Cathode ray tube provided with a faceplate having a convex...

Details Cathode ray tube provided with a faceplate having a convex... Cathode ray tube provided with a faceplate having a convex...

2007-01-02

2007-01-02

Santiago, Mariceli (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Envelope

C313S035000, C313S036000, C313S017000, C313S110000, C313S111000, C313S112000, C313S47700R, C359S649000, C348S781000, C348S785000, C348S832000

Reexamination Certificate

active

10836519

ABSTRACT:
In a projection cathode ray tube device in which a projection cathode ray tube and a projection lens assembly are coupled and held by a coupler, superior focus characteristics and high resolution are realized by eliminating the deviation between the center of the phosphor screen of the cathode ray tube and the center of the lens assembly. In the cathode ray tube, each of the outside and inside surfaces of a faceplate is formed as a spherical convex surface which is curved toward an electron gun.

REFERENCES:
patent: 4804884 (1989-02-01), Vriens et al.
patent: 4899080 (1990-02-01), Vriens et al.
patent: 2003/0034727 (2003-02-01), Okada et al.
patent: 2004/0217686 (2004-11-01), Asano et al.
patent: 61068841 (1986-04-01), None
patent: 62090822 (1987-04-01), None
patent: 63195931 (1988-08-01), None

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