GB212390A - - Google Patents

Info

Publication number
GB212390A
GB212390A GB212390DA GB212390A GB 212390 A GB212390 A GB 212390A GB 212390D A GB212390D A GB 212390DA GB 212390 A GB212390 A GB 212390A
Authority
GB
United Kingdom
Prior art keywords
cell
piston
plate
glass
nut
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
Publication date
Publication of GB212390A publication Critical patent/GB212390A/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)
  • Optical Filters (AREA)

Abstract

212,390. Denne, M. T. Feb. 20, 1923. Colour filters. - Light filters or screen for varying the colour or intensity of a beam of light consists of a cell having glass sides at right angles to the transmitted beam adapted to be moved towards or away from one another to vary the thickness of the contents of the cell in the direction of the beam. The cell a is supported on a vertical rod b and is recessed at one end to receive a glass plate a<1>, held in place by a ring a<2> so as be fluid-tight. A piston a<3> slides in the cell a and carries at its inner end a glass plate a<4> which may be moved into contact with the plate a<1> so that the whole of the incident beam is transmitted. The piston consists of two sleeves a', a<5>, the outer one being flanged and connected to a nut a<8> engaging threads on a screw a<9> forming an extension of a wheel all, operated by the shaft a<13>. Rotation of the shaft a<13> adjusts the thickness of the fluid in the cell by the separation of the glass plates a<1>, a<4>. The space between the plates is in communication with a reservoir forming part of the cell casing. The nut a<8> is prevented from rotating bv the stud a<15> engaging a slot in the plate a<16>, which when removed permits the piston to be readily withdrawn from the cell.
GB212390D Expired GB212390A (en)

Publications (1)

Publication Number Publication Date
GB212390A true GB212390A (en) 1900-01-01

Family

ID=1736024

Family Applications (1)

Application Number Title Priority Date Filing Date
GB212390D Expired GB212390A (en)

Country Status (1)

Country Link
GB (1) GB212390A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1244685B (en) * 1963-12-07 1967-07-20 Luis Rodriguez Aparicio Light filter in which a layer of liquid acting as a filter can be continuously changed in its layer thickness
DE3515062A1 (en) * 1985-04-26 1986-10-30 Philipp von 4800 Bielefeld Wallenberg Colour filter for spotlights

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1244685B (en) * 1963-12-07 1967-07-20 Luis Rodriguez Aparicio Light filter in which a layer of liquid acting as a filter can be continuously changed in its layer thickness
DE3515062A1 (en) * 1985-04-26 1986-10-30 Philipp von 4800 Bielefeld Wallenberg Colour filter for spotlights

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