Patent ID: 8798432
Filing Date: 2014-08-05
Classification: B29D,B32B,G02B

Abstract:
1. A method of fabricating an optical wedge configured to transmit light via total internal reflection between a first light interface located at an end of the optical wedge and a second light interface located at a major face of the optical wedge, the method comprising: inserting a wedge blank into a vacuum molding tool; applying a vacuum to the vacuum molding tool to impart a surface profile of the vacuum molding tool to the wedge blank; removing a layer from a top surface of the wedge blank to expose a machined surface of the wedge blank while applying the vacuum to the vacuum molding tool; laminating a finish piece to the machined surface via an adhesive, the finish piece comprising a smoother surface than the machined surface; curing the adhesive to form a finished optical wedge; and removing the finished optical wedge from the vacuum molding tool.