| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a small discrimination apparatus for irradiating a phosphor with exciting light beams of different wavelengths. <P>SOLUTION: The discrimination apparatus has a current-driven light emission means (10, 11) for emitting a first light beam, and a light receiving means (15, 16) for processing as an electric signal a second light beam emitted from the phosphor by the first light beam. The light emission means is designed to emit a light beam whose central wavelength is made different by the shift of a driving current value as the first light beam. <P>COPYRIGHT: (C)2009,JPO&INPIT |
