Device for therapeutical irradiation of organic tissue by laser radiation
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United States of America Patent
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Jun 6, 1989
Grant Date -
N/A
app pub date -
Oct 1, 1987
filing date -
Feb 3, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The device comprises an HeNe laser (1), which emits on a wavelength of 633 nm and a second laser (5) emitting in the near-infrared range. This second laser (5) has a continuous-wave operation and emits radiation in the 800-870 mn wavelength range, preferably on an 840 nm wavelength. An optical system (14, 15) serves to widen the beams of the two lasers (1, 5) which follow the same beam path. This system (14, 15) allows continuous adjustment of the size of the field irradiated up to a maximum diameter of the order of 30 mm. For beam switching between the lasers (1, 5) and the beam outlet opening of the device, a mirror system (11, 18) is provided which comprises an outer mirror rotatable around two axes for positioning the irradiation field.
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