| 摘要 |
PURPOSE:To improve the unevenness of exposure in a shutter moving direction by inclining a slit in the same direction as the curved surface of a panel or forming the difference in level to effectively widen the slit width according to the movement of a zone shutter from the center to the short axis end. CONSTITUTION:A slit plate 2 is moved by sliding slide bars 3, 4 fixed to slide short side walls along guide rails 5, 6. The slit plate 2 is inclined with a pin 11 which is fitted to a slide groove 9 of a rotating arm 8 installed in the short side wall 7 and fixed to an exposure table with a plate 10. The slit plate 12 is inclined, and the inclined angle thetaA of an arm 13 is equal to the inclined angle thetaS of the slit plate, and the inclined angle is adjusted by adjusting the height H by moving the position of the pin 11. The amount of transmitted light is increased with the movement of the slit from the center to the periphery. Thereby, the unevenness of exposure in the center and in the periphery caused by a difference in illuminance distribution can be eliminated.
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