid crystal color filters for electrophotography and displays
PCT/SE1995/001092 WO1996010211A1 (en) 1994-09-26 1995-09-25 Liquid crystal colour filter for electronic photography and for displays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9403222A SE503733C2 (en) 1994-09-26 1994-09-26 Color filters based on liquid crystals intended for electronic photography and monitors

Publications (3)

Publication Number Publication Date
SE9403222D0 SE9403222D0 (en) 1994-09-26
SE9403222L true SE9403222L (en) 1996-03-27
SE503733C2 SE503733C2 (en) 1996-08-19

Family

ID=20395364

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9403222A SE503733C2 (en) 1994-09-26 1994-09-26 Color filters based on liquid crystals intended for electronic photography and monitors

Country Status (4)

Country Link
JP (1) JPH09505912A (en)
DE (1) DE19581826T1 (en)
SE (1) SE503733C2 (en)
WO (1) WO1996010211A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6280034B1 (en) * 1999-07-30 2001-08-28 Philips Electronics North America Corporation Efficient two-panel projection system employing complementary illumination
JP3923689B2 (en) 1999-09-30 2007-06-06 株式会社東芝 Color shutter and color image display method
WO2004036161A2 (en) 2002-10-18 2004-04-29 Board Of Regents, The University Of Texas System Customizable spectral profiles for filtering
WO2006036657A2 (en) 2004-09-22 2006-04-06 Board Of Regents, The University Of Texas System Illumination sources and customizable spectral profiles
US8570498B2 (en) 2009-05-15 2013-10-29 Board Of Regents, The University Of Texas System Filters, illuminants, and customized spectral profiles for reducing perceptible changes in appearance
CN110784637B (en) * 2019-11-20 2021-03-26 维沃移动通信（杭州）有限公司 Camera module and electronic equipment

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4989954A (en) * 1987-10-09 1991-02-05 Matsushita Electric Industrial Co., Ltd. Projection type liquid cyrstal display device
US5231521A (en) * 1989-10-30 1993-07-27 The University Of Colorado Foundation, Inc. Chiral smectic liquid crystal polarization interference filters
US5347378A (en) * 1991-04-04 1994-09-13 Displaytech, Inc. Fast switching color filters for frame-sequential video using ferroelectric liquid crystal color-selective filters

Also Published As

Publication number Publication date
JPH09505912A (en) 1997-06-10
SE503733C2 (en) 1996-08-19
WO1996010211A1 (en) 1996-04-04
SE9403222D0 (en) 1994-09-26
DE19581826T1 (en) 1998-01-08

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