JPS57168242A - Shielding device for photodetection part of single-lens reflex camera - Google Patents

Shielding device for photodetection part of single-lens reflex camera

Info

Publication number
JPS57168242A
JPS57168242A JP56054076A JP5407681A JPS57168242A JP S57168242 A JPS57168242 A JP S57168242A JP 56054076 A JP56054076 A JP 56054076A JP 5407681 A JP5407681 A JP 5407681A JP S57168242 A JPS57168242 A JP S57168242A
Authority
JP
Japan
Prior art keywords
mirror
photodetection
reflex camera
lens reflex
photodetection part
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
JP56054076A
Other languages
Japanese (ja)
Inventor
Mitsuo Kawazoe
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.)
Olympus Corp
Original Assignee
Olympus Corp
Olympus Optical 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 Olympus Corp, Olympus Optical Co Ltd filed Critical Olympus Corp
Priority to JP56054076A priority Critical patent/JPS57168242A/en
Publication of JPS57168242A publication Critical patent/JPS57168242A/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
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/099—Arrangement of photoelectric elements in or on the camera

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Focusing (AREA)
  • Cameras In General (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE:To prevent reflected light of a photodetection part from reaching a photosensitive surface during exposure, by shielding the photodetection part through the elevation of a mirror by a TTL focusing detector for a single-lens reflex camera. CONSTITUTION:In a single-lens reflex camera, a part of light passed through a lens 4 reaches a photodetecting element 3 which detects a focusing state through the transmission part of a main mirror for a viewfinder, and a submirror 2. Since the mirrors hop up during photography, an oblique light beam is incident to the photodetecting element and its reflected light beam reaches a photosensitive surface 15, causing deterioration in picture quality. For this purpose, a shielding member 6 is allowed to shield a photodetection surface by springs 8 and 13, and one end of the spring 13 is brought into contact with the mirror; when the mirror is lowered, the photodetection part is opened and as the mirror is elevated, the photodetection part is shielded, solving said problem.
JP56054076A 1981-04-09 1981-04-09 Shielding device for photodetection part of single-lens reflex camera Pending JPS57168242A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56054076A JPS57168242A (en) 1981-04-09 1981-04-09 Shielding device for photodetection part of single-lens reflex camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56054076A JPS57168242A (en) 1981-04-09 1981-04-09 Shielding device for photodetection part of single-lens reflex camera

Publications (1)

Publication Number Publication Date
JPS57168242A true JPS57168242A (en) 1982-10-16

Family

ID=12960518

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56054076A Pending JPS57168242A (en) 1981-04-09 1981-04-09 Shielding device for photodetection part of single-lens reflex camera

Country Status (1)

Country Link
JP (1) JPS57168242A (en)

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