Patent ID: 9069180
Filing Date: 2015-06-30
Classification: G02B,G02F,H04N

Abstract:
1. A light-guide, compact imaging optical system, comprising: at least one display light source for producing light waves; an optical device composed of a light-waves transmitting material for collimating light waves, the device having at least one light-waves entrance surface, at least two light-waves exit surfaces and a plurality of external surfaces; at least two retardation plates each one carried by the optical device on at least a portion of an external surface of the plurality of external surfaces; at least one light-waves polarizing beamsplitter disposed at an angle to the at least one of the light-waves entrance or exit surfaces; at least two light-waves collimating components, each one covering at least a portion of at least one of the retardation plates; at least two light-transmitting substrates, each substrate having at least two major surfaces parallel to each other, edges, light-waves input aperture and at least one partially reflecting surface located in one of the substrates; and at least one optical element for coupling light-waves from the optical device into the substrates by internal reflection; wherein the display light source is positioned adjacent to the entrance surface of the optical device for producing image light-waves to be coupled through the entrance surface into the optical device, and the input aperture of the light-transmitting substrates are positioned adjacent to an exit surface of the optical device.