Patent ID: 7178923
Filing Date: 2007-02-20
Classification: F21S,F21Y,G02B,G03B,H04N

Abstract:
1. An illumination apparatus illuminating an objective illumination region, comprising: a plurality of illuminants having light-emitting surfaces radiating diffused light, and arranged on a circumference of a circle; a plurality of first optical members each including a first incident end surface on which the diffused light radiated from a light-emitting surface is made incident, a first reflecting surface configured to reflect and guide the diffused light incident from the first incident end surface, and a first outgoing end surface configured to output the guided diffused light, and each being disposed to be fixed to a respective one of the plurality of illuminants; and a second optical member configured to rotate around an axis running through the center of the circumference as a rotation center, and guide the diffused light output from the plurality of first outgoing end surfaces, to illuminate the objective illumination region.