FR894919A - Posemètre photoélectrique à plusieurs sensibilités - Google Patents

Posemètre photoélectrique à plusieurs sensibilités

Info

Publication number
FR894919A
FR894919A FR894919DA FR894919A FR 894919 A FR894919 A FR 894919A FR 894919D A FR894919D A FR 894919DA FR 894919 A FR894919 A FR 894919A
Authority
FR
France
Prior art keywords
light meter
photoelectric light
sensitivity photoelectric
sensitivity
meter
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
English (en)
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon AG
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 Zeiss Ikon AG filed Critical Zeiss Ikon AG
Application granted granted Critical
Publication of FR894919A publication Critical patent/FR894919A/fr
Expired legal-status Critical Current

Links

Classifications

    • 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)
FR894919D 1942-06-12 1943-05-25 Posemètre photoélectrique à plusieurs sensibilités Expired FR894919A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE894919X 1942-06-12

Publications (1)

Publication Number Publication Date
FR894919A true FR894919A (fr) 1945-01-10

Family

ID=6847451

Family Applications (1)

Application Number Title Priority Date Filing Date
FR894919D Expired FR894919A (fr) 1942-06-12 1943-05-25 Posemètre photoélectrique à plusieurs sensibilités

Country Status (1)

Country Link
FR (1) FR894919A (fr)

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