| 摘要 |
<P>PROBLEM TO BE SOLVED: To maintain an irradiative light quantity as a constant by detecting irradiative light quantity variations correctly, even if whether they happen due to the light quantity of a lamp or the variations of distribution pattern of light quantity. <P>SOLUTION: When light of the lamp (4) is emitted from a light exit port (6) by focusing light with a reflecting mirror (5) to irradiate toward irradiated objects directly or indirectly, in a light quantity monitor (M) detecting irradiative light quantity irradiating toward irradiated objects and a light source apparatus (1) equipped with a light quantity controller (7) controlling in feedback manner the irradiative light quantity depending on the detected light quantity, the light quantity monitor (M) consists of a light guide rod (8) as an optical path for leading light focused with the reflecting mirror (5) toward the light exit port (6); and of an optical sensor (9) detecting the leaked light quantity from the peripheral surface (8a) of the light guide rod (8) as the irradiative light quantity. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
