Collimating microlenses are "printed" from optical polymeric materials on the ends of optical fibers using ink-jet technology. In one embodiment the optical fibers are inserted into a collet, a stand-off distance from the open upper end of the collet. The open upper end is filled with optical fluid and...http://www.google.se/patents/US6625351?utm_source=gb-gplus-sharePatent US6625351 - Ink-jet printing of collimating microlenses onto optical fibers
