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FR883396A - Device for uniform illumination of a surface - Google Patents

Device for uniform illumination of a surface

Info

Publication number
FR883396A
FR883396A FR883396DA FR883396A FR 883396 A FR883396 A FR 883396A FR 883396D A FR883396D A FR 883396DA FR 883396 A FR883396 A FR 883396A
Authority
FR
France
Prior art keywords
uniform illumination
illumination
uniform
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
Other languages
French (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.)
Gevaert Photo Producten NV
Original Assignee
Gevaert Photo Producten NV
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 Gevaert Photo Producten NV filed Critical Gevaert Photo Producten NV
Application granted granted Critical
Publication of FR883396A publication Critical patent/FR883396A/en
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
    • G03B27/02—Exposure apparatus for contact printing
    • G03B27/14—Details
    • G03B27/16—Illumination arrangements, e.g. positioning of lamps, positioning of reflectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR883396D 1941-01-10 1942-06-19 Device for uniform illumination of a surface Expired FR883396A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL883396X 1941-01-10

Publications (1)

Publication Number Publication Date
FR883396A true FR883396A (en) 1943-07-02

Family

ID=19853617

Family Applications (1)

Application Number Title Priority Date Filing Date
FR883396D Expired FR883396A (en) 1941-01-10 1942-06-19 Device for uniform illumination of a surface

Country Status (1)

Country Link
FR (1) FR883396A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4035078A (en) * 1975-11-05 1977-07-12 Woo Harry W Method and apparatus for increasing contrast and resolution from low density film

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4035078A (en) * 1975-11-05 1977-07-12 Woo Harry W Method and apparatus for increasing contrast and resolution from low density film

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