JPS57128323A - Optical deflection device - Google Patents

Optical deflection device

Info

Publication number
JPS57128323A
JPS57128323A JP19150281A JP19150281A JPS57128323A JP S57128323 A JPS57128323 A JP S57128323A JP 19150281 A JP19150281 A JP 19150281A JP 19150281 A JP19150281 A JP 19150281A JP S57128323 A JPS57128323 A JP S57128323A
Authority
JP
Japan
Prior art keywords
information
photodetector
main body
voltage
optical elements
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
JP19150281A
Other languages
Japanese (ja)
Inventor
Kinichi Kawashima
Kazuya Matsumoto
Hiroshi Aizawa
Mitsuya Hosoe
Tadashi Ito
Yoshiyuki Takishima
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP19150281A priority Critical patent/JPS57128323A/en
Publication of JPS57128323A publication Critical patent/JPS57128323A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B19/00—Cameras
    • G03B19/02—Still-picture cameras
    • G03B19/12—Reflex cameras with single objective and a movable reflector or a partly-transmitting mirror

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cameras In General (AREA)
  • Liquid Crystal (AREA)

Abstract

PURPOSE:To achieve a device with easy handling and very less power consumption, by using a liquid crystal with different refractive indexes at the application of a voltage and at the nonapplication, and controlling the progressing direction of incident light flux. CONSTITUTION:A photographic lens 22 connected to a camera main body 21 is constituted with optical elements 22a, 22b, 22c and they are interchangeable. A light from an object is made incident to an optical deflection means 23 provided with a camera main body 21 via a filter removable as required, and optical elements 22a, 22b, 22c. Since the means 23 has a reflecting characteristic at the normal state where no voltage is applied, the progressing direction of incident light flux is switched to upper side as shown in figure, and the object can be visuallized via a focusing screen 24, a condenser lens 25, a penta prism 26, and an eyepiece 27. At this observation, in response to an output of a photodetector 29 provided at the back of the penta prism 26 or photodetector 28 provided at the side of the focusing screen 24, display alarm for exposure information such as shutter time, diaphgram information, and that for photographic information can be achieved in a finder.
JP19150281A 1981-11-28 1981-11-28 Optical deflection device Pending JPS57128323A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19150281A JPS57128323A (en) 1981-11-28 1981-11-28 Optical deflection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19150281A JPS57128323A (en) 1981-11-28 1981-11-28 Optical deflection device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP12798273A Division JPS5080127A (en) 1973-11-14 1973-11-14

Publications (1)

Publication Number Publication Date
JPS57128323A true JPS57128323A (en) 1982-08-09

Family

ID=16275713

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19150281A Pending JPS57128323A (en) 1981-11-28 1981-11-28 Optical deflection device

Country Status (1)

Country Link
JP (1) JPS57128323A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5029989A (en) * 1990-02-06 1991-07-09 Motorola, Inc. PLZT shutter
TWI401523B (en) * 2009-04-29 2013-07-11 Univ Nat Cheng Kung A liquid crystal mirror device, and a monocular camera having a liquid crystal mirror device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5029989A (en) * 1990-02-06 1991-07-09 Motorola, Inc. PLZT shutter
TWI401523B (en) * 2009-04-29 2013-07-11 Univ Nat Cheng Kung A liquid crystal mirror device, and a monocular camera having a liquid crystal mirror device

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