| 摘要 |
PURPOSE: To irradiate partial areas with a single photoconductor in a medically different state by emitting a plurality of independent luminous fluxes having different incident angle at a different outgoing angle. CONSTITUTION: On the photoconductor 2, an incident angle range 10 whose center is conical with the center angle β is formed coaxially to an axial line 4 and an incident angle range 12 surrounding the range 10 in a shape of a ring is formed outside the range 10. A convergent luminous flux 14 and the oblique incident luminous flux 16 are made incident on the photoconductor 2 so as to focus on the incident surface 6. Then the luminous flux 14 is emitted from an axially symmetrical outgoing angle range 18, on the other hand, the oblique incident luminous flux 16 is emitted from an emitting range 20. Thus, partial areas 22 and 24 are irradiated with a plurality of luminous fluxes 14 and 16 having no relation with each other with different emitting characteristics and also different wavelength, then, the fluxes is used medically effectively. |
