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CA1019611A - Exposure control system for photographic apparatus - Google Patents

Exposure control system for photographic apparatus

Info

Publication number
CA1019611A
CA1019611A CA200,376A CA200376A CA1019611A CA 1019611 A CA1019611 A CA 1019611A CA 200376 A CA200376 A CA 200376A CA 1019611 A CA1019611 A CA 1019611A
Authority
CA
Canada
Prior art keywords
control system
exposure control
photographic apparatus
photographic
exposure
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
CA200,376A
Inventor
Richard C. Kee
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.)
Polaroid Corp
Original Assignee
Polaroid Corp
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 Polaroid Corp filed Critical Polaroid Corp
Application granted granted Critical
Publication of CA1019611A publication Critical patent/CA1019611A/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
    • G03B7/091—Digital circuits
    • G03B7/095—Digital circuits for control of aperture

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Shutters For Cameras (AREA)
  • Exposure Control For Cameras (AREA)
  • Control Of Stepping Motors (AREA)
  • Stroboscope Apparatuses (AREA)
CA200,376A 1973-05-22 1974-05-21 Exposure control system for photographic apparatus Expired CA1019611A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US36266473A 1973-05-22 1973-05-22

Publications (1)

Publication Number Publication Date
CA1019611A true CA1019611A (en) 1977-10-25

Family

ID=23427023

Family Applications (1)

Application Number Title Priority Date Filing Date
CA200,376A Expired CA1019611A (en) 1973-05-22 1974-05-21 Exposure control system for photographic apparatus

Country Status (8)

Country Link
JP (1) JPS571810B2 (en)
CA (1) CA1019611A (en)
DD (1) DD115230A5 (en)
DE (1) DE2424030C2 (en)
FR (1) FR2231030B1 (en)
GB (1) GB1474038A (en)
IT (1) IT1003725B (en)
NL (1) NL7406583A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5747782Y2 (en) * 1978-03-30 1982-10-20
JPS56101131A (en) * 1980-01-17 1981-08-13 Copal Co Ltd Driving circuit of electromagnetic shutter for single-lens reflex camera
JPS56134020U (en) * 1980-12-26 1981-10-12
JPS58149026A (en) * 1982-03-01 1983-09-05 Copal Co Ltd Control circuit of electromagnetically driven program shutter
JPH0625837B2 (en) * 1984-05-09 1994-04-06 株式会社精工舎 Shutter for camera
JPS63188678U (en) * 1987-05-26 1988-12-02
JPS63312142A (en) * 1987-06-15 1988-12-20 Sumitomo Bakelite Co Ltd Decorative sheet of thermosetting resin
JPH02106418U (en) * 1989-02-04 1990-08-23
ES2768401T3 (en) * 2012-05-29 2020-06-22 Siemens Healthcare Diagnostics Inc Shutter assembly for a luminescence-based sample analyzer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3641889A (en) * 1970-09-02 1972-02-15 Polaroid Corp Exposure control system

Also Published As

Publication number Publication date
FR2231030A1 (en) 1974-12-20
IT1003725B (en) 1976-06-10
DD115230A5 (en) 1975-09-12
GB1474038A (en) 1977-05-18
DE2424030C2 (en) 1984-08-16
JPS5011432A (en) 1975-02-05
AU6882574A (en) 1975-11-13
FR2231030B1 (en) 1978-12-01
JPS571810B2 (en) 1982-01-13
NL7406583A (en) 1974-11-26
DE2424030A1 (en) 1974-12-12

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