FR883730A - Improvements to photoelectric luxmeters - Google Patents

Improvements to photoelectric luxmeters

Info

Publication number
FR883730A
FR883730A FR883730DA FR883730A FR 883730 A FR883730 A FR 883730A FR 883730D A FR883730D A FR 883730DA FR 883730 A FR883730 A FR 883730A
Authority
FR
France
Prior art keywords
luxmeters
photoelectric
photoelectric luxmeters
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.)
Metrawatt AG
Original Assignee
Metrawatt AG
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 Metrawatt AG filed Critical Metrawatt AG
Application granted granted Critical
Publication of FR883730A publication Critical patent/FR883730A/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
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing
    • G01J1/4214—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for view-taking apparatus

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR883730D 1942-07-02 1942-07-02 Improvements to photoelectric luxmeters Expired FR883730A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR883730T 1942-07-02

Publications (1)

Publication Number Publication Date
FR883730A true FR883730A (en) 1943-07-13

Family

ID=9374619

Family Applications (1)

Application Number Title Priority Date Filing Date
FR883730D Expired FR883730A (en) 1942-07-02 1942-07-02 Improvements to photoelectric luxmeters

Country Status (1)

Country Link
FR (1) FR883730A (en)

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