USB492774I5 - - Google Patents

Info

Publication number
USB492774I5
USB492774I5 US49277474A USB492774I5 US B492774 I5 USB492774 I5 US B492774I5 US 49277474 A US49277474 A US 49277474A US B492774 I5 USB492774 I5 US B492774I5
Authority
US
United States
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.)
Pending
Application number
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 filed Critical
Priority to US05/492,774 priority Critical patent/US4001843A/en
Publication of USB492774I5 publication Critical patent/USB492774I5/en
Application granted granted Critical
Publication of US4001843A publication Critical patent/US4001843A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • G03B7/087—Analogue circuits for control of both exposure time and 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
    • G03B7/089—Analogue circuits for storage of exposure value in mirror reflex cameras

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
US05/492,774 1973-12-13 1974-07-29 Photographic control system with evaluation control Expired - Lifetime US4001843A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/492,774 US4001843A (en) 1973-12-13 1974-07-29 Photographic control system with evaluation control

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42455673A 1973-12-13 1973-12-13
US05/492,774 US4001843A (en) 1973-12-13 1974-07-29 Photographic control system with evaluation control

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US42455673A Continuation-In-Part 1973-12-13 1973-12-13

Publications (2)

Publication Number Publication Date
USB492774I5 true USB492774I5 (en) 1976-03-09
US4001843A US4001843A (en) 1977-01-04

Family

ID=27026375

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/492,774 Expired - Lifetime US4001843A (en) 1973-12-13 1974-07-29 Photographic control system with evaluation control

Country Status (1)

Country Link
US (1) US4001843A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53131834A (en) * 1977-04-21 1978-11-17 Minolta Camera Co Ltd Shutter release device for small camera
JPS5922214B2 (en) * 1978-09-14 1984-05-25 キヤノン株式会社 Malfunction prevention circuit for cameras
US4251146A (en) * 1979-01-29 1981-02-17 Polaroid Corporation Photographic apparatus for providing a signal visible in a camera viewfinder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3744385A (en) * 1971-12-29 1973-07-10 Polaroid Corp Control system for photographic apparatus
US3842587A (en) * 1972-08-19 1974-10-22 Rollei Werke Franke Heidecke Electrically controlled photographic camera

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3744385A (en) * 1971-12-29 1973-07-10 Polaroid Corp Control system for photographic apparatus
US3842587A (en) * 1972-08-19 1974-10-22 Rollei Werke Franke Heidecke Electrically controlled photographic camera

Also Published As

Publication number Publication date
US4001843A (en) 1977-01-04

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