Patent ID: 8066409
Filing Date: 2011-11-29
Classification: A61B,G02B

Abstract:
1. A light source device comprising: a light source lamp for emitting illumination light; a light-condensing device including: a lens holder, a lens protruding from a predetermined side face of the lens holder, for condensing illumination light emitted from the light source lamp, and at least one lens holding member fixed to the predetermined side face of the lens holder for holding the lens such that an optical axis of the lens aligns with an optical axis of the illumination light; and a rotary filter unit comprising: a rotary plate provided with a plurality of optical filters to be placed in the optical path of the illumination light, a rotary driving portion that rotates the rotary plate, and a forward and rearward driving portion that is capable of moving the rotary plate forward and rearward in a direction perpendicular to the illumination light path, wherein the lens holder of the light-condensing device is provided with a hole in the predetermined side face, which defines a rotary plate disposing space portion in which the rotary plate is removably disposed when said plate is moved by the forward and rearward driving portion along the direction perpendicular to the illumination light path.