FR2395527A1 - Dispositif de mesure de luminance - Google Patents

Dispositif de mesure de luminance

Info

Publication number
FR2395527A1
FR2395527A1 FR7805247A FR7805247A FR2395527A1 FR 2395527 A1 FR2395527 A1 FR 2395527A1 FR 7805247 A FR7805247 A FR 7805247A FR 7805247 A FR7805247 A FR 7805247A FR 2395527 A1 FR2395527 A1 FR 2395527A1
Authority
FR
France
Prior art keywords
brightness
plane
order
measuring element
original
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.)
Granted
Application number
FR7805247A
Other languages
English (en)
Other versions
FR2395527B1 (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.)
Klimsch and Co KG
Original Assignee
Klimsch and Co KG
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 Klimsch and Co KG filed Critical Klimsch and Co KG
Publication of FR2395527A1 publication Critical patent/FR2395527A1/fr
Application granted granted Critical
Publication of FR2395527B1 publication Critical patent/FR2395527B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Projection Apparatus (AREA)

Abstract

L'invention concerne un dispositif de mesure de luminance. L'élément de mesure 4 est adapté à un endroit du plan de prise de vue 1 qui est identique pour toutes les mesures, ou à un endroit conjugué à cet effet. On prévoit des éléments 20 pour déplacer le plan 5 de l'original 5', pouvant être exposé par lumière réfléchie ou transmise afin de reproduire, sur l'élément de mesure 4, la zone à mesurer de l'original 5', tandis que l'on prévoit une source de lumière de repérage 3 dont le rayon peut être introduit dans le parcours 6 allant de l'élément de mesure 4 à la zone de mesure. Le dispositif de l'invention est utilisé pour mesurer la luminance d'images projetées dans le plan de prise de vue d'une chambre photographique de reproduction.
FR7805247A 1977-03-26 1978-02-23 Dispositif de mesure de luminance Granted FR2395527A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772713413 DE2713413C2 (de) 1977-03-26 1977-03-26 Vorrichtung zur Helligkeitsmessung an von in die Aufnahmeebene einer Reproduktionskamera projizierten Bildern

Publications (2)

Publication Number Publication Date
FR2395527A1 true FR2395527A1 (fr) 1979-01-19
FR2395527B1 FR2395527B1 (fr) 1983-12-16

Family

ID=6004755

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7805247A Granted FR2395527A1 (fr) 1977-03-26 1978-02-23 Dispositif de mesure de luminance

Country Status (4)

Country Link
CH (1) CH633375A5 (fr)
DE (1) DE2713413C2 (fr)
DK (1) DK129378A (fr)
FR (1) FR2395527A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2929381A1 (de) * 1979-07-20 1981-01-22 Klimsch & Co Verfahren zur dichtemessung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1314745A (fr) * 1961-02-13 1963-01-11 Kodak Pathe Posemètre, notamment pour appareil de copie photographique
DE1195596B (de) * 1962-06-15 1965-06-24 Satoru Ouchi Kopierprojektionsanordnung
US3698809A (en) * 1971-10-07 1972-10-17 Eastman Kodak Co Automatic illumination control for photographic printing apparatus
US3765310A (en) * 1971-11-12 1973-10-16 Pentacon Dresden Veb Optical system
DE2251334A1 (de) * 1972-10-19 1973-11-08 Eskofot As Reproduktionskamera mit einem steuerkreis zur automatischen regelung der belichtungszeit

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1314745A (fr) * 1961-02-13 1963-01-11 Kodak Pathe Posemètre, notamment pour appareil de copie photographique
US3117490A (en) * 1961-02-13 1964-01-14 Eastman Kodak Co Photographic exposure meter
DE1195596B (de) * 1962-06-15 1965-06-24 Satoru Ouchi Kopierprojektionsanordnung
US3698809A (en) * 1971-10-07 1972-10-17 Eastman Kodak Co Automatic illumination control for photographic printing apparatus
FR2155624A5 (fr) * 1971-10-07 1973-05-18 Eastman Kodak Co
US3765310A (en) * 1971-11-12 1973-10-16 Pentacon Dresden Veb Optical system
DE2251334A1 (de) * 1972-10-19 1973-11-08 Eskofot As Reproduktionskamera mit einem steuerkreis zur automatischen regelung der belichtungszeit

Also Published As

Publication number Publication date
DE2713413B1 (de) 1978-07-20
CH633375A5 (en) 1982-11-30
DK129378A (da) 1978-09-27
FR2395527B1 (fr) 1983-12-16
DE2713413C2 (de) 1979-03-15

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Legal Events

Date Code Title Description
ST Notification of lapse