GB1111894A - Improvements in or relating to reproduction photographic apparatus,allowing contrast reduction - Google Patents

Improvements in or relating to reproduction photographic apparatus,allowing contrast reduction

Info

Publication number
GB1111894A
GB1111894A GB1075666A GB1075666A GB1111894A GB 1111894 A GB1111894 A GB 1111894A GB 1075666 A GB1075666 A GB 1075666A GB 1075666 A GB1075666 A GB 1075666A GB 1111894 A GB1111894 A GB 1111894A
Authority
GB
United Kingdom
Prior art keywords
relating
photographic apparatus
contrast reduction
allowing contrast
reproduction
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
GB1075666A
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.)
Meopta np
Original Assignee
Meopta np
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 Meopta np filed Critical Meopta np
Publication of GB1111894A publication Critical patent/GB1111894A/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
    • G03B27/72—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)
GB1075666A 1965-03-25 1966-03-11 Improvements in or relating to reproduction photographic apparatus,allowing contrast reduction Expired GB1111894A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS197065 1965-03-25

Publications (1)

Publication Number Publication Date
GB1111894A true GB1111894A (en) 1968-05-01

Family

ID=5355441

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1075666A Expired GB1111894A (en) 1965-03-25 1966-03-11 Improvements in or relating to reproduction photographic apparatus,allowing contrast reduction

Country Status (1)

Country Link
GB (1) GB1111894A (en)

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