Single layer optical coupler for projection TV CRT

Details Single layer optical coupler for projection TV CRT Single layer optical coupler for projection TV CRT

1986-05-22

1987-12-01

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358 64, 358237, 358242, 358250, H04N 574

Patent

active

047108207

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.

REFERENCES:
patent: 2517774 (1950-08-01), Epstein
patent: 3800085 (1974-03-01), Ambats
patent: 4027328 (1977-05-01), Lessman
patent: 4150320 (1979-04-01), Mitchell
patent: 4151554 (1979-04-01), Tucker
patent: 4245242 (1981-01-01), Trcka
patent: 4405949 (1983-09-01), Hockenbrock et al.
patent: 4511927 (1985-04-01), Bauer

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