SCREEN ADJUSTING JIG

摘要

PURPOSE:To adjust accurately a screen by arranging a screen adjusting board on the upper part of a diffused light source and fixing the position of an eye of a worker checking the adjustment of the screen. CONSTITUTION:A light is enlarged and projected to the front surface of the screen 9 by a projection lens 6. The worker 11 can observe the part of a light band similar to the part 17 of a bright light band. the light band part similar to the light band part 17 is positioned on the center of the screen 9 and two lenticular lens are adjusted so that the light band is not inclined right or left. Since the diffused light source formed by an electric lamp 1 and ground glass 4 and the position of the screen 9 are fixed by the screen adjusting board 8, the position of the right eye 12 of the worker 11 checking the adjustment is fixed by an adjustment checking hole 10 arranged so that a straight line connected to the diffused light source is vertical to the screen, so that proper screen adjustment can be attained.