JPS55130520A - Single-lens reflex camera provided with ttl type focus detector - Google Patents

Single-lens reflex camera provided with ttl type focus detector

Info

Publication number
JPS55130520A
JPS55130520A JP3868779A JP3868779A JPS55130520A JP S55130520 A JPS55130520 A JP S55130520A JP 3868779 A JP3868779 A JP 3868779A JP 3868779 A JP3868779 A JP 3868779A JP S55130520 A JPS55130520 A JP S55130520A
Authority
JP
Japan
Prior art keywords
lens
mirror
finder screen
type focus
lens reflex
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
JP3868779A
Other languages
Japanese (ja)
Inventor
Michio Yagi
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 JP3868779A priority Critical patent/JPS55130520A/en
Publication of JPS55130520A publication Critical patent/JPS55130520A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To readily give TTL type focus detection function by specifying the construction of the optical block disposed near the finder screen face.
CONSTITUTION: A photo splitting mirror 8 is formed to the inside center of a condenser lens 7 as an optical block to be disposed between a finder screen 3a and a pentagonal prism 5. A pair of photoelectric transducers 10a, 10b are parallel disposed by way of a lens 9 to the rear side face of the condenser lens 7. As a result of this, the subject light entered through an interchangeable type photographing lens 1 is reflected by the mirror 3, images on the finder screen 3a. When it is to be observed from an eyepiece 6 through a pentagonal roof prism 5, part of the subject light enters the photoelectric transducers 10a, 10b through the photo splitting mirror 8, concave face mirror 7a and lens 9 and the focus detection is accomplished from the comparison of the quantity of the received light.
COPYRIGHT: (C)1980,JPO&Japio
JP3868779A 1979-03-31 1979-03-31 Single-lens reflex camera provided with ttl type focus detector Pending JPS55130520A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3868779A JPS55130520A (en) 1979-03-31 1979-03-31 Single-lens reflex camera provided with ttl type focus detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3868779A JPS55130520A (en) 1979-03-31 1979-03-31 Single-lens reflex camera provided with ttl type focus detector

Publications (1)

Publication Number Publication Date
JPS55130520A true JPS55130520A (en) 1980-10-09

Family

ID=12532197

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3868779A Pending JPS55130520A (en) 1979-03-31 1979-03-31 Single-lens reflex camera provided with ttl type focus detector

Country Status (1)

Country Link
JP (1) JPS55130520A (en)

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