FR640871A - Sensito-photomètre - Google Patents

Sensito-photomètre

Info

Publication number
FR640871A
FR640871A FR640871DA FR640871A FR 640871 A FR640871 A FR 640871A FR 640871D A FR640871D A FR 640871DA FR 640871 A FR640871 A FR 640871A
Authority
FR
France
Prior art keywords
sensito
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)
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.)
FILMOGRAPH ETS
Original Assignee
FILMOGRAPH ETS
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 FILMOGRAPH ETS filed Critical FILMOGRAPH ETS
Application granted granted Critical
Publication of FR640871A publication Critical patent/FR640871A/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
    • G01J1/12—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using wholly visual means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR640871D 1927-02-23 1927-02-23 Sensito-photomètre Expired FR640871A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR640871T 1927-02-23

Publications (1)

Publication Number Publication Date
FR640871A true FR640871A (fr) 1928-07-24

Family

ID=8997749

Family Applications (1)

Application Number Title Priority Date Filing Date
FR640871D Expired FR640871A (fr) 1927-02-23 1927-02-23 Sensito-photomètre

Country Status (1)

Country Link
FR (1) FR640871A (fr)

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