| 摘要 |
<p>Light irradiates readily and reliably with uniform illuminance over an entire irradiation area even if an area of an irradiation subject is large and even after lamp replacement. For each optical system, a lamp light source and an optical filter, which are capable of controlling the light amount, are provided. The irradiation area of the irradiation subject is assumed to be divided into a plurality of areas to be constituted as a plurality of small irradiation areas. Further, the light guiding members of the optical systems correspond to respective ones of the plurality of small irradiation areas, and the plurality of optical systems emit light onto the entire irradiation areas.</p> |
