Patent ID: 7154673
Filing Date: 2006-12-26
Classification: B23K,H01L

Abstract:
1. A light illuminating apparatus comprising first radiating means of an optical structure having one or more light separating surface for transmitting and reflecting a light beam for splitting the light beam into a transmitted light beam and a reflected light beam, said first radiating means routing a sole light beam incident thereon through said one or more light separating surface to generate n light beams, where n is a natural number not less than two; second radiating means of the same optical structure as said first radiating means, said second radiating means routing a sole light beam incident thereon through said one or more light separating surface to generate n light beams; and light synthesizing means for synthesizing one light beam each of said n light beams radiated by said first radiating means so as to be incident on the light synthesizing means, and one light beam each of said n light beams radiated by said second radiating means so as to be incident on the light synthesizing means, to generate n light beams; said light synthesizing means synthesizing an m'th light beam, generated by said first radiating means, and an (n−m+1)st light beam, generated by said second radiating means, on one and the same axis, provided that the n light beams generated by said first radiating means and the n light beams generated by said second radiating means are ranked from a rank 1 to a rank n in the increasing order of optical path lengths of said n light beams resulting from transmission and reflection along passageways of generation of said light beams, m being an optional number from 1 to n.