FR803581A - Illuminance measuring camera - Google Patents

Illuminance measuring camera

Info

Publication number
FR803581A
FR803581A FR803581DA FR803581A FR 803581 A FR803581 A FR 803581A FR 803581D A FR803581D A FR 803581DA FR 803581 A FR803581 A FR 803581A
Authority
FR
France
Prior art keywords
measuring camera
illuminance measuring
illuminance
camera
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
Other languages
French (fr)
Inventor
Michael Burger
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 FR803581A publication Critical patent/FR803581A/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)
FR803581D 1935-04-17 1936-03-20 Illuminance measuring camera Expired FR803581A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE803581X 1935-04-17

Publications (1)

Publication Number Publication Date
FR803581A true FR803581A (en) 1936-10-03

Family

ID=6721935

Family Applications (1)

Application Number Title Priority Date Filing Date
FR803581D Expired FR803581A (en) 1935-04-17 1936-03-20 Illuminance measuring camera

Country Status (1)

Country Link
FR (1) FR803581A (en)

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