| 摘要 |
PURPOSE:To indicate the mount position by providing the first mirror and the second mirror having rotary shaft centers at positions perpendicular to each other and changing the rotation angles of the first mirror and the second mirror. CONSTITUTION:When a switch is turned on, a control circuit 17 is operated, predetermined pulse trains are output to motor drive circuits 19, 20 according to a program, pulse motors 7, 11 are rotated, and the first mirror 5 and the second mirror 6 are set to predetermined rotation angles theta1, theta2 respectively. On the other hand, after the switch is turned on, the emitter of a light source 13 illuminates, the spot light is radiated to the first mirror 5 and is reflected here. The reflected light is radiated to the second mirror 6 and is again reflected here, and this reflected light is radiated to an illuminated member 2 to indicate the mount position. Accordingly, any position of the illuminated member can be radiated by only changing the rotation angles theta1, theta2 of the first mirror 5 and the second mirror 6.
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