FR1184023A - Exposure adjustment device for still cameras - Google Patents

Exposure adjustment device for still cameras

Info

Publication number
FR1184023A
FR1184023A FR1184023DA FR1184023A FR 1184023 A FR1184023 A FR 1184023A FR 1184023D A FR1184023D A FR 1184023DA FR 1184023 A FR1184023 A FR 1184023A
Authority
FR
France
Prior art keywords
adjustment device
still cameras
exposure adjustment
exposure
cameras
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
Other languages
French (fr)
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.)
Bell and Howell Co
Original Assignee
Bell and Howell Co
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 Bell and Howell Co filed Critical Bell and Howell Co
Application granted granted Critical
Publication of FR1184023A publication Critical patent/FR1184023A/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)
FR1184023D 1957-08-13 1957-10-07 Exposure adjustment device for still cameras Expired FR1184023A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1184023XA 1957-08-13 1957-08-13

Publications (1)

Publication Number Publication Date
FR1184023A true FR1184023A (en) 1959-07-16

Family

ID=22378355

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1184023D Expired FR1184023A (en) 1957-08-13 1957-10-07 Exposure adjustment device for still cameras

Country Status (1)

Country Link
FR (1) FR1184023A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1166613B (en) * 1958-07-14 1964-03-26 Minnesota Mining & Mfg Automatic aperture regulator for photographic devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1166613B (en) * 1958-07-14 1964-03-26 Minnesota Mining & Mfg Automatic aperture regulator for photographic devices

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