GB9304910D0 - Optical systems - Google Patents

Optical systems

Info

Publication number
GB9304910D0
GB9304910D0 GB939304910A GB9304910A GB9304910D0 GB 9304910 D0 GB9304910 D0 GB 9304910D0 GB 939304910 A GB939304910 A GB 939304910A GB 9304910 A GB9304910 A GB 9304910A GB 9304910 D0 GB9304910 D0 GB 9304910D0
Authority
GB
United Kingdom
Prior art keywords
optical systems
optical
systems
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.)
Pending
Application number
GB939304910A
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.)
BAE Systems Electronics Ltd
Original Assignee
GEC Marconi Ltd
Marconi 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 GEC Marconi Ltd, Marconi Co Ltd filed Critical GEC Marconi Ltd
Priority to GB939304910A priority Critical patent/GB9304910D0/en
Publication of GB9304910D0 publication Critical patent/GB9304910D0/en
Priority to PCT/GB1994/000445 priority patent/WO1994021078A1/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/75—Circuitry for compensating brightness variation in the scene by influencing optical camera components

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Dispersion Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
GB939304910A 1993-03-10 1993-03-10 Optical systems Pending GB9304910D0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB939304910A GB9304910D0 (en) 1993-03-10 1993-03-10 Optical systems
PCT/GB1994/000445 WO1994021078A1 (en) 1993-03-10 1994-03-08 Optical systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB939304910A GB9304910D0 (en) 1993-03-10 1993-03-10 Optical systems

Publications (1)

Publication Number Publication Date
GB9304910D0 true GB9304910D0 (en) 1993-04-28

Family

ID=10731811

Family Applications (1)

Application Number Title Priority Date Filing Date
GB939304910A Pending GB9304910D0 (en) 1993-03-10 1993-03-10 Optical systems

Country Status (2)

Country Link
GB (1) GB9304910D0 (en)
WO (1) WO1994021078A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546248A (en) * 1983-09-08 1985-10-08 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Wide dynamic range video camera
US4877310A (en) * 1988-08-04 1989-10-31 Xerox Corporation Electronically variable MTF filter for image sensor arrays
JP2568695B2 (en) * 1989-06-23 1997-01-08 キヤノン株式会社 Variable soft focus filter
US5156452A (en) * 1989-07-20 1992-10-20 Paul Drzaic Encapsulated liquid crystal apparatus having low off-axis haze and operable by a sine-wave power source
JPH04305637A (en) * 1991-03-29 1992-10-28 A G Technol Kk Projection type liquid crystal display device
JPH0534767A (en) * 1991-07-29 1993-02-12 Sony Corp Lens cap for video camera
JPH0553175A (en) * 1991-08-21 1993-03-05 Minolta Camera Co Ltd Camera
JP3147447B2 (en) * 1991-12-17 2001-03-19 セイコーエプソン株式会社 Liquid crystal element and light intensity adjustment mechanism

Also Published As

Publication number Publication date
WO1994021078A1 (en) 1994-09-15

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