JPS55124124A - Photo detecting optical system of reflection photometry system camera - Google Patents

Photo detecting optical system of reflection photometry system camera

Info

Publication number
JPS55124124A
JPS55124124A JP3005579A JP3005579A JPS55124124A JP S55124124 A JPS55124124 A JP S55124124A JP 3005579 A JP3005579 A JP 3005579A JP 3005579 A JP3005579 A JP 3005579A JP S55124124 A JPS55124124 A JP S55124124A
Authority
JP
Japan
Prior art keywords
light
reflected
film plane
photo
photo detecting
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
JP3005579A
Other languages
Japanese (ja)
Inventor
Kazuyuki Nemoto
Yoshihiro Matsumoto
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 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 Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP3005579A priority Critical patent/JPS55124124A/en
Publication of JPS55124124A publication Critical patent/JPS55124124A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To surely perform correct photometry by specifying the photo detecting route of photo detectors.
CONSTITUTION: The photo detecting optical system 13 built in the lower part of the camera body 10 is constituted by the photo detector 16 disposed by way of an IC substrate 15 on a support substrate 14, a shield plate 17 having an opening 17a, and a reflecting mirror 18 inclined at the specified angle with respect to film plane 12. As a result of this, while the photo detector 16 receives the light b reflected by the reflecting mirror 18 and the light d incident directly to the opening 17a out of the reflected lights from the upper part of the film plane 12 through two routes, it receives only the light c reflected by the reflecting mirror 18 out of the reflected light from the lower part of the film plane 12 through one route. Hence the weakness of the intensity of the incident light from the upper part of the film plane 12 is compensated and the uneven intensities of the incident light from the upper part and the incident light from the lower part are eliminated and the correct photometry is made possible.
COPYRIGHT: (C)1980,JPO&Japio
JP3005579A 1979-03-16 1979-03-16 Photo detecting optical system of reflection photometry system camera Pending JPS55124124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3005579A JPS55124124A (en) 1979-03-16 1979-03-16 Photo detecting optical system of reflection photometry system camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3005579A JPS55124124A (en) 1979-03-16 1979-03-16 Photo detecting optical system of reflection photometry system camera

Publications (1)

Publication Number Publication Date
JPS55124124A true JPS55124124A (en) 1980-09-25

Family

ID=12293131

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3005579A Pending JPS55124124A (en) 1979-03-16 1979-03-16 Photo detecting optical system of reflection photometry system camera

Country Status (1)

Country Link
JP (1) JPS55124124A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57118225A (en) * 1981-01-14 1982-07-23 Olympus Optical Co Ltd Reflection photometric device of camera
US4440479A (en) * 1981-01-14 1984-04-03 Olympus Optical Co. Ltd. Reflex photometric assembly for camera

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57118225A (en) * 1981-01-14 1982-07-23 Olympus Optical Co Ltd Reflection photometric device of camera
US4440479A (en) * 1981-01-14 1984-04-03 Olympus Optical Co. Ltd. Reflex photometric assembly for camera

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