JPS55151627A - Ttl photometric device of single-lens reflex camera - Google Patents

Ttl photometric device of single-lens reflex camera

Info

Publication number
JPS55151627A
JPS55151627A JP5966079A JP5966079A JPS55151627A JP S55151627 A JPS55151627 A JP S55151627A JP 5966079 A JP5966079 A JP 5966079A JP 5966079 A JP5966079 A JP 5966079A JP S55151627 A JPS55151627 A JP S55151627A
Authority
JP
Japan
Prior art keywords
light
eyepiece
face
enters
incident light
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.)
Granted
Application number
JP5966079A
Other languages
Japanese (ja)
Other versions
JPS6210414B2 (en
Inventor
Michio Yagi
Minoru Yamada
Toru Horikoshi
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta 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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP5966079A priority Critical patent/JPS55151627A/en
Publication of JPS55151627A publication Critical patent/JPS55151627A/en
Publication of JPS6210414B2 publication Critical patent/JPS6210414B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To generate the photometric information corresponding to an eyepiece by so constituting a pentagonal prism that the entire region light of the visual field frame enters a photometric element and so constituting the same that the reflecting face performs required light attenuation.
CONSTITUTION: If the front reflecting face C and front triangle face E of a pentagonal prism 2 are made large and small, the incident light of the entire region of a visual field frame 1 through the taking lens enters not only the eyepiece 3 but photo detector 4 as well. If a reflecting film M forming a saw-tooth-form circumferential edge on the face C, etc., the reflected light enters the element 4 by becoming less as it goes further from the incident light to the lens 4, thus the effect of the incident light upon the portion of the frame 1 is eased and corrected and the proper distribution of the quantity of light is obtained. The photometric information of a correct quantity in correspondence to the eyepiece may be obtained and the photographing of correct exposure done.
COPYRIGHT: (C)1980,JPO&Japio
JP5966079A 1979-05-17 1979-05-17 Ttl photometric device of single-lens reflex camera Granted JPS55151627A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5966079A JPS55151627A (en) 1979-05-17 1979-05-17 Ttl photometric device of single-lens reflex camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5966079A JPS55151627A (en) 1979-05-17 1979-05-17 Ttl photometric device of single-lens reflex camera

Publications (2)

Publication Number Publication Date
JPS55151627A true JPS55151627A (en) 1980-11-26
JPS6210414B2 JPS6210414B2 (en) 1987-03-06

Family

ID=13119570

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5966079A Granted JPS55151627A (en) 1979-05-17 1979-05-17 Ttl photometric device of single-lens reflex camera

Country Status (1)

Country Link
JP (1) JPS55151627A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63128326A (en) * 1986-11-19 1988-05-31 Canon Inc Photometric device for camera

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63128326A (en) * 1986-11-19 1988-05-31 Canon Inc Photometric device for camera

Also Published As

Publication number Publication date
JPS6210414B2 (en) 1987-03-06

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