A rod lens comprises a tubular body having a first end, a second end, a length and a diameter, a first optically transparent closing element, tightly sealing the first end of the tubular body, a second optical transparent closing element, tightly sealing the second end of the body. The rod lens further...http://www.google.fr/patents/US7595935?utm_source=gb-gplus-shareBrevet US7595935 - Rod lens
