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US 2018/0003981 A1Published application
Near-to-eye display device with spatial light modulator and pupil tracker
AssigneeCY Vision Inc.
InventorHakan Urey
Life of this patent
Estimating the term…
Abstract
A near-to-eye display device includes a spatial light modulator, a rotatable reflective optical element and a pupil-tracking device. The pupil-tracking device tracks the eye pupil position of the user. Based on the data provided by the pupil-tracking device, the reflective optical element is rotated such that the light modulated by the spatial light modulator is directed towards the user's eye pupil.
Claims23
A near-to-eye display device, wherein the near-to-eye display device when in use is less than 25 cm from a user's eye, the near-to-eye display device comprising:
- a computer unit;
- a plurality of point light sources;
- a spatial light modulator (SLM), wherein light produced by at least one of the plurality of point light sources illuminates the SLM and gets modulated to produce modulated light, and the modulated light is directed on an exit pupil plane that includes a useful portion;
- a reflective optical element rotatably mounted to the near-to-eye display device and positioned to be illuminated by light from the at least one point light source to project light on an exit pupil plane positioned at an expected location of a user's eye pupil when the near-to-eye display device is in use, wherein rotation of the reflective optical element causes the useful portion to move within the exit pupil plane;
- a pupil-tracking device to determine a position of the user's eye pupil;
- and
- an actuator to orient the reflective optical element to a selected orientation, wherein the computer unit activates one or more of the plurality of point light sources and selects the selected orientation in response to the determined position of the user's eye pupil.
4 more elements
A method comprising:
- tracking the location of a user's eye pupil;
- rotating a spatial light modulator that produces multiple diffraction orders so that a single diffraction order enters the user's eye pupil;
- illuminating the spatial light modulator using a first light source;
- and
- measuring an angle, and driving the spatial light modulator with different data to change the diffraction order that enters the user's eye pupil for angles above a threshold.
2 more elements
A method comprising:
- tracking the location of a user's eye pupil;
- rotating a spatial light modulator that produces multiple diffraction orders so that a single diffraction order enters the user's eye pupil;
- illuminating the spatial light modulator using a first light source;
- and
- measuring an angle, and selecting a different second light source to illuminate the spatial light modulator based on the angle.
2 more elements
Dependencies are inferred from the claim text.