JP2018102793A5 - - Google Patents

Claims (5)

A pair of resonant mirrors forming a resonator;
A laser rod and a Q switch disposed between the pair of resonant mirrors;
An excitation light source that emits excitation light for exciting the laser rod,
An auxiliary light source that emits auxiliary light for artificially changing the initial transmittance of the Q switch;
An auxiliary light optical system that irradiates the auxiliary light to the Q switch;
Counting means for counting the number of pulses of laser light intermittently output from the resonator while the excitation light is on,
Lighting control means for controlling lighting of the excitation light based on the count result of the counting means,
An irradiation optical system that irradiates a laser beam output from the resonator to a patient's eye,
An ophthalmic laser treatment apparatus comprising: An ophthalmic laser treatment apparatus according to claim 1,
The lighting control means turns off the excitation light when the counting means counts three pulses,
An ophthalmic laser treatment apparatus, characterized in that: An ophthalmic laser treatment apparatus according to claim 1 or 2,
The irradiation optical system includes a beam expander and an objective lens,
The beam expander enlarges the beam diameter of the laser light output from the resonator,
The objective lens focuses the laser beam whose luminous flux diameter has been enlarged by the beam expander,
An ophthalmic laser treatment apparatus, characterized in that: An ophthalmic laser treatment apparatus according to any one of claims 1 to 3,
The excitation light source is a flash lamp;
An ophthalmic laser treatment apparatus, characterized in that: An ophthalmic laser treatment apparatus according to any one of claims 1 to 4,
The auxiliary light source is a laser diode, or a vertical cavity surface emitting laser,
Ophthalmic laser treatment apparatus characterized by.