Patent ID: 8033673
Filing Date: 2011-10-11
Classification: G02B

Abstract:
1. An illumination device that-illuminates an object disposed on an optical axis of an imaging device in a direction angled relative to the optical axis when the imaging device captures an image of the object, the illumination device comprising: a light emitter that emits light; and an optical unit including a plurality of optical members that are fixed at relative positions, wherein the light emitter is fixed at a position and emits the light in a direction away from the optical axis of the imaging device, the entire optical unit moves relative to the light emitter in a direction intersecting the direction in which the light emitter emits the light, the optical unit internally reflects light so as to irradiate the light at different angles depending on a moved amount thereof relative to the light emitter, and at least one of the optical members reflects light at different angles depending on a light incident position.