FR89243E - Photomètre de comparaison - Google Patents

Photomètre de comparaison

Info

Publication number
FR89243E
FR89243E FR38203A FR38203A FR89243E FR 89243 E FR89243 E FR 89243E FR 38203 A FR38203 A FR 38203A FR 38203 A FR38203 A FR 38203A FR 89243 E FR89243 E FR 89243E
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
FR38203A
Other languages
English (en)
Inventor
Conrad Heinrich Biber
Jeremy Myles Topaz
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 FR38203A priority Critical patent/FR89243E/fr
Application granted granted Critical
Publication of FR89243E publication Critical patent/FR89243E/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
    • 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)
FR38203A 1965-11-12 1965-11-12 Photomètre de comparaison Expired FR89243E (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR38203A FR89243E (fr) 1965-11-12 1965-11-12 Photomètre de comparaison

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR38203A FR89243E (fr) 1965-11-12 1965-11-12 Photomètre de comparaison

Publications (1)

Publication Number Publication Date
FR89243E true FR89243E (fr) 1967-05-26

Family

ID=8592379

Family Applications (1)

Application Number Title Priority Date Filing Date
FR38203A Expired FR89243E (fr) 1965-11-12 1965-11-12 Photomètre de comparaison

Country Status (1)

Country Link
FR (1) FR89243E (fr)

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