Patent ID: 6033091
Filing Date: 2000-03-07
Classification: G03B,H04N

Abstract:
A light source device comprising:a reflecting mirror having a light-reflecting surface in the form of a concave surface of revolution;an aperture in said reflecting mirror formed in the vicinity of an axis of revolution of said light-reflecting surface and having a desired shape and size;a lamp provided within said reflecting mirror, said lamp penetrating a center of said aperture;a holding piece for holding said lamp on the axis of revolution of said light-reflecting surface;a first clamp member for clamping said holding piece in the vicinity of the aperture of said reflecting mirror;a second clamp member for clamping said lamp to said holding piece;ventilating means disposed behind said reflecting mirror and ventilating an inside of said reflecting mirror; anda fin mounted on said holding piece and protruding to within said reflecting mirrorwherein said aperture is partially covered by said lamp and said holding piece and functions as a passage through which the air around said lamp flows;said holding piece being sized and positioned to cooperate with the shape and size of said aperture to provide an ventilation passage of desired shape and size.