FR1391420A - Device for measuring illuminance - Google Patents

Device for measuring illuminance

Info

Publication number
FR1391420A
FR1391420A FR972124A FR972124A FR1391420A FR 1391420 A FR1391420 A FR 1391420A FR 972124 A FR972124 A FR 972124A FR 972124 A FR972124 A FR 972124A FR 1391420 A FR1391420 A FR 1391420A
Authority
FR
France
Prior art keywords
measuring illuminance
illuminance
measuring
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
FR972124A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Priority to FR972124A priority Critical patent/FR1391420A/en
Application granted granted Critical
Publication of FR1391420A publication Critical patent/FR1391420A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR972124A 1964-04-24 1964-04-24 Device for measuring illuminance Expired FR1391420A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR972124A FR1391420A (en) 1964-04-24 1964-04-24 Device for measuring illuminance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR972124A FR1391420A (en) 1964-04-24 1964-04-24 Device for measuring illuminance

Publications (1)

Publication Number Publication Date
FR1391420A true FR1391420A (en) 1965-03-05

Family

ID=8828558

Family Applications (1)

Application Number Title Priority Date Filing Date
FR972124A Expired FR1391420A (en) 1964-04-24 1964-04-24 Device for measuring illuminance

Country Status (1)

Country Link
FR (1) FR1391420A (en)

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