DEVICE FOR APPLYING LASER RADIATION THERAPY PROVIDED WITH MEANS FOR CORRECTING POWER OF INCIDENT LASER RADIATION ON BIOLOGICAL TISSUE

摘要

FIELD: medical engineering. SUBSTANCE: device has a group of lasers operating on various wavelengths. Each laser has control unit and photoelectric witness transducer operating in its proper optical channel. Radiation flows from all lasers are directed to photometric cavity common for all lasers via conversion unit. Main outlet aperture of the cavity has movable cover with a surfaces having diffuse reflection coefficient Krefl equal to 100%. Main photoelectric transducer is mounted in auxiliary outlet aperture which output is connected to laser radiation adjustment unit. Each photoelectric witness transducer output is connected to the adjustment unit via switchboard. The adjustment unit has elements enabling one to model photoelectric transducer responses to both introducing and removing cover surface having Krefl equal to 100% into the cavity and removing the cover for creating Krefl=0% conditions in the unit. The response data are saved and taken into consideration for correcting each laser power. The device also has launching unit, timer unit, a group of multi-lead blocks and programming unit for switching lasers over in automatic sequential key mode for coordinating operation in combination with the photometric cavity and correcting unit in sequentially calibrating the device at each operative radiation wavelength. Operation in this mode being over, the device starts operating in automatic power adjustment mode dealing with each component of common laser radiation flow on all wavelengths. EFFECT: accelerated adjustment procedure; high accuracy in setting dose. 3 dwg