FR793947A - Device for varying the intensity of a beam of radiated energy - Google Patents

Device for varying the intensity of a beam of radiated energy

Info

Publication number
FR793947A
FR793947A FR793947DA FR793947A FR 793947 A FR793947 A FR 793947A FR 793947D A FR793947D A FR 793947DA FR 793947 A FR793947 A FR 793947A
Authority
FR
France
Prior art keywords
varying
intensity
radiated energy
radiated
energy
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
Oscar Kanner
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 FR793947A publication Critical patent/FR793947A/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
FR793947D 1934-11-12 1934-11-12 Device for varying the intensity of a beam of radiated energy Expired FR793947A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR793947T 1934-11-12

Publications (1)

Publication Number Publication Date
FR793947A true FR793947A (en) 1936-02-04

Family

ID=9233815

Family Applications (1)

Application Number Title Priority Date Filing Date
FR793947D Expired FR793947A (en) 1934-11-12 1934-11-12 Device for varying the intensity of a beam of radiated energy

Country Status (1)

Country Link
FR (1) FR793947A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746395C (en) * 1937-11-09 1944-08-05 Magnus Rudolf Dimming device for devices for measuring the light transmission, in particular light-permeable layers.
US2524303A (en) * 1940-03-07 1950-10-03 Bonet-Maury Paul Photometer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746395C (en) * 1937-11-09 1944-08-05 Magnus Rudolf Dimming device for devices for measuring the light transmission, in particular light-permeable layers.
US2524303A (en) * 1940-03-07 1950-10-03 Bonet-Maury Paul Photometer

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