JPS57125912A - Ttl type focus detector for camera - Google Patents

Ttl type focus detector for camera

Info

Publication number
JPS57125912A
JPS57125912A JP1230481A JP1230481A JPS57125912A JP S57125912 A JPS57125912 A JP S57125912A JP 1230481 A JP1230481 A JP 1230481A JP 1230481 A JP1230481 A JP 1230481A JP S57125912 A JPS57125912 A JP S57125912A
Authority
JP
Japan
Prior art keywords
gate
value
photographic lens
full aperture
exit pupil
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
JP1230481A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0241005B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
Inventor
Daiki Tsukahara
Nobuhiko Terui
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.)
Nikon Corp
Original Assignee
Nikon Corp
Nippon Kogaku KK
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 Nikon Corp, Nippon Kogaku KK filed Critical Nikon Corp
Priority to JP1230481A priority Critical patent/JPS57125912A/ja
Publication of JPS57125912A publication Critical patent/JPS57125912A/ja
Publication of JPH0241005B2 publication Critical patent/JPH0241005B2/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)
  • Automatic Focus Adjustment (AREA)
JP1230481A 1981-01-30 1981-01-30 Ttl type focus detector for camera Granted JPS57125912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1230481A JPS57125912A (en) 1981-01-30 1981-01-30 Ttl type focus detector for camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1230481A JPS57125912A (en) 1981-01-30 1981-01-30 Ttl type focus detector for camera

Publications (2)

Publication Number Publication Date
JPS57125912A true JPS57125912A (en) 1982-08-05
JPH0241005B2 JPH0241005B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1990-09-14

Family

ID=11801575

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1230481A Granted JPS57125912A (en) 1981-01-30 1981-01-30 Ttl type focus detector for camera

Country Status (1)

Country Link
JP (1) JPS57125912A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60100009A (ja) * 1983-11-05 1985-06-03 Ricoh Co Ltd 距離検出装置
US4908505A (en) * 1987-05-15 1990-03-13 Minolta Camera Kabushiki Kaisha System for detecting the focus condition of a cata-dioptric lens and interchangeable lens for use therewith
WO1991011742A1 (en) * 1990-01-30 1991-08-08 Nikon Corporation Focus detecting device
US5422701A (en) * 1990-01-30 1995-06-06 Nikon Corporation Focus detection apparatus
JP2008147821A (ja) * 2006-12-07 2008-06-26 Sony Corp 撮像素子および撮像装置
JP2009145527A (ja) * 2007-12-13 2009-07-02 Nikon Corp 撮像素子、焦点検出装置および撮像装置
EP2249192A4 (en) * 2008-02-28 2014-01-15 Sony Corp PICTURE DEVICE AND PICTURE ELEMENT

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55118019A (en) * 1979-03-05 1980-09-10 Minolta Camera Co Ltd Focusing point detector
JPS55143404A (en) * 1979-04-12 1980-11-08 Honeywell Inc Detector used for optical device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55118019A (en) * 1979-03-05 1980-09-10 Minolta Camera Co Ltd Focusing point detector
JPS55143404A (en) * 1979-04-12 1980-11-08 Honeywell Inc Detector used for optical device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60100009A (ja) * 1983-11-05 1985-06-03 Ricoh Co Ltd 距離検出装置
US4908505A (en) * 1987-05-15 1990-03-13 Minolta Camera Kabushiki Kaisha System for detecting the focus condition of a cata-dioptric lens and interchangeable lens for use therewith
WO1991011742A1 (en) * 1990-01-30 1991-08-08 Nikon Corporation Focus detecting device
US5422701A (en) * 1990-01-30 1995-06-06 Nikon Corporation Focus detection apparatus
JP2008147821A (ja) * 2006-12-07 2008-06-26 Sony Corp 撮像素子および撮像装置
JP2009145527A (ja) * 2007-12-13 2009-07-02 Nikon Corp 撮像素子、焦点検出装置および撮像装置
EP2249192A4 (en) * 2008-02-28 2014-01-15 Sony Corp PICTURE DEVICE AND PICTURE ELEMENT

Also Published As

Publication number Publication date
JPH0241005B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1990-09-14

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