Patent ID: 6575580
Filing Date: 2003-06-10
Classification: G02B,G02F

Abstract:
A lighting system comprising:converging means for converging a light emitted from an illuminant and forming a converged image of said illuminant at a predetermined position; a light mixing element for having an end face of incidence near the position at which said converged image of said illuminant is formed, and reducing an irregular luminance of said converged image of said illuminant incident on said end face of incidence to form a uniform light source face on an end face of emergence; and an optical system for transmission for directing an illuminating light flux from the plane of light emergence onto the illuminated face side of a light bulb in a non-telecentric state, a first lens group and a second lens group being arranged in order from said light mixing element side to the illuminated face side of said light bulb, in which a first optical conjugate relation exists between the end face of incidence of said light mixing element and a virtual face at a position of a aperture stop disposed in the vicinity of a lens means final face closest to the illuminated face constituting said second lens group in terms of said first lens group and said second lens group, and a second optical conjugate relation exists between the end face of emergence of said light mixing element and said illuminated face.