JPS57118227A - Shutter - Google Patents
ShutterInfo
- 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
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.
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)
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 |
-
1981
- 1981-01-14 JP JP406381A patent/JPS57118227A/en active Pending
Cited By (1)
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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