JPS61272725A - Range finding device for camera - Google Patents

Range finding device for camera

Info

Publication number
JPS61272725A
JPS61272725A JP11390885A JP11390885A JPS61272725A JP S61272725 A JPS61272725 A JP S61272725A JP 11390885 A JP11390885 A JP 11390885A JP 11390885 A JP11390885 A JP 11390885A JP S61272725 A JPS61272725 A JP S61272725A
Authority
JP
Japan
Prior art keywords
light
range
reflected
center part
switch
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
JP11390885A
Other languages
Japanese (ja)
Inventor
Shuichi Tamura
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 JP11390885A priority Critical patent/JPS61272725A/en
Publication of JPS61272725A publication Critical patent/JPS61272725A/en
Priority claimed from US07/113,340 external-priority patent/US4764786A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To omit a difficult operation such as prefocusing operation by forming the 1st range finding circuit for range-finding a center part, the 2nd range finding circuit for range-finding the center part and a peripheral part and a change-over switch.
CONSTITUTION: The reflected light of signal light obtained from a light emitting element 1 is made directly incident with a photodetecting element 6 through a light receiving lens 5 and the reflected light of signal light from light emitting elements 2, 3 is once reflected by mirrors 7, 8 to be reflecting members and then made incident with the photodetecting element 6. Out of three reflected rays of light, the reflected rays of light reflected by subjects located on the same range are made incident with the same position of the photodetecting element 6. If a range finding start switch 10 is turned on when the change-over switch is ON, signal rays of light are projected from the light emitting elements 1W3 and the ranges of the approximately center part and the peripheral part of a photographing screen are measured. If the switch 10 is turned on when the switch 17 is OFF, signal light is projected only from the light emitting element 1 and the range of only the center part of the photographic screen is measured.
COPYRIGHT: (C)1986,JPO&Japio
JP11390885A 1985-05-27 1985-05-27 Range finding device for camera Pending JPS61272725A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11390885A JPS61272725A (en) 1985-05-27 1985-05-27 Range finding device for camera

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11390885A JPS61272725A (en) 1985-05-27 1985-05-27 Range finding device for camera
US07/113,340 US4764786A (en) 1985-05-27 1987-10-22 Distance measuring device for camera

Publications (1)

Publication Number Publication Date
JPS61272725A true JPS61272725A (en) 1986-12-03

Family

ID=14624190

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11390885A Pending JPS61272725A (en) 1985-05-27 1985-05-27 Range finding device for camera

Country Status (1)

Country Link
JP (1) JPS61272725A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6267507A (en) * 1985-09-20 1987-03-27 Hitachi Ltd Automatic focusing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6267507A (en) * 1985-09-20 1987-03-27 Hitachi Ltd Automatic focusing device

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