| 摘要 |
PURPOSE:To simply an exposing process by using a rectangular static exposing light source with a light source length selectd at predetermined times of a light source diameter to expose a matrix hole or a phosphor dot. CONSTITUTION:A pair of shield plates 12 separated by a distance 1 are provided at a predetermined position of a mercury lamp 11 with a light source diameter A to make up a rectangular light source having the light source diameter A and the light source length 1. The ratio of the light source length to the light source diameter 1/A is made 1-1.3. This rectangular light source is used to expose a matrix hole or a phosphor dot. Thereby, a complex mechanism such as a rotary light source is not needed for use, and the exposing process can be simplified. |
