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:
Dec. 01, 1987
Filed:
May. 22, 1986
William N Roberts, Niles, IL (US);
Zenith Electronics Corporation, Glenview, IL (US);
Abstract
A single layer optical coupler pad is disposed between and in intimate contact with the window of a cathode ray tube (CRT) and a multi-lens assembly for transmitting a video image on the CRT's window to the lens assembly for display on the screen of a projection television receiver. The optical coupler pad has a refractive index closely matching those of the CRT window and lenses and high compressibility to allow for tight-fitting lens-CRT mounting without damage to either. The single layer configuration of the optical coupler pad allows it to be produced at low cost, simplifies its installation during projection television receiver CRT/lens assembly and its removal and retrofitting following television receiver repair, and eliminates the possibility of fluid leakage under extreme environmental conditions. The optical coupler is comprised of a unique combination of first and second resins and first and second catalysts to yield a durable, yet pliable, transparent sheet which is dry and easily handled.