DELIVERING LIGHT RAYS ASSOCIATED WITH VIRTUAL IMAGES BASED ON USER ACCOMMODATION
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.
1 . A method for displaying virtual content to a user, the method comprising:
determining an accommodation of the user's eyes;
delivering, through a first waveguide of a stack of waveguides, light rays having a first wavefront curvature based at least in part on the determined accommodation, wherein the first wavefront curvature corresponds to a focal distance of the determined accommodation; and
delivering, through a second waveguide of the stack of waveguides, light rays having a second wavefront curvature, the second wavefront curvature associated with a predetermined margin of the focal distance of the determined accommodation.
2 . The method of claim 1 , wherein the margin is a positive margin.
3 . The method of claim 1 , wherein the margin is a negative margin.
4 . The method of claim 1 , wherein the second waveguide increases a focal range in which the user can accommodate.
5 . The method of claim 1 , wherein the first waveguide is coupled to a variable focus element (VFE), wherein the VFE varies a focus at which the waveguide focuses the light rays.
6 . The method of claim 179 , wherein the focus is varied based at least in part on the determined accommodation of the users' eyes.
7 . The method of claim 1 , wherein the first wavefront curvature and the second wavefront curvature are delivered simultaneously.
8 . The method of claim 1 , wherein the first and second wavefront curvatures are perceived as a first and second depth plane by the user.
9 . The method of claim 1 , wherein the waveguide is a diffractive optical element (DOE).
10 . The method of claim 1 , wherein the waveguide is a substrate guided optic (SGO).
11 . The method of claim 1 , wherein the first and second waveguides are switchable.
12 . The method of claim 1 , wherein the waveguide comprises one or more switchable elements.