| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a laser ignition device having excellent mountability on an engine and excellent reliability and safety, and to provide a control method of the laser ignition device. <P>SOLUTION: The laser ignition device 100b includes as a laser output detecting means 3b, an optical element 30b refracting an advance direction of the returned light REF<SB POS="POST">PLS</SB>of a pulse laser LSR<SB POS="POST">PLS</SB>emitted from a laser oscillator 41 and a returned light detecting sensor 31 detecting the pulse laser returned light REF<SB POS="POST">PLS</SB>refracted by the optical element 30b, and includes, as an excited light source deterioration detecting means 3b, an optical element 30b refracting a partial advance direction of an excited laser LSR<SB POS="POST">PMP</SB>emitted from a semiconductor laser 2 provided as an excited light source and an excited light detecting sensor 33 detecting a partial REF<SB POS="POST">PMP</SB>of the excited laser LSR<SB POS="POST">PMP</SB>refracted by the optical element 30b. <P>COPYRIGHT: (C)2013,JPO&INPIT |
