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:
Mar. 04, 1980
Filed:
Jun. 28, 1978
James B Armstrong, Phoenix, AZ (US);
J Robert Trimmier, Glendale, AZ (US);
Sperry Corporation, New York, NY (US);
Abstract
A transparent face plate for a bright display device, such as an airborne cathode ray indicator often viewed under high ambient light intensities, is bonded directly to the viewing face of the display device by a transparent bonding material dyed to provide an optical filter whose transmission characteristics, determined in part by the thickness of the colored bonding agent, are generally matched to the spectrum emitted by the phosphor within the cathode ray tube so as to provide an optimally contrast enhanced display. A unique assembly method and gasket arrangement are used to determine precisely the spacing between the face plate and the indicator viewing face and, therefore, the filter thickness, and to form a temporarily sealed cavity into which the colored or dyed bonding agent is injected and then polymerized.