The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 06, 1980
Filed:
Oct. 11, 1977
Johannes J Houtkamp, Delft, NL;
N.V. Optische Industrie 'De Oude Delft', Delft, NL;
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.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile