GB1335432A - Electronic exposure determining circuit and an electric shutter control system incorporating the exposure determining circuit - Google Patents

Electronic exposure determining circuit and an electric shutter control system incorporating the exposure determining circuit

Info

Publication number
GB1335432A
GB1335432A GB2048271A GB2048271A GB1335432A GB 1335432 A GB1335432 A GB 1335432A GB 2048271 A GB2048271 A GB 2048271A GB 2048271 A GB2048271 A GB 2048271A GB 1335432 A GB1335432 A GB 1335432A
Authority
GB
United Kingdom
Prior art keywords
determining circuit
amplifier
circuit
exposure determining
capacitor
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
GB2048271A
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Publication of GB1335432A publication Critical patent/GB1335432A/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
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B6/00—Internal feedback arrangements for obtaining particular characteristics, e.g. proportional, integral or differential
    • G05B6/02—Internal feedback arrangements for obtaining particular characteristics, e.g. proportional, integral or differential electric

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Exposure Control For Cameras (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
GB2048271A 1970-01-23 1971-04-19 Electronic exposure determining circuit and an electric shutter control system incorporating the exposure determining circuit Expired GB1335432A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45006146A JPS4817087B1 (enrdf_load_stackoverflow) 1970-01-23 1970-01-23

Publications (1)

Publication Number Publication Date
GB1335432A true GB1335432A (en) 1973-10-31

Family

ID=11630365

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2048271A Expired GB1335432A (en) 1970-01-23 1971-04-19 Electronic exposure determining circuit and an electric shutter control system incorporating the exposure determining circuit

Country Status (2)

Country Link
JP (1) JPS4817087B1 (enrdf_load_stackoverflow)
GB (1) GB1335432A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111616726A (zh) * 2020-05-22 2020-09-04 上海昊博影像科技有限公司 平板探测器全视野自动曝光检测方法以及图像采集装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111616726A (zh) * 2020-05-22 2020-09-04 上海昊博影像科技有限公司 平板探测器全视野自动曝光检测方法以及图像采集装置

Also Published As

Publication number Publication date
JPS4817087B1 (enrdf_load_stackoverflow) 1973-05-26

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years