JPS55130521A - 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
JPS55130521A
JPS55130521A JP3868879A JP3868879A JPS55130521A JP S55130521 A JPS55130521 A JP S55130521A JP 3868879 A JP3868879 A JP 3868879A JP 3868879 A JP3868879 A JP 3868879A JP S55130521 A JPS55130521 A JP S55130521A
Authority
JP
Japan
Prior art keywords
lens
lead
splitting mirror
mirror
optical
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
JP3868879A
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 JP3868879A priority Critical patent/JPS55130521A/en
Publication of JPS55130521A publication Critical patent/JPS55130521A/en
Pending legal-status Critical Current

Links

Landscapes

  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE: To impart TTL type focus detection function readily by incorporating two lead-in optical systems to one photoelectric detecting part.
CONSTITUTION: A photo splitting mirror 8 as the 1st lead-in optical system is formed ed to the inside center of a condenser lens 7 between a finder screen 3a and pentagonal roof prism 5 and an optical block 9 as the 2nd lead-in optical system means is disposed to the reflected light path of the photo splitting mirror 8. Further, a pair of photoelectric transducers 13a, 13b are disposed to the subject side head face part of the pentagonal roof prism 5 by way of a lens 12. As a result of this, part of the subject light which enters through an interchangeable type photographing lens 1, reflects on the mirror 3 and images on the finder screen 3a enters the photoelectric transducers 13a, 13b through the photo splitting mirror 8, optical block 9, prism 10 with spherical face and lens 12. The focus detection is performed from the comparison of the quantity of the received light.
COPYRIGHT: (C)1980,JPO&Japio
JP3868879A 1979-03-31 1979-03-31 Single-lens reflex camera provided with ttl type focus detector Pending JPS55130521A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3868879A JPS55130521A (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
JP3868879A JPS55130521A (en) 1979-03-31 1979-03-31 Single-lens reflex camera provided with ttl type focus detector

Publications (1)

Publication Number Publication Date
JPS55130521A true JPS55130521A (en) 1980-10-09

Family

ID=12532226

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3868879A Pending JPS55130521A (en) 1979-03-31 1979-03-31 Single-lens reflex camera provided with ttl type focus detector

Country Status (1)

Country Link
JP (1) JPS55130521A (en)

Similar Documents

Publication Publication Date Title
JPS5299820A (en) Focusing glass
JPS55155331A (en) Focus detector
JPS5732406A (en) Focus detector
JPS5570829A (en) Finder of single-lens reflex camera
JPS55130521A (en) Single-lens reflex camera provided with ttl type focus detector
JPS55111928A (en) Automatic focusing device
US4297020A (en) View finder for single-lens reflex camera
JPS547323A (en) Optical system for detecting point of focus
JPS5588041A (en) Finder of single-lens reflex camera
JPS55130520A (en) Single-lens reflex camera provided with ttl type focus detector
US4223989A (en) Focusing optical system for single-lens reflex cameras
SU622034A1 (en) Reflex camera
JPS55106438A (en) Focal plate in reflex camera
JPS54107337A (en) Focusing device of single-lens reflex camera
GB1194814A (en) Improvements in or relating to Cameras
JPS60247631A (en) Single lens reflex camera with focus detector
JPS56128923A (en) Focus detector
JPS55106427A (en) Single-lens reflex camera
JPS552232A (en) Focusing optical device for camera
JPS55108629A (en) Focus detector of camera
SU1195326A1 (en) Phtographic camera
JPS55127527A (en) Automatic focus detector
JPS55129319A (en) Optical system for focus detection of single-lens reflex camera
JPS556350A (en) Finder optical system of camera provided with automatic focus detector
JPS5548606A (en) Distance measuring device