PROJECTION SYSTEM

摘要

An image projection system includes a liquid crystal on silicon (LCOS) panel (504), a projection lens assembly (505), and a wire-grid PBS (503) disposed to direct at least a portion of source light towards the LCOS panel (504), and to direct a portion of light reflected from the LCOS panel (504) to the projection lens assembly (504). In addition, a field léns (506) and a quarter-wave retarder (507) are optically interposed between the LCOS panel (504) and the wire-grid PBS (503). The insertion of the quarter wave retarder (507) between the LCOS panel (504) and wire-grid PBS (503) helps improve contrast by correcting polarization aberrations otherwise caused by the non­telecentricity of the field lens (506).