JPS5425849A - Focus detector - Google Patents

Focus detector

Info

Publication number
JPS5425849A
JPS5425849A JP9118177A JP9118177A JPS5425849A JP S5425849 A JPS5425849 A JP S5425849A JP 9118177 A JP9118177 A JP 9118177A JP 9118177 A JP9118177 A JP 9118177A JP S5425849 A JPS5425849 A JP S5425849A
Authority
JP
Japan
Prior art keywords
vertical angle
focus detector
eherein
eyepiece
grating
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
JP9118177A
Other languages
Japanese (ja)
Inventor
Toshihiro Kondo
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP9118177A priority Critical patent/JPS5425849A/en
Publication of JPS5425849A publication Critical patent/JPS5425849A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To detect focus with good accuracy even if the subject is a continuous pattern or grating by providing a single conical prism having a vertical angle of the range eherein no full reflection occurs between an objective lens and an eyepiece in such a manner that the vertical angle thereof positions on the optical axis.
COPYRIGHT: (C)1979,JPO&Japio
JP9118177A 1977-07-29 1977-07-29 Focus detector Pending JPS5425849A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9118177A JPS5425849A (en) 1977-07-29 1977-07-29 Focus detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9118177A JPS5425849A (en) 1977-07-29 1977-07-29 Focus detector

Publications (1)

Publication Number Publication Date
JPS5425849A true JPS5425849A (en) 1979-02-27

Family

ID=14019274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9118177A Pending JPS5425849A (en) 1977-07-29 1977-07-29 Focus detector

Country Status (1)

Country Link
JP (1) JPS5425849A (en)

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