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Accommodation based optical correction

  • US 10,379,356 B2
  • Filed: 04/07/2017
  • Issued: 08/13/2019
  • Est. Priority Date: 04/07/2016
  • Status: Active Grant
First Claim
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1. A head mounted display (HMD) comprising:

  • at least one processor;

    an electronic display element configured to display a virtual scene to a user wearing the HMD;

    an optics block configured to direct light from the electronic display element to an exit pupil of the HMD;

    an eye tracking system configured to determine an eye position of each eye of the user; and

    memory including instructions that, when executed by the at least one processor, cause the at least one processor to;

    determine a position and orientation of the HMD worn by the user;

    identify, for a frame of the virtual scene, an image for rendering based on the determined position and orientation of the HMD;

    determine an accommodative state of a plurality of accommodative states for an eye of the user based on the eye position of each eye of the user;

    determine optical aberration information for the determined eye position of each eye of the user for the determined accommodative state, the optical aberration information corresponding to one or more optical aberrations caused by the optics block as the light from the electronic display element passes through the optics block to the exit pupil, the optical aberration information being different for at least one eye position relative to other eye positions within at least one of the plurality of accommodative states;

    determine a focus state for the optics block corresponding to a combination of the accommodative state and the determined eye position of the user, the determined focus state being mapped to a distortion correction of a plurality of distortion corrections, each distortion correction adding pre-distortion to the content for the determined focus state; and

    display the identified image for the frame of the virtual scene on the electronic display element with the pre-distortion of the distortion correction for the determined focus state, the light of the image displayed with the pre-distortion being complementarily distorted by the optics block.

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