FR1233636A - Dispositif assurant la variation du contraste des images - Google Patents

Dispositif assurant la variation du contraste des images

Info

Publication number
FR1233636A
FR1233636A FR793949A FR793949A FR1233636A FR 1233636 A FR1233636 A FR 1233636A FR 793949 A FR793949 A FR 793949A FR 793949 A FR793949 A FR 793949A FR 1233636 A FR1233636 A FR 1233636A
Authority
FR
France
Prior art keywords
varying
images
contrast
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
FR793949A
Other languages
English (en)
Inventor
Oscar-Henri Ingber
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 filed Critical
Priority to FR793949A priority Critical patent/FR1233636A/fr
Application granted granted Critical
Publication of FR1233636A publication Critical patent/FR1233636A/fr
Expired 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
    • G03B27/727—Optical projection devices wherein the contrast is controlled optically (e.g. uniform exposure, two colour exposure on variable contrast sensitive material)

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
FR793949A 1959-05-05 1959-05-05 Dispositif assurant la variation du contraste des images Expired FR1233636A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR793949A FR1233636A (fr) 1959-05-05 1959-05-05 Dispositif assurant la variation du contraste des images

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR793949A FR1233636A (fr) 1959-05-05 1959-05-05 Dispositif assurant la variation du contraste des images

Publications (1)

Publication Number Publication Date
FR1233636A true FR1233636A (fr) 1960-10-12

Family

ID=8714486

Family Applications (1)

Application Number Title Priority Date Filing Date
FR793949A Expired FR1233636A (fr) 1959-05-05 1959-05-05 Dispositif assurant la variation du contraste des images

Country Status (1)

Country Link
FR (1) FR1233636A (fr)

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