JPH0572529B2 - - Google Patents

Info

Publication number
JPH0572529B2
JPH0572529B2 JP59141791A JP14179184A JPH0572529B2 JP H0572529 B2 JPH0572529 B2 JP H0572529B2 JP 59141791 A JP59141791 A JP 59141791A JP 14179184 A JP14179184 A JP 14179184A JP H0572529 B2 JPH0572529 B2 JP H0572529B2
Authority
JP
Japan
Prior art keywords
capacitor
voltage
light
amount
transistor
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
JP59141791A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6120829A (ja
Inventor
Toshuki Kumakura
Hiroyuki Kataoka
Koichi Oomori
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
Priority to JP59141791A priority Critical patent/JPS6120829A/ja
Priority to DE19853524375 priority patent/DE3524375A1/de
Publication of JPS6120829A publication Critical patent/JPS6120829A/ja
Priority to US07/107,879 priority patent/US4808811A/en
Publication of JPH0572529B2 publication Critical patent/JPH0572529B2/ja
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
    • G03B7/081—Analogue circuits
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
JP59141791A 1984-07-09 1984-07-09 光積分回路 Granted JPS6120829A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP59141791A JPS6120829A (ja) 1984-07-09 1984-07-09 光積分回路
DE19853524375 DE3524375A1 (de) 1984-07-09 1985-07-08 Lichtmessschaltung
US07/107,879 US4808811A (en) 1984-07-09 1987-10-09 Light integrating circuit for use in a light measuring device which is accurate for both low and high light values

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59141791A JPS6120829A (ja) 1984-07-09 1984-07-09 光積分回路

Publications (2)

Publication Number Publication Date
JPS6120829A JPS6120829A (ja) 1986-01-29
JPH0572529B2 true JPH0572529B2 (enrdf_load_stackoverflow) 1993-10-12

Family

ID=15300230

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59141791A Granted JPS6120829A (ja) 1984-07-09 1984-07-09 光積分回路

Country Status (1)

Country Link
JP (1) JPS6120829A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6120829A (ja) 1986-01-29

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term