| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a projection light source for generating a more intense arcuate band (than conventional projection light sources) of light with pupil irradiance, symmetrical pupil distribution, uniform numerical aperture, and high telecentricity. <P>SOLUTION: An image dissector is suitably used in combination with a projection light source, and includes an input face, an output face, and plural elements that redirect light from the input face to the output face. The output face has a substantially rectangular shape that is different from that of the input face. At least one of the plural elements has at least one coating that reduces optical transmission efficiency of the one of the plural elements so as to secure substantially uniform irradiance of the output face. <P>COPYRIGHT: (C)2010,JPO&INPIT |
