Using freeform optics for augmented or virtual reality

Abstract

Configurations are disclosed for presenting virtual reality and augmented reality experiences to users. The system may comprise an image-generating source to provide one or more frames of image data in a time-sequential manner, a light modulator configured to transmit light associated with the one or more frames of image data, a substrate to direct image information to a user's eye, wherein the substrate houses a plurality of reflectors, a first reflector of the plurality of reflectors to reflect transmitted light associated with a first frame of image data at a first angle to the user's eye, and a second reflector to reflect transmitted light associated with a second frame of the image data at a second angle to the user's eye.

What is claimed is: 
     
         1 . A system comprising:
 a fiber scanning display to project light associated with one or more frames of image data, wherein the fiber scanning display is configured to deliver the light to a first free form optical element; and   a first freeform reflective and lens optical component to increase a size of a field-of-view for a defined set of optical parameters, the first freeform reflective and lens optical component comprising: a first curved surface, a second curved surface, and a third curved surface, the first curved surface at least partially optically transmissive and refractive and which imparts a focal change to the light received by the first freeform reflective and lens optical component via the first curved surface, the second curved surface which at least partially reflects light received by the second curved surface from the first curved surface toward the third curved surface and which passes light received by the second curved surface from the third curved surface, the third curved surface which at least partially reflects light out of the first freeform reflective and lens optical component via the second curved surface.   
     
     
         2 . The system of  claim 1 , wherein the freeform optic is a TIR freeform optic. 
     
     
         3 . The system of  claim 1 , wherein the freeform optic has non-uniform thickness. 
     
     
         4 . The system of  claim 1 , wherein the freeform optic is a wedge optic. 
     
     
         5 . The system of  claim 1 , wherein the freeform optic is a conic. 
     
     
         6 . The system of  claim 1 , wherein the freeform optic corresponds to arbitrary curves. 
     
     
         7 . The system of  claim 1 , further comprising an accommodation tracking module to track an accommodation of a user's eyes. 
     
     
         8 . The system of  claim 7 , wherein the focal change is based at least in part on the tracked accommodation 
     
     
         9 . The system of  claim 1 , further comprising a compensating lens placed proximate to the first freeform reflective. 
     
     
         10 . The system of  claim 1  implemented as a method.