JPS57118227A - Shutter - Google Patents

Shutter

Info

Publication number
JPS57118227A
JPS57118227A JP406381A JP406381A JPS57118227A JP S57118227 A JPS57118227 A JP S57118227A JP 406381 A JP406381 A JP 406381A JP 406381 A JP406381 A JP 406381A JP S57118227 A JPS57118227 A JP S57118227A
Authority
JP
Japan
Prior art keywords
liquid crystal
voltage
crystal element
exposure
film
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
JP406381A
Other languages
Japanese (ja)
Inventor
Isao Matsui
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP406381A priority Critical patent/JPS57118227A/en
Publication of JPS57118227A publication Critical patent/JPS57118227A/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
    • G02F1/1313—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 specially adapted for a particular application

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Shutters For Cameras (AREA)
  • Liquid Crystal (AREA)

Abstract

PURPOSE:To obtain a focal plane shutter which can expose the entire surface of a film to the light at one time, by using a liqud crystal element in place of a mechanical opening/closing member of a camera shutter. CONSTITUTION:An ordinary mobile mirror 2 (also serving as a light shielding matter) is provided at the rear side of a lens 1 of a camera, and the opening and closing liquid crystal elements 4 and 5 are piled on each other at the front side of a film 3. These elements 4 and 5 are actuated by the voltage applied from an electric circuit for operation of liquid crystal element. The liquid crystal element is a negative type like a phase shift guest-host type, etc. with a high contrast. When photographing, the mirror 2 is first raised up with the voltage applied to the element 5 to have the light transmitting state. Then the voltage is applied to the element 4 to start the exposure, and the exposure is over when the application of voltage is discontinued to the element 5.
JP406381A 1981-01-14 1981-01-14 Shutter Pending JPS57118227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP406381A JPS57118227A (en) 1981-01-14 1981-01-14 Shutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP406381A JPS57118227A (en) 1981-01-14 1981-01-14 Shutter

Publications (1)

Publication Number Publication Date
JPS57118227A true JPS57118227A (en) 1982-07-23

Family

ID=11574381

Family Applications (1)

Application Number Title Priority Date Filing Date
JP406381A Pending JPS57118227A (en) 1981-01-14 1981-01-14 Shutter

Country Status (1)

Country Link
JP (1) JPS57118227A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07239493A (en) * 1994-02-15 1995-09-12 Ind Technol Res Inst Nonmechanical camera shutter, diaphragm application method and applied device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07239493A (en) * 1994-02-15 1995-09-12 Ind Technol Res Inst Nonmechanical camera shutter, diaphragm application method and applied device

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