GB190310240A - Improvements in and relating to Photographic Light Screens. - Google Patents

Improvements in and relating to Photographic Light Screens.

Info

Publication number
GB190310240A
GB190310240A GB190310240DA GB190310240A GB 190310240 A GB190310240 A GB 190310240A GB 190310240D A GB190310240D A GB 190310240DA GB 190310240 A GB190310240 A GB 190310240A
Authority
GB
United Kingdom
Prior art keywords
strips
coloured
relating
photographic light
edges
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
Inventor
Thomas Willsie
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB190310240A publication Critical patent/GB190310240A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/04—Additive processes using colour screens; Materials therefor; Preparing or processing such materials
    • G03C7/06—Manufacture of colour screens

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Surface Treatment Of Optical Elements (AREA)

Abstract

10,240. Willsie, T. May 5. Coloured screens.-Relates to a coloured screen for placing on the lens, in front or behind, to equalize the exposure of the sky and other parts. The screen consists of horizontal binds I of coloured glass or other material arranged with their edges bevelled and overlapping with or without a transparent support. The strips are arranged in the prismatic order of colours, red being at the top A colourless strip may take the place of the green. The strips form a disc which is mounted in a tube J having a shoulder K and a locking- ring L. The edges of the strips may be curved instead of straight.
GB190310240D 1903-05-05 1903-05-05 Improvements in and relating to Photographic Light Screens. Expired GB190310240A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR331760T 1903-05-05
GB190310240T 1903-05-05

Publications (1)

Publication Number Publication Date
GB190310240A true GB190310240A (en) 1903-06-18

Family

ID=37000521

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190310240D Expired GB190310240A (en) 1903-05-05 1903-05-05 Improvements in and relating to Photographic Light Screens.

Country Status (2)

Country Link
FR (1) FR331760A (en)
GB (1) GB190310240A (en)

Also Published As

Publication number Publication date
FR331760A (en) 1903-10-01

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