Patent ID: 6643077
Filing Date: 2003-11-04
Classification: G02B

Abstract:
An optical assembly comprising:(A) at least one prism which has a top, a bottom, a plurality of sides, and a diagonal which has a top and a bottom, said prism comprising: (i) first and second sub-prisms, each of which has a surface that is parallel to the diagonal, and (ii) a first mechanical reference surface for the top of the diagonal and a second mechanical reference surface for the bottom of the diagonal; and (B) a housing comprising: (i) a plurality of fixed mechanical references, each of which is adapted to engage one of the first mechanical reference surface, the second mechanical reference surface, or a first side of the prism; and (ii) a locking element which engages a second side of the prism and presses the first side and the first and second mechanical reference surfaces against the plurality of fixed mechanical references.