| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a laser treatment apparatus constituted to suppress surge pulses of a treatment laser beam. <P>SOLUTION: The laser treatment apparatus includes: a laser beam source for emitting a fundamental wave laser beam; a laser beam source driving means for controlling an electric current applied to the laser beam source to pulse-drive the laser beam source so as to emit the fundamental wave laser beam of a set pulse width; a wavelength conversion element for converting the fundamental wave laser beam to a second harmonic laser beam; an output setting means for inputting the set signal of the output of the second harmonic laser beam; and an irradiation optical system for irradiating the eye of a patient with the second harmonic laser beam. The laser treatment apparatus includes: a temperature regulation unit for regulating the temperature of the wavelength conversion element in order to alter wavelength conversion efficiency; and a control means for controlling driving of the laser beam source driving means so as to set the lower limit of the output range of the fundamental wave laser beam to a predetermined output threshold value, as well as driving of the temperature regulating unit so as to obtain the second harmonic laser beam of the output set by the output setting means. <P>COPYRIGHT: (C)2012,JPO&INPIT |
