JPS547323A - Optical system for detecting point of focus - Google Patents

Optical system for detecting point of focus

Info

Publication number
JPS547323A
JPS547323A JP7214577A JP7214577A JPS547323A JP S547323 A JPS547323 A JP S547323A JP 7214577 A JP7214577 A JP 7214577A JP 7214577 A JP7214577 A JP 7214577A JP S547323 A JPS547323 A JP S547323A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
optical system
focus
detecting point
pair
accracy
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
JP7214577A
Other versions
JPS6113566B2 (en )
Inventor
Ikuo Maeda
Original Assignee
Ricoh 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

Links

Abstract

PURPOSE: To readily bluid the optical system into a camera and increase range finding accracy by disposing a pair of photoelectric transducers in the optical equivalent positions of both images by a pair of convex lenses of the same performance installed before or behind the intended image forming plane by an objective lens.
COPYRIGHT: (C)1979,JPO&Japio
JP7214577A 1977-06-20 1977-06-20 Expired JPS6113566B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7214577A JPS6113566B2 (en) 1977-06-20 1977-06-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7214577A JPS6113566B2 (en) 1977-06-20 1977-06-20

Publications (2)

Publication Number Publication Date
JPS547323A true true JPS547323A (en) 1979-01-20
JPS6113566B2 JPS6113566B2 (en) 1986-04-14

Family

ID=13480802

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7214577A Expired JPS6113566B2 (en) 1977-06-20 1977-06-20

Country Status (1)

Country Link
JP (1) JPS6113566B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55130524A (en) * 1979-03-26 1980-10-09 Honeywell Inc Optical device using a plurality of lenslet
JPS55130506A (en) * 1979-03-26 1980-10-09 Honeywell Inc Optical device
JPS5770503A (en) * 1980-10-20 1982-05-01 Mamiya Koki Kk Automatic focusing device
JPS5821715A (en) * 1981-07-31 1983-02-08 Asahi Optical Co Ltd Light flux divider
US4474448A (en) * 1982-07-14 1984-10-02 Canon Kabushiki Kaisha Focus detection device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55130524A (en) * 1979-03-26 1980-10-09 Honeywell Inc Optical device using a plurality of lenslet
JPS55130506A (en) * 1979-03-26 1980-10-09 Honeywell Inc Optical device
JPS6333683B2 (en) * 1979-03-26 1988-07-06 Honeywell Inc
JPS6335001B2 (en) * 1979-03-26 1988-07-13 Honeywell Inc
JPS5770503A (en) * 1980-10-20 1982-05-01 Mamiya Koki Kk Automatic focusing device
JPH0321886B2 (en) * 1980-10-20 1991-03-25 Mamiya Camera
JPS5821715A (en) * 1981-07-31 1983-02-08 Asahi Optical Co Ltd Light flux divider
US4474448A (en) * 1982-07-14 1984-10-02 Canon Kabushiki Kaisha Focus detection device

Also Published As

Publication number Publication date Type
JPS6113566B2 (en) 1986-04-14 grant

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