| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an illuminator by which uniform illuminance distribution is obtained on an illumination object even if the illuminance distribution of light emitted from a light source is asymmetric. <P>SOLUTION: The illuminator 1 includes the light source 2 emitting light having asymmetric illuminance distribution, and an illuminance uniformizing optical system 6. The illuminance uniformizing optical system 6 includes a first multi-integrator 4 dividing the light from the light source into a plurality of luminous fluxes, and a second multi-integrator 5 superposing at least a portion of the plurality of luminous fluxes on the illumination object 12. A lens, on which the luminous flux with relatively low illuminance is incident, out of a plurality of lenses constituting the second multi-integrator 5, is decentered so that an illumination area with the luminous flux emitted from the lens may be deviated to an area side where the illuminance is low on the illumination object 12. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
