H - Electricity – 01 – J
Patent
H - Electricity
01
J
313/35.34
H01J 29/18 (2006.01) H01J 29/82 (2006.01) H01J 31/12 (2006.01)
Patent
CA 1180370
- ABSTRACT OF THE DISCLOSURE An article of manufacture is disclosed for use in a projection television system. A cathode ray picture tube has a face panel with a rearwardly extending skirt and a window for receiving a cathodoluminescent imaging screen. The tube has a seal land which defines a plane whose normal makes a non-zero acute angle with respect to the axis of said window. The article is for use in a system having a cathode ray picture tube whose projection optical axis is on the axis of a remotely located viewing screen, and at least one displaced axis cathode ray picture tube; that is, a tube whose projection optical axis is displaced from the axis of the viewing screen by a non-zero acute angle. The method provides for compensating for the non-linear magnification distortion of the projected image caused by the displacement of the tube off the viewing screen axis. The method also provides for the forming of the face panels and funnels of both the on-axis tube and the displaced axis tube by one pair of glass molds.
378192
Macrae & Co.
Zenith Radio Corporation
LandOfFree
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