FR1436204A - Comparison photometer - Google Patents

Comparison photometer

Info

Publication number
FR1436204A
FR1436204A FR12823A FR12823A FR1436204A FR 1436204 A FR1436204 A FR 1436204A FR 12823 A FR12823 A FR 12823A FR 12823 A FR12823 A FR 12823A FR 1436204 A FR1436204 A FR 1436204A
Authority
FR
France
Prior art keywords
comparison photometer
photometer
comparison
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
FR12823A
Other languages
French (fr)
Inventor
Edwin Herbert Land
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.)
Polaroid Corp
International Polaroid Corp
Original Assignee
Polaroid Corp
International Polaroid Corp
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 Polaroid Corp, International Polaroid Corp filed Critical Polaroid Corp
Priority to FR12823A priority Critical patent/FR1436204A/en
Application granted granted Critical
Publication of FR1436204A publication Critical patent/FR1436204A/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
    • G01J1/12—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using wholly visual means
    • G01J1/122—Visual exposure meters for determining the exposure time in photographical recording or reproducing
    • G01J1/124—Visual exposure meters for determining the exposure time in photographical recording or reproducing based on the comparison of the intensity of measured light with a comparison source or comparison illuminated surface
    • 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)
FR12823A 1965-04-12 1965-04-12 Comparison photometer Expired FR1436204A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR12823A FR1436204A (en) 1965-04-12 1965-04-12 Comparison photometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR12823A FR1436204A (en) 1965-04-12 1965-04-12 Comparison photometer

Publications (1)

Publication Number Publication Date
FR1436204A true FR1436204A (en) 1966-04-22

Family

ID=8576176

Family Applications (1)

Application Number Title Priority Date Filing Date
FR12823A Expired FR1436204A (en) 1965-04-12 1965-04-12 Comparison photometer

Country Status (1)

Country Link
FR (1) FR1436204A (en)

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