JPS6332171B2 - - Google Patents

Info

Publication number
JPS6332171B2
JPS6332171B2 JP55079256A JP7925680A JPS6332171B2 JP S6332171 B2 JPS6332171 B2 JP S6332171B2 JP 55079256 A JP55079256 A JP 55079256A JP 7925680 A JP7925680 A JP 7925680A JP S6332171 B2 JPS6332171 B2 JP S6332171B2
Authority
JP
Japan
Prior art keywords
circuit
time constant
signal
output
aperture value
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.)
Expired
Application number
JP55079256A
Other languages
English (en)
Japanese (ja)
Other versions
JPS575016A (en
Inventor
Takashi Kawabata
Takao Kinoshita
Nobuhiko Shinoda
Shinji Sakai
Mitsuya Hosoe
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 JP7925680A priority Critical patent/JPS575016A/ja
Publication of JPS575016A publication Critical patent/JPS575016A/ja
Publication of JPS6332171B2 publication Critical patent/JPS6332171B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10—Power-operated focusing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Focusing (AREA)
  • Diaphragms For Cameras (AREA)
  • Automatic Focus Adjustment (AREA)
JP7925680A 1980-06-12 1980-06-12 Image definition detector Granted JPS575016A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7925680A JPS575016A (en) 1980-06-12 1980-06-12 Image definition detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7925680A JPS575016A (en) 1980-06-12 1980-06-12 Image definition detector

Publications (2)

Publication Number Publication Date
JPS575016A JPS575016A (en) 1982-01-11
JPS6332171B2 true JPS6332171B2 (zh) 1988-06-28

Family

ID=13684765

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7925680A Granted JPS575016A (en) 1980-06-12 1980-06-12 Image definition detector

Country Status (1)

Country Link
JP (1) JPS575016A (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1096848A (ja) * 1996-09-20 1998-04-14 Olympus Optical Co Ltd 自動焦点検出装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50117419A (zh) * 1974-02-08 1975-09-13
JPS5126030A (ja) * 1974-08-28 1976-03-03 Minolta Camera Kk Goshotenkenshutsusochi

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50117419A (zh) * 1974-02-08 1975-09-13
JPS5126030A (ja) * 1974-08-28 1976-03-03 Minolta Camera Kk Goshotenkenshutsusochi

Also Published As

Publication number Publication date
JPS575016A (en) 1982-01-11

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