GB1304943A - - Google Patents

Info

Publication number
GB1304943A
GB1304943A GB2639070A GB2639070A GB1304943A GB 1304943 A GB1304943 A GB 1304943A GB 2639070 A GB2639070 A GB 2639070A GB 2639070 A GB2639070 A GB 2639070A GB 1304943 A GB1304943 A GB 1304943A
Authority
GB
United Kingdom
Prior art keywords
photo
ambient
transistor
diffuse light
diffuse
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
GB2639070A
Other languages
English (en)
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
Publication of GB1304943A publication Critical patent/GB1304943A/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
    • G03B27/80—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus in dependence upon automatic analysis of the original

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
GB2639070A 1969-06-02 1970-06-01 Expired GB1304943A (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82935669A 1969-06-02 1969-06-02

Publications (1)

Publication Number Publication Date
GB1304943A true GB1304943A (enExample) 1973-01-31

Family

ID=25254300

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2639070A Expired GB1304943A (enExample) 1969-06-02 1970-06-01

Country Status (4)

Country Link
CA (1) CA921151A (enExample)
DE (1) DE2027505A1 (enExample)
FR (1) FR2049709A5 (enExample)
GB (1) GB1304943A (enExample)

Also Published As

Publication number Publication date
DE2027505A1 (de) 1970-12-23
FR2049709A5 (enExample) 1971-03-26
CA921151A (en) 1973-02-13

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees