JPS54626A - Focus detecting plate using diffraction grating - Google Patents

Focus detecting plate using diffraction grating

Info

Publication number
JPS54626A
JPS54626A JP6461877A JP6461877A JPS54626A JP S54626 A JPS54626 A JP S54626A JP 6461877 A JP6461877 A JP 6461877A JP 6461877 A JP6461877 A JP 6461877A JP S54626 A JPS54626 A JP S54626A
Authority
JP
Japan
Prior art keywords
diffraction grating
focus detecting
detecting plate
plate
focus
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.)
Granted
Application number
JP6461877A
Other languages
Japanese (ja)
Other versions
JPS6332174B2 (en
Inventor
Norio Shiotake
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.)
Nippon Chemical Industrial Co Ltd
Original Assignee
Nippon Chemical Industrial 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 Nippon Chemical Industrial Co Ltd filed Critical Nippon Chemical Industrial Co Ltd
Priority to JP6461877A priority Critical patent/JPS54626A/en
Publication of JPS54626A publication Critical patent/JPS54626A/en
Publication of JPS6332174B2 publication Critical patent/JPS6332174B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Viewfinders (AREA)
JP6461877A 1977-06-03 1977-06-03 Focus detecting plate using diffraction grating Granted JPS54626A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6461877A JPS54626A (en) 1977-06-03 1977-06-03 Focus detecting plate using diffraction grating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6461877A JPS54626A (en) 1977-06-03 1977-06-03 Focus detecting plate using diffraction grating

Publications (2)

Publication Number Publication Date
JPS54626A true JPS54626A (en) 1979-01-06
JPS6332174B2 JPS6332174B2 (en) 1988-06-28

Family

ID=13263418

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6461877A Granted JPS54626A (en) 1977-06-03 1977-06-03 Focus detecting plate using diffraction grating

Country Status (1)

Country Link
JP (1) JPS54626A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4620781A (en) * 1982-10-12 1986-11-04 Canon Kabushiki Kaisha Image processing apparatus for detecting size of the original
WO2020170707A1 (en) * 2019-02-21 2020-08-27 株式会社小糸製作所 Optical element and image display device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4620781A (en) * 1982-10-12 1986-11-04 Canon Kabushiki Kaisha Image processing apparatus for detecting size of the original
WO2020170707A1 (en) * 2019-02-21 2020-08-27 株式会社小糸製作所 Optical element and image display device

Also Published As

Publication number Publication date
JPS6332174B2 (en) 1988-06-28

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