CA991465A - Dynamically compensated exposure control system - Google Patents

Dynamically compensated exposure control system

Info

Publication number
CA991465A
CA991465A CA165,738A CA165738A CA991465A CA 991465 A CA991465 A CA 991465A CA 165738 A CA165738 A CA 165738A CA 991465 A CA991465 A CA 991465A
Authority
CA
Canada
Prior art keywords
control system
exposure control
dynamically compensated
compensated exposure
dynamically
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
CA165,738A
Other versions
CA165738S (en
Inventor
Christian C. Petersen
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 CA991465A publication Critical patent/CA991465A/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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/58—Means for varying duration of "open" period of shutter
    • 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
CA165,738A 1972-04-21 1973-03-09 Dynamically compensated exposure control system Expired CA991465A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24580072A 1972-04-21 1972-04-21

Publications (1)

Publication Number Publication Date
CA991465A true CA991465A (en) 1976-06-22

Family

ID=22928131

Family Applications (1)

Application Number Title Priority Date Filing Date
CA165,738A Expired CA991465A (en) 1972-04-21 1973-03-09 Dynamically compensated exposure control system

Country Status (5)

Country Link
JP (1) JPS5340448B2 (en)
CA (1) CA991465A (en)
DE (1) DE2318510C2 (en)
FR (1) FR2181312A5 (en)
GB (1) GB1417044A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5117159B2 (en) * 1972-01-25 1976-05-31
JPS50139729A (en) * 1974-04-24 1975-11-08
US3942183A (en) * 1974-07-02 1976-03-02 Polaroid Corporation Camera with pivoting blades
US3995295A (en) * 1975-08-28 1976-11-30 Polaroid Corporation Electro-mechanical shutter system having mechanical latch
JPS5449128A (en) * 1977-09-27 1979-04-18 Seiko Koki Kk Electromagnetic drive apparatus of shutter for camera
JPS5796425U (en) * 1980-12-04 1982-06-14

Family Cites Families (2)

* 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
JPS4817321B1 (en) * 1970-09-25 1973-05-29

Also Published As

Publication number Publication date
JPS5340448B2 (en) 1978-10-27
JPS4922120A (en) 1974-02-27
GB1417044A (en) 1975-12-10
DE2318510C2 (en) 1983-02-17
FR2181312A5 (en) 1973-11-30
DE2318510A1 (en) 1973-10-31

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