| 摘要 |
PROBLEM TO BE SOLVED: To simply adjust the image positions in right and left directions on the screen. SOLUTION: An optical unit 50 with a base block 60 is rotatively mounted on the rotating shaft 70 provided on the bottom frame 11. A compression coil spring 66 is attached to the bottom frame 11 with washers 67, 67 on it both sides by using a pin 65, to push down the base block 60 of the optical unit 50 to the bottom frame 11, with the biasing force of the spring 66. The optical unit 50 is freely rotated while leaving the degree of freedom in the horizontal direction of the unit 50, without rattling in the vertical directions by making the shaft diameter 65b of the pin 65 smaller than the hole 60c of the base block 60. The optical unit 50 is finely rotated, by screwing an adjusting screw 82 into the threaded hole 60b formed on the cylinder 60f. COPYRIGHT: (C)2007,JPO&INPIT
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