CA1007505A - Camera exposure control system with extreme light conditions idicator - Google Patents

Camera exposure control system with extreme light conditions idicator

Info

Publication number
CA1007505A
CA1007505A CA168,222A CA168222A CA1007505A CA 1007505 A CA1007505 A CA 1007505A CA 168222 A CA168222 A CA 168222A CA 1007505 A CA1007505 A CA 1007505A
Authority
CA
Canada
Prior art keywords
idicator
control system
exposure control
light conditions
camera 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
CA168,222A
Other languages
English (en)
Other versions
CA168222S (fr
Inventor
Arthur C. Mueller
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 CA1007505A publication Critical patent/CA1007505A/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
    • G03B7/085—Analogue circuits for control of aperture

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
CA168,222A 1972-04-24 1973-04-09 Camera exposure control system with extreme light conditions idicator Expired CA1007505A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00246757A US3810207A (en) 1972-04-24 1972-04-24 Exposure control system

Publications (1)

Publication Number Publication Date
CA1007505A true CA1007505A (en) 1977-03-29

Family

ID=22932070

Family Applications (1)

Application Number Title Priority Date Filing Date
CA168,222A Expired CA1007505A (en) 1972-04-24 1973-04-09 Camera exposure control system with extreme light conditions idicator

Country Status (5)

Country Link
US (1) US3810207A (fr)
JP (1) JPS4955327A (fr)
CA (1) CA1007505A (fr)
DE (1) DE2319739A1 (fr)
GB (1) GB1368051A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1000547A (en) * 1972-10-11 1976-11-30 Israel Nesson Photographic exposure control mechanism
US4199237A (en) * 1977-10-27 1980-04-22 Polaroid Corporation Low scene brightness indicator for use in a photographic camera

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2297262A (en) * 1938-01-19 1942-09-29 Tonnies Hans Ferdinand Photographic apparatus
US3099198A (en) * 1958-06-27 1963-07-30 Bell & Howell Co Automatic exposure control for photographic cameras
US3116673A (en) * 1961-07-27 1964-01-07 Bogopolsky Raphael Automatic regulating device for the lighting of a photo-sensitive film during filming
US3183808A (en) * 1962-05-01 1965-05-18 Elmo Co Ltd System for automatically controlling diaphragm for photographic camera
US3292517A (en) * 1963-09-20 1966-12-20 Eastman Kodak Co Exposure control systems for cameras
JPS4510074Y1 (fr) * 1967-05-11 1970-05-09
US3651748A (en) * 1968-12-13 1972-03-28 Nihon Eigakikai Kk Camera iris blade
US3584558A (en) * 1969-01-31 1971-06-15 Eastman Kodak Co Device for extending exposure range of a camera
US3665826A (en) * 1971-01-19 1972-05-30 Keystone Division Berkey Photo Solenoid-actuated mask for automatic exposure control for cameras

Also Published As

Publication number Publication date
GB1368051A (en) 1974-09-25
DE2319739A1 (de) 1973-11-08
JPS4955327A (fr) 1974-05-29
US3810207A (en) 1974-05-07

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