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Title: Process for applying a light-absorbing, electron permeable layer within an image intensifier tube
Abstract:
A process for applying within an image intensifier tube, in particular one of the proximity-focus type, a light absorbing, electron permeable layer on to a film coated on a layer of luminescent material applied to the anode of the tube. The layer is applied by evaporation of a low atomic weight element, preferably silicon or boron, or a compound of such an element, under conditions of high vacuum, preferably in the range of 10.sup.-5 to 10.sup.-6 torr, and up to a thickness of 1/4.lambda., where .lambda. is the average wavelength of the light which during operation of the tube impinges upon the photocathode thereof.
Other info: Inventors: Houtkamp, Johannes J. (Delft, NL) Application Number: 841067 Filing Date: 1977-10-11 Publication_date: 1980-05-06 Assignee: N.V. Optische Industrie "De Oude Delft" (Delft, NL) Primary Class(es): 427/66 427/77, 427/78, 427/109, 427/123, 427/255.15, 427/255.7, 445/10, 445/11 Other Classes: US Patent Ref:
Other Refs: Other References: Powell et al., Vapor Deposition, pp. 346-349 & 403-404, (1966), John Wiley & Sons Inc. N.Y. | |