FR2157474A5 - - Google Patents

Info

Publication number
FR2157474A5
FR2157474A5 FR7236329A FR7236329A FR2157474A5 FR 2157474 A5 FR2157474 A5 FR 2157474A5 FR 7236329 A FR7236329 A FR 7236329A FR 7236329 A FR7236329 A FR 7236329A FR 2157474 A5 FR2157474 A5 FR 2157474A5
Authority
FR
France
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
FR7236329A
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Application granted granted Critical
Publication of FR2157474A5 publication Critical patent/FR2157474A5/fr
Expired 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
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/081—Analogue circuits
    • G03B7/083—Analogue circuits for control of exposure time

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Exposure Control For Cameras (AREA)
FR7236329A 1971-10-14 1972-10-13 Expired FR2157474A5 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46081143A JPS48104529A (fr) 1971-10-14 1971-10-14

Publications (1)

Publication Number Publication Date
FR2157474A5 true FR2157474A5 (fr) 1973-06-01

Family

ID=13738174

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7236329A Expired FR2157474A5 (fr) 1971-10-14 1972-10-13

Country Status (5)

Country Link
US (1) US3883882A (fr)
JP (1) JPS48104529A (fr)
DE (1) DE2250379C3 (fr)
FR (1) FR2157474A5 (fr)
GB (1) GB1385075A (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037234A (en) * 1973-04-28 1977-07-19 Canon Kabushiki Kaisha Exposure control system stabilized against temperature variation
JPS5321950Y2 (fr) * 1973-05-15 1978-06-08
JPS5853294B2 (ja) * 1974-08-21 1983-11-28 ミノルタ株式会社 ソクコウカイロ
US4099188A (en) * 1974-10-09 1978-07-04 Asahi Kogaku Kogyo Kabushiki Kaisha Automatic exposure control device for single lens reflex camera
JPS5177286A (en) * 1974-12-26 1976-07-05 Asahi Optical Co Ltd Roshutsuseigyosochi
US9490282B2 (en) 2015-03-19 2016-11-08 Omnivision Technologies, Inc. Photosensitive capacitor pixel for image sensor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3641890A (en) * 1967-10-31 1972-02-15 Nippon Kogaku Kk Exposure-measuring device for cameras provided with electronic shutter
JPS5025336B1 (fr) * 1967-11-28 1975-08-22
US3625124A (en) * 1968-07-03 1971-12-07 Asahi Optical Co Ltd Shutter timing mechanism using inverse feedback circuit
JPS4837089B1 (fr) * 1969-04-17 1973-11-09
US3690230A (en) * 1969-12-25 1972-09-12 Asahi Optical Co Ltd Electronic circuits for automatic camera controls
GB1339622A (en) * 1970-06-16 1973-12-05 Asahi Optical Co Ltd Electric shutter control circuit for a single-lens reflex camera

Also Published As

Publication number Publication date
JPS48104529A (fr) 1973-12-27
DE2250379B2 (de) 1973-12-13
DE2250379C3 (de) 1974-07-11
US3883882A (en) 1975-05-13
DE2250379A1 (de) 1973-04-26
GB1385075A (en) 1975-02-26

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Legal Events

Date Code Title Description
ST Notification of lapse