FR87726E - Photomètre de comparaison - Google Patents

Photomètre de comparaison

Info

Publication number
FR87726E
FR87726E FR12888A FR12888A FR87726E FR 87726 E FR87726 E FR 87726E FR 12888 A FR12888 A FR 12888A FR 12888 A FR12888 A FR 12888A FR 87726 E FR87726 E FR 87726E
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
FR12888A
Other languages
English (en)
Inventor
Edwin Herbert Land
William Howard Ryan
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 FR12888A priority Critical patent/FR87726E/fr
Application granted granted Critical
Publication of FR87726E publication Critical patent/FR87726E/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)
FR12888A 1965-04-12 1965-04-12 Photomètre de comparaison Expired FR87726E (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR12888A FR87726E (fr) 1965-04-12 1965-04-12 Photomètre de comparaison

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR12888A FR87726E (fr) 1965-04-12 1965-04-12 Photomètre de comparaison

Publications (1)

Publication Number Publication Date
FR87726E true FR87726E (fr) 1966-07-22

Family

ID=8576222

Family Applications (1)

Application Number Title Priority Date Filing Date
FR12888A Expired FR87726E (fr) 1965-04-12 1965-04-12 Photomètre de comparaison

Country Status (1)

Country Link
FR (1) FR87726E (fr)

Similar Documents

Publication Publication Date Title
DK114096B (da) Plov.
FR1512918A (fr) Photomètre
BE755852A (fr) Photometre
CH465904A (de) Photometer
DK137848B (da) Lystransmitterende genstand.
DK108843C (da) Rambuk.
DK111411B (da) Dejdelemaskine.
FR1511166A (fr) Photomètre intégrateur perfectionné
DK113540B (da) Høvender.
DK131816B (da) Stannosaltpræparat.
FR1432798A (fr) Agitateur
AT271940B (de) Photometer
DK108090C (da) Rambuk.
DK111253B (da) Ajlespreder.
FR89243E (fr) Photomètre de comparaison
FR1436204A (fr) Photomètre de comparaison
FR88185E (fr) Photomètre de comparaison
FR87727E (fr) Photomètre de comparaison
FR87726E (fr) Photomètre de comparaison
AT314865B (de) Vergleichsphotometer
DK112088B (da) Graveskovl.
FR90432E (fr) Photomètre de comparaison
FR1482451A (fr) Photomètre de comparaison
NL6615542A (nl) Discriminator
DE1917315U (de) Bunsenbrenner.