| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To quickly change over a transmitting state of transmitting a laser beam emitted from a laser oscillator and an intercepting state of intercepting the laser beam. <P>SOLUTION: A laser shutter unit 1 changes over the transmitting state of transmitting a laser beam L emitted from a laser oscillator 20 and the intercepting state of intercepting the laser beam L. The laser shutter unit 1 includes a first reflection mirror 10a for reflecting a part of the laser beam L emitted from the laser oscillator 20 and with a second reflection mirror 10b for reflecting the remainder of the laser beam L. In the transmitting state, the first and the second reflection mirror 10a, 10b are situated in a position not reflecting the laser beam L. In the intercepting state, the first reflection mirror 10a is situated in a position reflecting a part of the laser beam L and the second reflection mirror 10b is situated in a position reflecting the remainder of the laser beam L. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
