FR968759A - Photometer - Google Patents

Photometer

Info

Publication number
FR968759A
FR968759A FR968759DA FR968759A FR 968759 A FR968759 A FR 968759A FR 968759D A FR968759D A FR 968759DA FR 968759 A FR968759 A FR 968759A
Authority
FR
France
Prior art keywords
photometer
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.)
AMERICAN BOLEX Co
Original Assignee
AMERICAN BOLEX 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 AMERICAN BOLEX Co filed Critical AMERICAN BOLEX Co
Application granted granted Critical
Publication of FR968759A publication Critical patent/FR968759A/en
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)
FR968759D 1947-12-24 1948-07-06 Photometer Expired FR968759A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US968759XA 1947-12-24 1947-12-24

Publications (1)

Publication Number Publication Date
FR968759A true FR968759A (en) 1950-12-05

Family

ID=22259511

Family Applications (1)

Application Number Title Priority Date Filing Date
FR968759D Expired FR968759A (en) 1947-12-24 1948-07-06 Photometer

Country Status (1)

Country Link
FR (1) FR968759A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2824696A (en) * 1956-09-10 1958-02-25 Donald H Norwood Direct-reading photographic exposure meters and calculator devices therefor
US2913955A (en) * 1957-01-28 1959-11-24 Donald H Norwood Direct reading light meter and light valve unit therefor
US2934996A (en) * 1957-01-28 1960-05-03 Honeywell Regulator Co Photographic exposure meter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2824696A (en) * 1956-09-10 1958-02-25 Donald H Norwood Direct-reading photographic exposure meters and calculator devices therefor
US2913955A (en) * 1957-01-28 1959-11-24 Donald H Norwood Direct reading light meter and light valve unit therefor
US2934996A (en) * 1957-01-28 1960-05-03 Honeywell Regulator Co Photographic exposure meter

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