DE4120450A1 - Kameraverschluss - Google Patents

Kameraverschluss

Info

Publication number
DE4120450A1
DE4120450A1 DE4120450A DE4120450A DE4120450A1 DE 4120450 A1 DE4120450 A1 DE 4120450A1 DE 4120450 A DE4120450 A DE 4120450A DE 4120450 A DE4120450 A DE 4120450A DE 4120450 A1 DE4120450 A1 DE 4120450A1
Authority
DE
Germany
Prior art keywords
light
motor
shutter
signal
edge
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.)
Withdrawn
Application number
DE4120450A
Other languages
German (de)
English (en)
Inventor
Shigeru Tagami
Kanji Ito
Kazuo Akimoto
Katsuhiko Matsushita
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.)
Seiko Precision Inc
Original Assignee
Seikosha 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 Seikosha KK filed Critical Seikosha KK
Publication of DE4120450A1 publication Critical patent/DE4120450A1/de
Withdrawn legal-status Critical Current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
    • G03B7/26—Power supplies; Circuitry or arrangement to switch on the power source; Circuitry to check the power source voltage
    • 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
    • G03B7/097—Digital circuits for control of both exposure time and aperture
    • 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
    • G03B7/10—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 a servo-motor providing energy to move the setting member
    • 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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters
    • G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
    • G03B9/14—Two separate members moving in opposite directions
    • 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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/58—Means for varying duration of "open" period of shutter
    • 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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/58—Means for varying duration of "open" period of shutter
    • G03B9/62—Means for varying duration of "open" period of shutter by varying interval of time between end of opening movement and beginning of closing movement

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Shutters For Cameras (AREA)
  • Exposure Control For Cameras (AREA)
DE4120450A 1990-06-25 1991-06-20 Kameraverschluss Withdrawn DE4120450A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990067123U JP2517472Y2 (ja) 1990-06-25 1990-06-25 カメラ用シャッタ

Publications (1)

Publication Number Publication Date
DE4120450A1 true DE4120450A1 (de) 1992-01-09

Family

ID=13335813

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4120450A Withdrawn DE4120450A1 (de) 1990-06-25 1991-06-20 Kameraverschluss

Country Status (4)

Country Link
US (1) US5181064A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JP2517472Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE4120450A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2246641B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07152063A (ja) * 1993-11-29 1995-06-16 Nikon Corp カメラ
GB2309532B (en) * 1996-01-26 2000-08-30 Asahi Optical Co Ltd Exposure controlling device for camera
US5907725A (en) * 1996-01-26 1999-05-25 Asahi Kogaku Kogyo Kabushiki Kaisha Electronically controlled camera
US5790905A (en) * 1996-01-26 1998-08-04 Asahi Kogaku Kogyo Kabushiki Kaisha Exposure controlling device for camera

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4763155A (en) * 1986-01-13 1988-08-09 Seikosha Co., Ltd. Shutter control device for camera

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3950765A (en) * 1973-07-17 1976-04-13 Minolta Camera Kabushiki Kaisha Exposure control devices for photographic cameras
JPS54116223A (en) * 1978-03-01 1979-09-10 Minolta Camera Co Ltd Exposure time control apparatus
US4325614A (en) * 1980-12-16 1982-04-20 Polaroid Corporation Exposure control system with shutter operation controlled by a microcomputer
US4354748A (en) * 1981-06-22 1982-10-19 Polaroid Corporation Photographic exposure system with computer controlled strobe unit
US4751543A (en) * 1983-12-01 1988-06-14 Canon Kabushiki Kaisha Control signal generator for camera
JPH0789190B2 (ja) * 1986-02-03 1995-09-27 キヤノン株式会社 自動露出制御装置
JP2529345B2 (ja) * 1988-04-01 1996-08-28 富士写真フイルム株式会社 プログラムシャッタ駆動装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4763155A (en) * 1986-01-13 1988-08-09 Seikosha Co., Ltd. Shutter control device for camera

Also Published As

Publication number Publication date
GB2246641A (en) 1992-02-05
GB2246641B (en) 1994-03-23
US5181064A (en) 1993-01-19
GB9113597D0 (en) 1991-08-14
JP2517472Y2 (ja) 1996-11-20
JPH0427430U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-03-04

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Legal Events

Date Code Title Description
8128 New person/name/address of the agent

Representative=s name: HOFFMANN, E., DIPL.-ING., PAT.-ANW., 82166 GRAEFEL

8110 Request for examination paragraph 44
8125 Change of the main classification

Ipc: G03B 9/08

8127 New person/name/address of the applicant

Owner name: SEIKO PRECISION INC., TOKIO/TOKYO, JP

8139 Disposal/non-payment of the annual fee