| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser ignition device capable of optionally changing an ignition position in a combustion chamber of an engine for a vehicle. SOLUTION: The laser ignition device has a cylindrical case 10; a laser unit 20 enclosed in the case 10 and emitting laser beams; an electronic shutter 30 disposed on an optical axis of the laser beams and transmitting or intercepting the laser beams; a condensing lens 60 for condensing laser beams irradiated from the laser unit 20; a pedestal 50 formed in hollow cylinder shape and fixing the condensing lens 60 inclined at a desired angle to a plane perpendicular to the optical axis of the laser beams; and a superconductive motor 40 for rotating the pedestal 50 around the optical axis of the laser beams. The condensing lens 60 is fixed to the pedestal 50 being inclined so that a diameter of a circle described by the focal points of laser beams by the rotation of the condensing lens 60 is at least 3.5 mm. COPYRIGHT: (C)2006,JPO&NCIPI
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