Patent number: 6798579

Real imaging system with reduced ghost imaging

Original Assignee: Optical Products Development Corp.

Field of technology: Optics

Patent granted on: Tue, 28 Sep 2004

Patent drawing

Abstract

A real image display system includes a primary image source for projecting a primary image from the start of a primary light path to an end of the primary light path at which the primary image is viewable, two reflectors positioned in the primary light path between the primary image source and the projected real image, a circular polarizer for circularly polarizing a light beam positioned in the primary light path between the mirror and real image, whereby outside light entering the system is substantially blocked before exiting the system, thereby substantially eliminating ghost image formation caused by outside light sources.