FR1102121A - Method and device for comparing two light beams - Google Patents

Method and device for comparing two light beams

Info

Publication number
FR1102121A
FR1102121A FR1102121DA FR1102121A FR 1102121 A FR1102121 A FR 1102121A FR 1102121D A FR1102121D A FR 1102121DA FR 1102121 A FR1102121 A FR 1102121A
Authority
FR
France
Prior art keywords
comparing
light beams
beams
light
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
Marcel Aupoix
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 FR1102121A publication Critical patent/FR1102121A/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
    • G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR1102121D 1954-03-30 1954-03-30 Method and device for comparing two light beams Expired FR1102121A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1102121T 1954-03-30

Publications (1)

Publication Number Publication Date
FR1102121A true FR1102121A (en) 1955-10-17

Family

ID=9621435

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1102121D Expired FR1102121A (en) 1954-03-30 1954-03-30 Method and device for comparing two light beams

Country Status (1)

Country Link
FR (1) FR1102121A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2194957A1 (en) * 1972-08-04 1974-03-01 Howard Grubb Parsons Et Cy Ltd
EP0118823A2 (en) * 1983-03-04 1984-09-19 Steiner, R., Prof. Dr. Method of and device for determining turbidity in liquids

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2194957A1 (en) * 1972-08-04 1974-03-01 Howard Grubb Parsons Et Cy Ltd
EP0118823A2 (en) * 1983-03-04 1984-09-19 Steiner, R., Prof. Dr. Method of and device for determining turbidity in liquids
EP0118823A3 (en) * 1983-03-04 1985-11-13 Steiner, R., Prof. Dr. Method of and device for determining turbidity in liquids

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