DE3443571C2 - - Google Patents

Info

Publication number
DE3443571C2
DE3443571C2 DE3443571A DE3443571A DE3443571C2 DE 3443571 C2 DE3443571 C2 DE 3443571C2 DE 3443571 A DE3443571 A DE 3443571A DE 3443571 A DE3443571 A DE 3443571A DE 3443571 C2 DE3443571 C2 DE 3443571C2
Authority
DE
Germany
Prior art keywords
circuit
aperture value
output
aperture
inputs
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 - Lifetime
Application number
DE3443571A
Other languages
German (de)
English (en)
Other versions
DE3443571A1 (de
Inventor
Eiichi Tano
Takeo Kobayashi
Kiyoshi Tokio/Tokyo Jp Negishi
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
Publication of DE3443571A1 publication Critical patent/DE3443571A1/de
Application granted granted Critical
Publication of DE3443571C2 publication Critical patent/DE3443571C2/de
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
    • 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
    • G03B7/091—Digital circuits
    • G03B7/093—Digital circuits for control of exposure time
    • 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
    • G03B7/20—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with change of lens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Diaphragms For Cameras (AREA)
DE19843443571 1983-11-29 1984-11-29 Manuelle blendenoeffnungswerteinstellschaltung fuer eine kamera Granted DE3443571A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58224700A JPS60117224A (ja) 1983-11-29 1983-11-29 カメラの絞り値手動設定回路

Publications (2)

Publication Number Publication Date
DE3443571A1 DE3443571A1 (de) 1985-06-05
DE3443571C2 true DE3443571C2 (en, 2012) 1991-06-27

Family

ID=16817869

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843443571 Granted DE3443571A1 (de) 1983-11-29 1984-11-29 Manuelle blendenoeffnungswerteinstellschaltung fuer eine kamera

Country Status (4)

Country Link
US (1) US4558940A (en, 2012)
JP (1) JPS60117224A (en, 2012)
DE (1) DE3443571A1 (en, 2012)
GB (1) GB2150701B (en, 2012)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4212620A1 (de) * 1991-04-15 1992-10-22 Asahi Optical Co Ltd Belichtungssteuerung fuer eine kamera

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH077172B2 (ja) * 1985-01-14 1995-01-30 ミノルタ株式会社 絞り設定装置
JPH0727450Y2 (ja) * 1988-10-04 1995-06-21 旭光学工業株式会社 ズームレンズカメラの開放ｆ値検出装置
US5069652A (en) * 1990-10-29 1991-12-03 Hazenbroek Jacobus E Keel bone cutter
JPH08220587A (ja) * 1995-02-13 1996-08-30 Nikon Corp 電子カメラ
JP3417781B2 (ja) * 1997-01-30 2003-06-16 ペンタックス株式会社 一眼レフレックスカメラ
JP4872586B2 (ja) * 2005-11-10 2012-02-08 日産自動車株式会社 車体前部構造および連結部材
CN102947169A (zh) 2010-06-24 2013-02-27 本田技研工业株式会社 车身前部构造

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5241638B1 (en, 2012) * 1969-03-28 1977-10-19
JPS5028831A (en, 2012) * 1973-07-16 1975-03-24
JPS51143327A (en) * 1975-06-04 1976-12-09 Canon Inc Photographing data indication system
US4191458A (en) * 1975-09-11 1980-03-04 Canon Kabushiki Kaisha Photographic information setting display circuit
JPS5256532A (en) * 1975-11-04 1977-05-10 Canon Inc Iris information setting device for camera
JPS5258529A (en) * 1975-11-08 1977-05-14 Canon Inc Camera system
JPS52119228A (en) * 1976-03-30 1977-10-06 Canon Inc Means for setting photograph information
JPS546530A (en) * 1977-06-16 1979-01-18 Asahi Optical Co Ltd Lens bodyytube having iris information transmitting mechanism
US4286849A (en) * 1978-02-09 1981-09-01 Canon Kabushiki Kaisha Digital camera
JPS54138431A (en) * 1978-04-18 1979-10-26 Minolta Camera Co Ltd Program shutter device
JPS5799623A (en) * 1980-12-11 1982-06-21 Minolta Camera Co Ltd Camera having optionally produced and set program line
US4437752A (en) * 1981-11-28 1984-03-20 Canon Kabushiki Kaisha Safety device for camera and accessory
JPS58136019A (ja) * 1982-02-05 1983-08-12 Minolta Camera Co Ltd カメラの撮影情報設定装置
US4483601A (en) * 1982-02-05 1984-11-20 Minolta Camera Kabushiki Kaisha Camera with photographic data setting device
JPS5875121A (ja) * 1982-09-10 1983-05-06 Canon Inc カメラの情報設定装置
JPS5875124A (ja) * 1982-09-10 1983-05-06 Canon Inc カメラの情報設定装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4212620A1 (de) * 1991-04-15 1992-10-22 Asahi Optical Co Ltd Belichtungssteuerung fuer eine kamera

Also Published As

Publication number Publication date
DE3443571A1 (de) 1985-06-05
US4558940A (en) 1985-12-17
GB8429581D0 (en) 1985-01-03
GB2150701A (en) 1985-07-03
JPS60117224A (ja) 1985-06-24
GB2150701B (en) 1987-01-07

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8125 Change of the main classification

Ipc: G03B 7/091

D2 Grant after examination
8363 Opposition against the patent
8366 Restricted maintained after opposition proceedings
8305 Restricted maintenance of patent after opposition
D4 Patent maintained restricted
8327 Change in the person/name/address of the patent owner

Owner name: PENTAX CORP., TOKIO/TOKYO, JP