| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide uniform light irradiation field having high contrast edge with clear line. <P>SOLUTION: LED light device (100, 150, 170) can be used within X-rays collimator (204) so that X-ray beam (212) may be led on a subject zone (220) on a patient (206) along a prescribed specified axis (214). The collimator is equipped with an LED array (202) and optical condensers (104, 154, 174). The LED array leads the light beam which spreads outward in a cone angle to the prescribed axial direction. The optical condensers have reflection surfaces, and the light beam is released from the LED array in the beam cone angle which is prescribed by the reflection surface. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
