An imager apparatus and methods are described. An embodiment of an imager module includes a plurality of groups of optical lenses, a lens frame, and at least one associated lens barrel configured to position and hold the plurality of groups of optical lenses. At least one of the groups of optical lenses...http://www.google.com.au/patents/US7795577?utm_source=gb-gplus-sharePatent US7795577 - Lens frame and optical focus assembly for imager module
