FR8873E - Photomètre - Google Patents

Photomètre

Info

Publication number
FR8873E
FR8873E FR8873DA FR8873E FR 8873 E FR8873 E FR 8873E FR 8873D A FR8873D A FR 8873DA FR 8873 E FR8873 E FR 8873E
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
English (en)
Inventor
Guillaume-Henri Delmas-Azema
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.)
GUILLAUME HENRI DELMAS AZEMA
Original Assignee
GUILLAUME HENRI DELMAS AZEMA
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 GUILLAUME HENRI DELMAS AZEMA filed Critical GUILLAUME HENRI DELMAS AZEMA
Application granted granted Critical
Publication of FR8873E publication Critical patent/FR8873E/fr
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
    • G01J1/34—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 separate light paths used alternately or sequentially, e.g. flicker

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR8873D 1907-10-23 1908-02-03 Photomètre Expired FR8873E (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR383228T 1907-10-23
FR8873T 1908-02-03

Publications (1)

Publication Number Publication Date
FR8873E true FR8873E (fr) 1908-07-11

Family

ID=1351507

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8873D Expired FR8873E (fr) 1907-10-23 1908-02-03 Photomètre

Country Status (1)

Country Link
FR (1) FR8873E (fr)

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