| 摘要 |
A projection cathode-ray tube comprises a vacuum vessel (10) having a face plate (7), an interference thin film (20) on the inner surface of the face plate, a phosphor layer (8) on the interference thin film, a metal-back film (9) on the phosphor layer and an electron gun within the vessel. More than 30% of the total luminous flux from an emission point in the phosphor layer to which the electron beam of the electron gun is applied exists within a divergent angle of +/- 30 DEG in the direction normal to the face plate.
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