JPS5785033A - Reflection photometric device of single-lens reflex camera - Google Patents

Reflection photometric device of single-lens reflex camera

Info

Publication number
JPS5785033A
JPS5785033A JP55163000A JP16300080A JPS5785033A JP S5785033 A JPS5785033 A JP S5785033A JP 55163000 A JP55163000 A JP 55163000A JP 16300080 A JP16300080 A JP 16300080A JP S5785033 A JPS5785033 A JP S5785033A
Authority
JP
Japan
Prior art keywords
light beam
photometry
photodetecting
partial
mirror
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
JP55163000A
Other languages
Japanese (ja)
Inventor
Takashi Kodama
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 JP55163000A priority Critical patent/JPS5785033A/en
Publication of JPS5785033A publication Critical patent/JPS5785033A/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

Abstract

PURPOSE:To separate a light beam required for partial photometry and average photometry almost completely without using a mechanical mechanism, by photodetecting a light beam of an object to be photographed, to a photodetecting body by a passive reflector having a directivity reflection part provided on the rear of a moving mirror. CONSTITUTION:A condensing lens 25 is placed on a half-mirror part 22a of a moving mirror 22, and on its reverse side, a passive reflector 27 is installed so as to be freely rotatable. In the center of the passive reflector 27, a directivity reflection part 37 consisting of a lot of microscopic partial spherical surfaces 37a is formed, and on the lower part of the mirror 22, photodetecting bodies 31, 36 for both average photometry and partial photometry are placed. In this constitution, a light beam around an optical axis OA, among the light beams of an object to be photographed is reflected by a reflection part 37, proceeds to the photodetecting body 36, a circumferential light beam being separated from the optical axis OA proceeds to the photodetecting body 31, and as for these outputs, the exposure condition is operated by a prescribed photometric circuit. In this way, a light beam required for partial photometry and average photometry is separated almost completely without using a mechanical mechanism.
JP55163000A 1980-11-18 1980-11-18 Reflection photometric device of single-lens reflex camera Pending JPS5785033A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55163000A JPS5785033A (en) 1980-11-18 1980-11-18 Reflection photometric device of single-lens reflex camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55163000A JPS5785033A (en) 1980-11-18 1980-11-18 Reflection photometric device of single-lens reflex camera

Publications (1)

Publication Number Publication Date
JPS5785033A true JPS5785033A (en) 1982-05-27

Family

ID=15765287

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55163000A Pending JPS5785033A (en) 1980-11-18 1980-11-18 Reflection photometric device of single-lens reflex camera

Country Status (1)

Country Link
JP (1) JPS5785033A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5936231A (en) * 1982-08-24 1984-02-28 Kyocera Corp Photometric device of single-lens reflex camera
JPS5936232A (en) * 1982-08-24 1984-02-28 Kyocera Corp Photometric device of single-lens reflex camera
US4514073A (en) * 1982-10-21 1985-04-30 Minolta Camera Kabushiki Kaisha Automatic exposure control camera

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5936231A (en) * 1982-08-24 1984-02-28 Kyocera Corp Photometric device of single-lens reflex camera
JPS5936232A (en) * 1982-08-24 1984-02-28 Kyocera Corp Photometric device of single-lens reflex camera
US4514073A (en) * 1982-10-21 1985-04-30 Minolta Camera Kabushiki Kaisha Automatic exposure control camera

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