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US 5,702,016 AGranted
Braun tube for a projection television receiver
AssigneeGoldstar Co., Ltd.
InventorDug Gyu Jang
Life of this patent
Estimating the term…
Abstract
A Braun tube for a projection television receiver in which homogeneity of luminance in the peripheral portion of a screen is obtained by setting the screen width-to-length ratio to 16:9 with the curvature radius of the long side is less than that of the short side when the fluorescent surface is viewed from the outer circumference of a panel so that the main axis of the light incident to the peripheral portion of the screen is refracted more toward the center portion of the screen than the other portion thereof.
Claims2
A projection television, comprising:
- a screen;
- and
- a Braun tube for a projection television receiver, the Braun tube including a fluorescent surface having a long side and a short side, wherein a curvature radius of the long side of the fluorescent surface is less than a curvature radius of the short side of the fluorescent surface, and wherein the fluorescent surface is convex relative to the interior of the Braun tube.
Dependencies are inferred from the claim text.