FR688544A - Luminescence comparison and measurement device - Google Patents

Luminescence comparison and measurement device

Info

Publication number
FR688544A
FR688544A FR688544DA FR688544A FR 688544 A FR688544 A FR 688544A FR 688544D A FR688544D A FR 688544DA FR 688544 A FR688544 A FR 688544A
Authority
FR
France
Prior art keywords
measurement device
luminescence
comparison
luminescence comparison
measurement
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
Jean Ripert
Georges Bernheim
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 FR688544A publication Critical patent/FR688544A/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
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/20—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
    • G01J1/22—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using a variable element in the light-path, e.g. filter, polarising means
FR688544D 1929-04-11 1929-04-11 Luminescence comparison and measurement device Expired FR688544A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR688544T 1929-04-11

Publications (1)

Publication Number Publication Date
FR688544A true FR688544A (en) 1930-08-26

Family

ID=9026781

Family Applications (1)

Application Number Title Priority Date Filing Date
FR688544D Expired FR688544A (en) 1929-04-11 1929-04-11 Luminescence comparison and measurement device

Country Status (1)

Country Link
FR (1) FR688544A (en)

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