GB1533018A - Camera exposure control system - Google Patents

Camera exposure control system

Info

Publication number
GB1533018A
GB1533018A GB20030/76A GB2003076A GB1533018A GB 1533018 A GB1533018 A GB 1533018A GB 20030/76 A GB20030/76 A GB 20030/76A GB 2003076 A GB2003076 A GB 2003076A GB 1533018 A GB1533018 A GB 1533018A
Authority
GB
United Kingdom
Prior art keywords
shutter
counter
arrangement
register
count
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
GB20030/76A
Other languages
English (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 GB1533018A publication Critical patent/GB1533018A/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
    • 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
    • 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/18—Signals indicating condition of a camera member or suitability of light

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Analogue/Digital Conversion (AREA)
  • Exposure Control For Cameras (AREA)
  • Indication In Cameras, And Counting Of Exposures (AREA)
GB20030/76A 1975-05-14 1976-05-14 Camera exposure control system Expired GB1533018A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50057722A JPS51133019A (en) 1975-05-14 1975-05-14 Electric shutter device with an interpolation type a-d converter

Publications (1)

Publication Number Publication Date
GB1533018A true GB1533018A (en) 1978-11-22

Family

ID=13063825

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20030/76A Expired GB1533018A (en) 1975-05-14 1976-05-14 Camera exposure control system

Country Status (4)

Country Link
US (1) US4080610A (enExample)
JP (1) JPS51133019A (enExample)
DE (1) DE2621622C3 (enExample)
GB (1) GB1533018A (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56121150U (enExample) * 1980-02-18 1981-09-16
JPS57161640A (en) * 1981-03-31 1982-10-05 Olympus Optical Co Ltd Inspecting device for surface
JPS57161642A (en) * 1981-03-31 1982-10-05 Olympus Optical Co Ltd Inspecting device for defect of surface
JPS61133843A (ja) * 1984-12-05 1986-06-21 Hitachi Electronics Eng Co Ltd 表面検査装置
JPH0427848A (ja) * 1990-05-23 1992-01-30 Hitachi Electron Eng Co Ltd 異物検査装置の試料走査方式

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2339110B2 (de) * 1972-08-03 1979-09-13 Minolta Camera K.K., Osaka (Japan) Vorrichtung zur Messung der Objekthelligkeit und zum Steuern der Belichtung in einer Kamera
US3995284A (en) * 1972-12-29 1976-11-30 Minolta Camera Kabushiki Kaisha Automatic exposure time control circuit
JPS5433151B2 (enExample) * 1973-04-12 1979-10-18

Also Published As

Publication number Publication date
JPS5328772B2 (enExample) 1978-08-16
DE2621622B2 (de) 1978-03-23
US4080610A (en) 1978-03-21
DE2621622A1 (de) 1976-11-25
JPS51133019A (en) 1976-11-18
DE2621622C3 (de) 1978-11-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee