FR775818A - Dispositif de mesure de la lumière - Google Patents

Dispositif de mesure de la lumière

Info

Publication number
FR775818A
FR775818A FR775818DA FR775818A FR 775818 A FR775818 A FR 775818A FR 775818D A FR775818D A FR 775818DA FR 775818 A FR775818 A FR 775818A
Authority
FR
France
Prior art keywords
measuring device
light measuring
light
measuring
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Application granted granted Critical
Publication of FR775818A publication Critical patent/FR775818A/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
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR775818D 1933-08-31 1934-07-13 Dispositif de mesure de la lumière Expired FR775818A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US775818XA 1933-08-31 1933-08-31

Publications (1)

Publication Number Publication Date
FR775818A true FR775818A (fr) 1935-01-10

Family

ID=22138926

Family Applications (1)

Application Number Title Priority Date Filing Date
FR775818D Expired FR775818A (fr) 1933-08-31 1934-07-13 Dispositif de mesure de la lumière

Country Status (1)

Country Link
FR (1) FR775818A (fr)

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