Cathode ray tube with cone having non-circular cross-section

Details Cathode ray tube with cone having non-circular cross-section Cathode ray tube with cone having non-circular cross-section

2007-07-10

2007-07-10

Santiago, Mariceli (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Envelope

C220S00210A, C220S00210R

Reexamination Certificate

active

11141379

ABSTRACT:
When we let the aspect ratio of the fluorescent screen of a cathode ray tube be M:N and, in a coordinate system in which the origin is a point on the tube axis and the horizontal axis and vertical axis intersect at right angles, when we let LA be the horizontal radius of the outer surface of a cone component4, SA be the vertical radius, and θ be the angle formed by a horizontal axis H and an axis D in the direction of the maximum diameter on the inner surface of the cone component4, then when the position Z on the tube axis, using as its origin a reference line position that serves as a reference for a deflection angle, is within a range of −30 mm≦Z≦10 mm, a portion is included such that the angle θ and the values of M, N, LA(Z), and SA(Z) satisfy the relational formula θ=tan−1[(N/M)×(LA(Z)/SA(Z))].

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