CPC G09G 3/002 (2013.01) [G02B 5/3016 (2013.01); G02B 27/286 (2013.01); G06F 1/163 (2013.01); G06F 3/013 (2013.01); G09G 2320/08 (2013.01); G09G 2340/045 (2013.01); G09G 2340/0407 (2013.01); G09G 2354/00 (2013.01)] | 18 Claims |
1. A device, comprising:
a display including multiple pixels, each pixel having an optical emitter to provide at least one light beam from an image;
an optical element configured to relay multiple light beams from the display to a viewer through an eye box, the eye box limiting an area that includes a pupil of the viewer;
a varifocal assembly configured to direct, through the eye box, one of a first group of light beams having a first polarization state and one of a second group of light beams having a second polarization state, according to a desired mode of operation of the device, wherein the first group of light beams forms a first field of view of the image in a focused mode of operation of the device, and the second group of light beams forms a second field of view of the image in an immersive mode of operation of the device, wherein the varifocal assembly includes a thin film formed on a surface of the optical element, the thin film including a liquid crystal polymer having a three-dimensional pattern configured to provide, in each point of a cross section perpendicular to a propagation direction, a first phase delay for the first group of light beams and a second phase delay for the second group of light beams; and
a planar waveguide configured to relay the at least one light beam through the eye box.
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9. A method, comprising:
determining a desired mode of operation for a headset configured to provide an image to a viewer;
generating, with a display including multiple optical emitters, wherein each optical emitter forms a pixel in the display, multiple light beams forming the image;
relaying, with an optical element, the light beams from the display to the viewer through an eye box that delimits an area enclosing a pupil of the viewer; and
selecting, via a varifocal assembly, one of a first group of light beams or a second group of light beams to be directed through the eye box, based on the desired mode of operation, wherein the first group of light beams forms a first field of view of the image in a focused mode of operation, and the second group of light beams forms a second field of view of the image in an immersive mode of operation, wherein selecting a first group of light beams or a second group of light beams comprises providing, in each point of a cross section perpendicular to a propagation direction, a first phase delay for the first group of light beams and a second phase delay for the second group of light beams in a thin film formed on a surface of the optical element, the thin film having a liquid crystal polymer formed into a three-dimensional pattern.
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