GB2014747B - Timing circuit for a camera shutter - Google Patents

Timing circuit for a camera shutter

Info

Publication number
GB2014747B
GB2014747B GB7903602A GB7903602A GB2014747B GB 2014747 B GB2014747 B GB 2014747B GB 7903602 A GB7903602 A GB 7903602A GB 7903602 A GB7903602 A GB 7903602A GB 2014747 B GB2014747 B GB 2014747B
Authority
GB
United Kingdom
Prior art keywords
timing circuit
camera shutter
shutter
camera
timing
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
Application number
GB7903602A
Other languages
English (en)
Other versions
GB2014747A (en
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 GB2014747A publication Critical patent/GB2014747A/en
Application granted granted Critical
Publication of GB2014747B publication Critical patent/GB2014747B/en
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
    • 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)
  • Exposure Control For Cameras (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Shutters For Cameras (AREA)
GB7903602A 1978-02-17 1979-02-01 Timing circuit for a camera shutter Expired GB2014747B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1978019390U JPS54161138U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1978-02-17 1978-02-17

Publications (2)

Publication Number Publication Date
GB2014747A GB2014747A (en) 1979-08-30
GB2014747B true GB2014747B (en) 1982-06-03

Family

ID=11997947

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7903602A Expired GB2014747B (en) 1978-02-17 1979-02-01 Timing circuit for a camera shutter

Country Status (4)

Country Link
US (1) US4236801A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS54161138U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2905850C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2014747B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0658485B2 (ja) * 1985-03-11 1994-08-03 株式会社ニコン 自動調光装置の増幅率切換回路

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3761741A (en) * 1972-06-21 1973-09-25 Signetics Corp Electrically variable impedance utilizing the base emitter junctions of transistors
JPS5640811B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1972-12-29 1981-09-24
JPS5611052Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-09-12 1981-03-12
JPS5922167B2 (ja) * 1975-04-25 1984-05-24 旭光学工業 （株） 測光・演算回路
US4037237A (en) * 1975-11-12 1977-07-19 Eastman Kodak Company Exposure control apparatus
SU585489A1 (ru) * 1976-05-03 1977-12-25 Московский Ордена Трудового Красного Знамени Инженерно-Физический Институт Стабилизатор посто нного тока
US4061959A (en) * 1976-10-05 1977-12-06 Rca Corporation Voltage standard based on semiconductor junction offset potentials

Also Published As

Publication number Publication date
US4236801A (en) 1980-12-02
GB2014747A (en) 1979-08-30
DE2905850C2 (de) 1982-05-27
JPS54161138U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1979-11-10
DE2905850A1 (de) 1979-08-23

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930201