The present invention provides an apparatus and method for free-space optical communication. The apparatus includes a first board with a plurality of optoelectronic converter components mounted on the first board. The apparatus additionally includes at least one optics element optically aligned with...http://www.google.de/patents/US7106973?utm_source=gb-gplus-sharePatent US7106973 - Apparatus and method for use in free-space optical communication comprising optically aligned components integrated on circuit boards