FR700066A - Photometer - Google Patents

Photometer

Info

Publication number
FR700066A
FR700066A FR700066DA FR700066A FR 700066 A FR700066 A FR 700066A FR 700066D A FR700066D A FR 700066DA FR 700066 A FR700066 A FR 700066A
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
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.)
Holophane SAS
Original Assignee
Holophane SAS
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 Holophane SAS filed Critical Holophane SAS
Application granted granted Critical
Publication of FR700066A publication Critical patent/FR700066A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR700066D 1930-08-04 1930-08-04 Photometer Expired FR700066A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR700066T 1930-08-04

Publications (1)

Publication Number Publication Date
FR700066A true FR700066A (en) 1931-02-24

Family

ID=9048798

Family Applications (1)

Application Number Title Priority Date Filing Date
FR700066D Expired FR700066A (en) 1930-08-04 1930-08-04 Photometer

Country Status (1)

Country Link
FR (1) FR700066A (en)

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