FR762015A - Photometer operating by means of a photocell or other similar device - Google Patents

Photometer operating by means of a photocell or other similar device

Info

Publication number
FR762015A
FR762015A FR762015DA FR762015A FR 762015 A FR762015 A FR 762015A FR 762015D A FR762015D A FR 762015DA FR 762015 A FR762015 A FR 762015A
Authority
FR
France
Prior art keywords
photocell
similar device
photometer
operating
photometer operating
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)
Inventor
Frederik Berthus Archi Prinsen
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
Application granted granted Critical
Publication of FR762015A publication Critical patent/FR762015A/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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing
    • G01J1/4214—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for view-taking apparatus

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR762015D 1932-10-04 1933-10-03 Photometer operating by means of a photocell or other similar device Expired FR762015A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL762015X 1932-10-04

Publications (1)

Publication Number Publication Date
FR762015A true FR762015A (en) 1934-04-03

Family

ID=19827497

Family Applications (1)

Application Number Title Priority Date Filing Date
FR762015D Expired FR762015A (en) 1932-10-04 1933-10-03 Photometer operating by means of a photocell or other similar device

Country Status (1)

Country Link
FR (1) FR762015A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE916233C (en) * 1939-06-10 1954-08-05 Josef Dorn Scale arrangement in electric light meters
DE1031988B (en) * 1954-05-17 1958-06-12 Helmut Grosser Photoelectric light meter with automatic adjustment
DE1117380B (en) * 1956-10-24 1961-11-16 Braun Camera Werk Photographic camera with a galvanometer arranged in the camera housing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE916233C (en) * 1939-06-10 1954-08-05 Josef Dorn Scale arrangement in electric light meters
DE1031988B (en) * 1954-05-17 1958-06-12 Helmut Grosser Photoelectric light meter with automatic adjustment
DE1117380B (en) * 1956-10-24 1961-11-16 Braun Camera Werk Photographic camera with a galvanometer arranged in the camera housing

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