Patent ID: 6246170
Filing Date: 2001-06-12
Classification: H01J

Abstract:
A light source apparatus comprising:a spherical body part formed with a transparent material and having an outer wall and an inner wall; anda light emitting part having a light emission center located within a space surrounded with the inner wall of said spherical body part,wherein a light flux emitted from said light emitting part is radiated in a predetermined direction through said spherical body part, and said light source apparatus satisfies the following conditions:D2<Rb1.5.times.D3<Rawhere Ra and Rb are radii of curvature of the outer wall and the inner wall of said spherical body part, respectively, D2 is a distance from the light emission center to the inner wall, and D3 is a radius of a bar-shaped part which holds said spherical body part.