JPS58107520A - Photometry device of camera - Google Patents

Photometry device of camera

Info

Publication number
JPS58107520A
JPS58107520A JP56206130A JP20613081A JPS58107520A JP S58107520 A JPS58107520 A JP S58107520A JP 56206130 A JP56206130 A JP 56206130A JP 20613081 A JP20613081 A JP 20613081A JP S58107520 A JPS58107520 A JP S58107520A
Authority
JP
Japan
Prior art keywords
photometric
mask
light shielding
lens
enters
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
JP56206130A
Other languages
Japanese (ja)
Inventor
Makoto Katsuma
Akira Hiramatsu
Hiroyasu Murakami
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 JP56206130A priority Critical patent/JPS58107520A/en
Priority claimed from US06/429,521 external-priority patent/US4465355A/en
Publication of JPS58107520A publication Critical patent/JPS58107520A/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 obtain a photometry device which can always obtain the accurate photometric information, by performing the switching between the reference level of photometry obtained when a light shielding element is cut off and that obtained when the light shielding element is not cut off. CONSTITUTION:A pentaprism 5 is set above a focal plate 4, and an eyepiece 6 and a photometric lens 7 are provided at the right and above the prism 5 respectively. A photometric element SP is set at the right side of the lens 7, and the right face and the lower face of the prims 5 serve as a photometric mask 9 and a viewfield mask 10 respectively. An electro-optical light shielding member 11 is provided at the lower face side of the mask 10 and has contains a driving circuit 12. A 45 deg. reflector 13 set at the lower part of the plate 4 contains a half mirror at its center part. Thus a part of the luminous flux Lt of an object to be photographed that passes through a shooting lens 20 enters an upper finder optical system while another part of the flux Lt enters a lower automatic focal point AF optical system via a submirror 14 respectively.
JP56206130A 1981-12-22 1981-12-22 Photometry device of camera Pending JPS58107520A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56206130A JPS58107520A (en) 1981-12-22 1981-12-22 Photometry device of camera

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP56206130A JPS58107520A (en) 1981-12-22 1981-12-22 Photometry device of camera
US06/429,521 US4465355A (en) 1981-10-09 1982-09-30 Single-lens reflex camera
DE19823237370 DE3237370A1 (en) 1981-10-09 1982-10-08 One-eyed mirror reflex camera

Publications (1)

Publication Number Publication Date
JPS58107520A true JPS58107520A (en) 1983-06-27

Family

ID=16518275

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56206130A Pending JPS58107520A (en) 1981-12-22 1981-12-22 Photometry device of camera

Country Status (1)

Country Link
JP (1) JPS58107520A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE35409E (en) * 1982-09-24 1996-12-24 Moore; Sidney D. Electrically addressable opto-electronic indicator for making dynamic evaluations of microscopic or larger subjects

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE35409E (en) * 1982-09-24 1996-12-24 Moore; Sidney D. Electrically addressable opto-electronic indicator for making dynamic evaluations of microscopic or larger subjects

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