Patent 7502537 was granted and assigned to Panasonic on March, 2009 by the United States Patent and Trademark Office.
A fiber-bundle disclosed has: a bundle of a plurality of optical fibers each receives a light beam in one end and emits the light beam from the other end; and an adjuster to adjust positions of a plurality of optical fibers. The configuration can realize a wide variety of irradiation patterns easily and freely.