초록 ▼

A phototherapeutic apparatus in which a light beam is projected from a therapeutic light source on the therapeutic region of a patient by a spot size regulator in which selection can be made from a plurality of illuminating fiber optic elements of different diameters for coarse regulation and optica

A phototherapeutic apparatus in which a light beam is projected from a therapeutic light source on the therapeutic region of a patient by a spot size regulator in which selection can be made from a plurality of illuminating fiber optic elements of different diameters for coarse regulation and optical magnification can be varied for fine regulation.

대표청구항 ▼

A phototherapeutic apparatus comprising: a therapeutic light source for projecting light beams of a selected spot size onto a therapeutic region of a patient; spot size regulating means located between said light source and the therapeutic region for regulating the spot size of the light beams proje

A phototherapeutic apparatus comprising: a therapeutic light source for projecting light beams of a selected spot size onto a therapeutic region of a patient; spot size regulating means located between said light source and the therapeutic region for regulating the spot size of the light beams projected onto the therapeutic region; said regulating means including coarse regulating means for effecting a coarse stepwise change in the spot size and fine regulating means for effecting a fine adjustment in the spot size; said coarse regulating means being provided adjacent said light source and including a plurality of illuminating fiber optical elements having different emitting end diameters respectively and means for selecting one of said fiber optical elements so that the light beams from said light source are passed through and emitted from the emitting end of the selected one of the fiber optical elements, whereby said emitting end of said selected fiber optical element functions as a secondary light conduit whose size is determined by the diameter of said emitting end; said fine regulating means being located between said coarse regulating means and the therapeutic region and including a variable magnification optical system for projecting and imaging the light beams from said emitting end of the selected one of the fiber optical elements onto the therapeutic region, said magnification optical system having a range of magnification change which is sufficient to substantially cover the differences between emitting end diameters of the fiber optical elements which are adjacent to each other.