IN-LINE OPTICAL ANAMORPHIC BEAM EXPANDER/CONTRACTOR

摘要

An in-line anamorphic light beam expanding/contracting device utilizing two prisms (1, 3) and a planar mirror surface. The planar mirror (2) surface reflectively directs the optical path of a light beam between the two prisms and the prisms provide light beam expansion by refracting. The device allows for a diminutive device which is especially useful in computer peripheral optical data storage equipment.