Light source device for endoscope using DMD

A light source device used in an endoscope device comprising:

• a light source lamp, arranged at a predetermined position in the light source device, for generating light supplied to an endoscope;
• a mirror device which uses a silicone chip as a base, which is arranged on an optical path of the light in the light source device, and which has reflective surfaces formed by a plurality of micromirrors for receiving the light,
• the micromirrors being movable in a predetermined angular range;
• a receptacle to which a light guide for transmitting the light to an object to be photographed is connected, and which has a face on a proximal side of the light guide arranged at a predetermined position in the light source device;
• an optical system which is arranged on an optical path of reflected light from the micromirrors from the light generated by the light source lamp when the angles of the micromirrors are at a predetermined position, and which directs the reflected light to the end on the proximal side of the light guide,
• the optical system forming an optical positional relationship between the micromirrors and the face on the proximal side of the light guide;
• a light adjustment circuit for outputting an adjustment signal for adjusting the light incident on the optical system;
• a mirror device drive circuit for outputting a drive signal for setting each of the micromirrors formed in the mirror device at a position on the basis of the adjustment signal output from the light adjustment circuit,
• the mirror device drive circuit operating the plurality of micromirrors at an angle at which at least some reflected light by the micromirrors from the light generated by the light source lamp is incident on the optical system and an angle at which the reflected light is not incident on the optical system.