| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light irradiation device capable of effectively suppressing unevenness of brightness on a workpiece surface and suitably performing non-shadow lighting or the like even with a simple configuration. <P>SOLUTION: A light irradiation device comprises: an observation hole which is provided between a workpiece of a product or the like, which is a light irradiation object, and an external observation point, on an observation axis connecting them; a first light source section provided around the observation hole, for irradiating the workpiece with light; a half-mirror provided obliquely with respect to the observation axis on a position facing the observation hole on the external observation point side; a second light source section provided at a position where light emitted therefrom is reflected by the half-mirror and irradiated to the workpiece through the observation hole; and a transparent member engaged into the observation hole. <P>COPYRIGHT: (C)2013,JPO&INPIT |
