JPS59191020A - Automatic focusing camera - Google Patents

Automatic focusing camera

Info

Publication number
JPS59191020A
JPS59191020A JP6452283A JP6452283A JPS59191020A JP S59191020 A JPS59191020 A JP S59191020A JP 6452283 A JP6452283 A JP 6452283A JP 6452283 A JP6452283 A JP 6452283A JP S59191020 A JPS59191020 A JP S59191020A
Authority
JP
Japan
Prior art keywords
gate
output
high level
turned
switch
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
JP6452283A
Other languages
Japanese (ja)
Inventor
Takaki Kodaira
Takeshi Egawa
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 JP6452283A priority Critical patent/JPS59191020A/en
Publication of JPS59191020A publication Critical patent/JPS59191020A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B3/00Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10Power-operated focusing

Abstract

PURPOSE:To realize a close-up, and also to prevent an out-of-focus by inhibiting a release operation when a distance to an object to be photographed exceeds a focal range by a photographic lens set to a close-up position. CONSTITUTION:When a usual photographing of a camera is set and an object to be photographed is at the closest focusing point (d), a light is made incident to only a photodetector 108d, only an output D4 of a comparator 114 is at a high level, an output of a gate 132 is at a low level, and even if a switch 103 is turned on by depressing a release button, a gate 135 does not go to a high level, and a release signal B is not outputted. When a close-up photographic state is set and the object is at the closest focusing point (d), the light of a projecting element 105 is reflected, made incident to the photodetector 108d, and only the output D4 is at a high level, the output of the gate 132 is at a high level, and when the switch 103 is turned on, the release signal B is outputted. When the object to be photographed is positioned except the point (d), an output A0 of a gate 127 is at a low level, and even if the switch 103 is turned on by two low inputs of the gate 132, the gate 135 does not output the release signal B.
JP6452283A 1983-04-14 1983-04-14 Automatic focusing camera Pending JPS59191020A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6452283A JPS59191020A (en) 1983-04-14 1983-04-14 Automatic focusing camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6452283A JPS59191020A (en) 1983-04-14 1983-04-14 Automatic focusing camera

Publications (1)

Publication Number Publication Date
JPS59191020A true JPS59191020A (en) 1984-10-30

Family

ID=13260627

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6452283A Pending JPS59191020A (en) 1983-04-14 1983-04-14 Automatic focusing camera

Country Status (1)

Country Link
JP (1) JPS59191020A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4847646A (en) * 1985-12-17 1989-07-11 Minolta Camera Kabushiki Kaisha Camera accessory
US4868589A (en) * 1985-11-20 1989-09-19 Minolta Camera Kabushiki Kaisha Photographic camera
FR2633733A1 (en) * 1988-06-30 1990-01-05 Asahi Optical Co Ltd ELECTRONICALLY CONTROLLED PHOTOGRAPHIC APPARATUS HAVING MACRO AND NORMAL OPERATING MODES
US4924248A (en) * 1985-12-09 1990-05-08 Minolta Camera Kabushiki Kaisha Photographic camera
US4926203A (en) * 1985-10-31 1990-05-15 Minolta Camera Kabushiki Kaisha Pseudo format camera with light shielding means
US4943825A (en) * 1985-08-29 1990-07-24 Minolta Camera Kabushiki Kaisha Photographic camera
US5235374A (en) * 1988-06-30 1993-08-10 Asahi Kogaku Kogyo Kabushiki Kaisha Electronically controlled camera having macro and normal operational modes

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4943825A (en) * 1985-08-29 1990-07-24 Minolta Camera Kabushiki Kaisha Photographic camera
US4926203A (en) * 1985-10-31 1990-05-15 Minolta Camera Kabushiki Kaisha Pseudo format camera with light shielding means
US4868589A (en) * 1985-11-20 1989-09-19 Minolta Camera Kabushiki Kaisha Photographic camera
US4924248A (en) * 1985-12-09 1990-05-08 Minolta Camera Kabushiki Kaisha Photographic camera
US4928124A (en) * 1985-12-09 1990-05-22 Minolta Camera Kabushiki Kaisha Photographic camera
US4847646A (en) * 1985-12-17 1989-07-11 Minolta Camera Kabushiki Kaisha Camera accessory
FR2633733A1 (en) * 1988-06-30 1990-01-05 Asahi Optical Co Ltd ELECTRONICALLY CONTROLLED PHOTOGRAPHIC APPARATUS HAVING MACRO AND NORMAL OPERATING MODES
US5235374A (en) * 1988-06-30 1993-08-10 Asahi Kogaku Kogyo Kabushiki Kaisha Electronically controlled camera having macro and normal operational modes

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