The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 2003
Filed:
Mar. 29, 2001
Shinji Okamori, Tokyo, JP;
Shinsuke Shikama, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A lighting system comprising converging means ( ) for converging a light emitted from an illuminant to form a converged image, a light mixing element for having an end face of incidence near the position at which the converged image is formed, and reducing an irregular luminance of the converged image of the illuminant 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 in a non-telecentric state, a first lens group and a second lens group being arranged in order from the light mixing element side to the illuminated face side of a light bulb, in which a first optical conjugate relation exists between the end face of incidence of the 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 the second lens group in terms of the first lens group and the second lens group, and a second optical conjugate relation exists between the end face of emergence of the light mixing element and the illuminated face