Patent ID: 6565233
Filing Date: 2003-05-20
Classification: F21V,F21W

Abstract:
A module that produces a beam of projected light comprising:a light source that generates generally parallel light, and a system diffusion optical element; wherein said system diffusion optical element comprises a plurality of discrete individual refractive elements projecting from a surface of said system diffusion optical element, said refractive elements being non-continuous along any axis of said system diffusion optical element such that said individual refractive elements bend a source light beam generated by said light source in all directions around a centerline of a light path to create a homogeneously diffused projected light beam, and at least one filter element is provided in said module, said filter element being positioned so that it can be selectively introduced into a path of said source light beam, and when said at least one filter element is introduced to any part of said path of said source light beam, a quality produced by said filter element is imbued to the entire said projected light beam.