Abstract: An eye tracking system can include an eye-tracking camera configured to obtain images of the eye at different exposure times or different frame rates. For example, longer exposure images of the eye taken at a longer exposure time can show iris or pupil features, and shorter exposure, glint images can show peaks of glints reflected from the cornea. The shorter exposure glint images may be taken at a higher frame rate (than the longer exposure images) for accurate gaze prediction. The shorter exposure glint images can be analyzed to provide glint locations to subpixel accuracy. The longer exposure images can be analyzed for pupil center or center of rotation. The eye tracking system can predict future gaze direction, which can be used for foveated rendering by a wearable display system. In some instances, the eye-tracking system may estimate the location of a partially or totally occluded glint.

Abstract: The disclosed apparatus may include (1) a plurality of vapor chambers that (A) are mounted to a plurality of individual power components that dissipate heat within a computing device and (B) absorb heat dissipated by the plurality of individual power components within the computing device and (2) at least one thermal coupling that (A) physically bridges the plurality of vapor chambers to one another within the computing device and (B) facilitates heat transfer among the plurality of vapor chambers mounted to the individual power components. Various other apparatuses, systems, and methods are also disclosed.

Abstract: A display system includes a head-mounted display configured to project light, having different amounts of wavefront divergence, to an eye of a user to display virtual image content appearing to be disposed at different depth planes. The wavefront divergence may be changed in discrete steps, with the change in steps being triggered based upon whether the user is fixating on a particular depth plane. The display system may be calibrated for switching depth planes for a main user. Upon determining that a guest user is utilizing the system, rather than undergoing a full calibration, the display system may be configured to switch depth planes based on a rough determination of the virtual content that the user is looking at. The virtual content has an associated depth plane and the display system may be configured to switch to the depth plane of that virtual content.

Abstract: A display system can include a head-mounted display configured to project light to an eye of a user to display virtual image content at different amounts of divergence and collimation. The display system can include an inward-facing imaging system images the user's eye and processing electronics that are in communication with the inward-facing imaging system and that are configured to obtain an estimate of a center of rotation of the user's eye. The display system may render virtual image content with a render camera positioned at the determined position of the center of rotation of said eye.

Abstract: A drag reduction system introduces pressurized gases to selected regions of a vehicle, such as a tractor trailer combination 100 for reducing the aerodynamic drag thereon. The system 140 or any combination of components thereof may be installed on new combinations or may be retrofitted on existing combinations. The drag reduction system may be controlled to selectively determine which regions receive pressurized gases and at what flow rates such regions receive the pressurized gas.