BE846573A - EXPOSURE CONTROL DEVICE - Google Patents

EXPOSURE CONTROL DEVICE

Info

Publication number
BE846573A
BE846573A BE170926A BE170926A BE846573A BE 846573 A BE846573 A BE 846573A BE 170926 A BE170926 A BE 170926A BE 170926 A BE170926 A BE 170926A BE 846573 A BE846573 A BE 846573A
Authority
BE
Belgium
Prior art keywords
control device
exposure control
exposure
control
Prior art date
Application number
BE170926A
Other languages
French (fr)
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 BE846573A publication Critical patent/BE846573A/en

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/043—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure
    • G03G15/0435—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure by introducing an optical element in the optical path, e.g. a filter
    • 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
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Geometry (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
BE170926A 1975-09-26 1976-09-24 EXPOSURE CONTROL DEVICE BE846573A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US61696175A 1975-09-26 1975-09-26

Publications (1)

Publication Number Publication Date
BE846573A true BE846573A (en) 1977-01-17

Family

ID=24471704

Family Applications (1)

Application Number Title Priority Date Filing Date
BE170926A BE846573A (en) 1975-09-26 1976-09-24 EXPOSURE CONTROL DEVICE

Country Status (4)

Country Link
JP (1) JPS5242133A (en)
BE (1) BE846573A (en)
FR (1) FR2325954A1 (en)
SE (1) SE7610411L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2454638A1 (en) * 1979-04-17 1980-11-14 Angenieux P Ets Variable optical diaphragm esp. for TV cameras - uses liq. crystal cells in pairs in frame controlled by coded switching circuit
GB8618345D0 (en) * 1986-07-28 1986-09-03 Purvis A Optical components
US6437762B1 (en) 1995-01-11 2002-08-20 William A. Birdwell Dynamic diffractive optical transform

Also Published As

Publication number Publication date
FR2325954A1 (en) 1977-04-22
FR2325954B3 (en) 1979-06-01
SE7610411L (en) 1977-03-27
JPS5242133A (en) 1977-04-01

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