Systems and hand pieces for use in ophthalmology or dermatology

摘要

The invention relates to a system for ophthalmology or dermatology, having a laser unit for generating pulsed laser radiation, the pulse length of the laser pulses lying in the femtosecond range, a hand unit for emitting laser radiation generated by the laser unit, and a flexible light waveguide for delivering the laser radiation generated by the laser unit to the hand unit. The invention furthermore relates to a corresponding hand unit for emitting pulsed laser radiation generated by a laser unit, the laser radiation having pulse lengths in the femtosecond range.

主权项

1. A system for ophthalmology or dermatology, comprising:
a laser source unit having a fiber laser oscillator and amplifier for providing pulsed laser radiation having a pulse length in the femtosecond range, the laser source unit further including a pulse stretcher in optical communication with the fiber laser oscillator and amplifier, the pulse stretcher increasing the pulse length of the pulsed laser radiation to above 1 picosecond; a flexible light waveguide optically coupled at a first end to the laser source unit for receiving the pulsed laser radiation having a pulse length above 1 picosecond and guiding the pulsed laser radiation to a second end of the flexible light waveguide; and a hand piece coupled to the second end of the flexible light waveguide, the hand piece receiving the pulsed laser radiation from the flexible light waveguide and outputting a focused laser beam, wherein the hand piece includes:
a transmission grating that compresses the pulse length of the received pulsed laser radiation to the femtosecond range;an electro-optical deflector in optical communication with the transmission grating, the electro-optical deflector functioning without moving parts to deflect the received pulsed laser radiation; andan f-theta objective in optical communication with the electro-optical deflector, the f-theta objective focusing the pulsed laser radiation deflected by the optical deflector onto a working plane.