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FR2337350A1 - Dispositif de commande photographique pour la realisation de petites ouvertures d'exposition - Google Patents

Dispositif de commande photographique pour la realisation de petites ouvertures d'exposition

Info

Publication number
FR2337350A1
FR2337350A1 FR7639564A FR7639564A FR2337350A1 FR 2337350 A1 FR2337350 A1 FR 2337350A1 FR 7639564 A FR7639564 A FR 7639564A FR 7639564 A FR7639564 A FR 7639564A FR 2337350 A1 FR2337350 A1 FR 2337350A1
Authority
FR
France
Prior art keywords
realization
openings
control device
photographic control
small exhibition
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
FR7639564A
Other languages
English (en)
Other versions
FR2337350B1 (fr
Inventor
Bruce K Johnson
George D Whiteside
Irving Lasking
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
Publication of FR2337350A1 publication Critical patent/FR2337350A1/fr
Application granted granted Critical
Publication of FR2337350B1 publication Critical patent/FR2337350B1/fr
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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters
    • G03B9/36—Sliding rigid plate
    • G03B9/40—Double plate
    • G03B9/42—Double plate with adjustable slot; with mechanism controlling relative movement of plates to form slot
    • 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)
  • Shutters For Cameras (AREA)
  • Exposure Control For Cameras (AREA)
  • Shutter-Related Mechanisms (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
FR7639564A 1976-01-02 1976-12-30 Dispositif de commande photographique pour la realisation de petites ouvertures d'exposition Granted FR2337350A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/646,286 US4058817A (en) 1976-01-02 1976-01-02 Photographic exposure apparatus for providing small apertures

Publications (2)

Publication Number Publication Date
FR2337350A1 true FR2337350A1 (fr) 1977-07-29
FR2337350B1 FR2337350B1 (fr) 1982-04-09

Family

ID=24592476

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7639564A Granted FR2337350A1 (fr) 1976-01-02 1976-12-30 Dispositif de commande photographique pour la realisation de petites ouvertures d'exposition

Country Status (6)

Country Link
US (1) US4058817A (fr)
JP (1) JPS52104127A (fr)
CA (1) CA1076870A (fr)
DE (1) DE2659624A1 (fr)
FR (1) FR2337350A1 (fr)
GB (1) GB1564940A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147418A (en) * 1977-10-11 1979-04-03 Polaroid Corporation Photographic exposure control system with independent ambient and artificial illumination control modes
US4255030A (en) * 1979-09-13 1981-03-10 Polaroid Corporation Camera with proportional fill flash quench strobe
JPS5680030A (en) * 1979-12-04 1981-07-01 Copal Co Ltd Programmed shutter interlocking to light receiving part
JPS5719930U (fr) * 1980-07-04 1982-02-02
US4297016A (en) * 1980-07-07 1981-10-27 Polaroid Corporation Scanning shutter blade arrangement with dynamic apertures for ambient and flash exposures
DE3209683A1 (de) * 1982-03-17 1983-09-22 Philips Patentverwaltung Gmbh, 2000 Hamburg Roentgenzielgeraet mit einer einrichtung zur filmnahen einblendung
EP0506037B1 (fr) * 1991-03-27 1997-05-28 Canon Kabushiki Kaisha Dispositif photographique

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896458A (en) * 1973-07-05 1975-07-22 Polaroid Corp Automatic exposure control system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023683A (en) * 1957-09-16 1962-03-06 Kobayashi Hideya Camera equipped with an exposure meter
US3006265A (en) * 1959-08-07 1961-10-31 Bell & Howell Co Exposure control with diffraction compensation
US3842423A (en) * 1973-10-17 1974-10-15 Eastman Kodak Co Exposure control apparatus
US3952312A (en) * 1974-12-20 1976-04-20 Polaroid Corporation Exposure control system for photographic apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896458A (en) * 1973-07-05 1975-07-22 Polaroid Corp Automatic exposure control system

Also Published As

Publication number Publication date
JPS52104127A (en) 1977-09-01
CA1076870A (fr) 1980-05-06
GB1564940A (en) 1980-04-16
FR2337350B1 (fr) 1982-04-09
DE2659624C2 (fr) 1987-05-21
DE2659624A1 (de) 1977-07-14
JPS5340894B2 (fr) 1978-10-30
US4058817A (en) 1977-11-15

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Legal Events

Date Code Title Description
ST Notification of lapse