DE3115320A1 - "geraet zur bildung der belichtungs-kompensationsinformation fuer eine kamera" - Google Patents

"geraet zur bildung der belichtungs-kompensationsinformation fuer eine kamera"

Info

Publication number
DE3115320A1
DE3115320A1 DE19813115320 DE3115320A DE3115320A1 DE 3115320 A1 DE3115320 A1 DE 3115320A1 DE 19813115320 DE19813115320 DE 19813115320 DE 3115320 A DE3115320 A DE 3115320A DE 3115320 A1 DE3115320 A1 DE 3115320A1
Authority
DE
Germany
Prior art keywords
circuit
output signal
value
operational amplifier
output
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.)
Granted
Application number
DE19813115320
Other languages
German (de)
English (en)
Other versions
DE3115320C2 (enExample
Inventor
Masaharu Kawasaki Kanagawa Kawamura
Masayoshi Yokohama Kanagawa Kiuchi
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 DE3115320A1 publication Critical patent/DE3115320A1/de
Application granted granted Critical
Publication of DE3115320C2 publication Critical patent/DE3115320C2/de
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
    • G03B7/085—Analogue circuits for control of 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
    • G03B7/081—Analogue circuits

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
DE19813115320 1980-04-17 1981-04-15 "geraet zur bildung der belichtungs-kompensationsinformation fuer eine kamera" Granted DE3115320A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5188380A JPS56147134A (en) 1980-04-17 1980-04-17 Photometric compensation device of single-lens reflex camera

Publications (2)

Publication Number Publication Date
DE3115320A1 true DE3115320A1 (de) 1982-02-18
DE3115320C2 DE3115320C2 (enExample) 1988-09-08

Family

ID=12899272

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813115320 Granted DE3115320A1 (de) 1980-04-17 1981-04-15 "geraet zur bildung der belichtungs-kompensationsinformation fuer eine kamera"

Country Status (3)

Country Link
US (1) US4382667A (enExample)
JP (1) JPS56147134A (enExample)
DE (1) DE3115320A1 (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4516024A (en) * 1982-08-23 1985-05-07 Rca Corporation Automatically adjustable aperture stop for optical scanning system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2856307A1 (de) * 1977-12-27 1979-07-05 Nippon Kogaku Kk Belichtungssteuerung fuer eine kamera

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS516538A (ja) * 1974-07-05 1976-01-20 Canon Kk Roshutsuseigyohoho
JPS5342025A (en) * 1976-09-29 1978-04-17 Minolta Camera Co Ltd Exposure indicator for single lens reflec camera of automatic exposure control type

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2856307A1 (de) * 1977-12-27 1979-07-05 Nippon Kogaku Kk Belichtungssteuerung fuer eine kamera

Also Published As

Publication number Publication date
JPS56147134A (en) 1981-11-14
US4382667A (en) 1983-05-10
DE3115320C2 (enExample) 1988-09-08

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition