| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain stable laser light. <P>SOLUTION: An optical system used with a laser device 3 may include: a light condensation optical system having at least one focus point and condensing laser light output from the laser device 3; a beam splitter 100 disposed between the light condensation optical system and the at least one focus point of the light condensation optical system; and an optical sensor 110 disposed on a light path of the laser light split by the beam splitter 100. <P>COPYRIGHT: (C)2012,JPO&INPIT |
