An optical imaging system incorporates a beam splitter, which is moveable to a beam-splitting position where the beam splitter intercepts the light on an input optical path and a non-beam-splitting position where the beam splitter is located outside of the input optical path. The beam splitter includes...http://www.google.fr/patents/US7369315?utm_source=gb-gplus-shareBrevet US7369315 - Beam splitter and optical imaging systems incorporating same
Beam splitter and optical imaging systems incorporating same