| 摘要 |
A light quantity correction filter that can implement the desired transmittance distribution precisely and easily without complicating an exposure system, a method of making the light quantity correction filter, and a method of manufacturing a color cathode ray tube using the light quantity correction filter are provided. The method of making the light quantity correction filter comprises providing in an evacuated container an evaporation source, a transparent substrate on which material from the evaporation source is to be deposited to form a light quantity correction filter and an evaporation amount distribution controlling sheet that has a plurality of openings and is disposed between the evaporation source and the transparent substrate, evaporating material from the evaporation source for deposition on the transparent substrate, and controlling the amount of evaporated material deposited on the transparent substrate with the distribution controlling sheet to provide a desired transmittance distribution of evaporated material on the transparent substrate.
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