Head-mounted display device

A head-mountable display (HMD) device, comprising:

• at least one projector;
• a plurality of scatter shutters, ones of the plurality of scatter shutters associated with a respective focal length;
• lenses to provide a view of a three-dimensional (3D) scene;
• means for requesting or performing a rendering of multiple focus images, wherein the multiple focus images correspond to one or more of the focal lengths, the multiple focus images displayed on respective ones of the scatter shutters for a duration;
• means for adjusting the duration based on a period of a frame rate divided by a number of the scatter shutters minus a transition time, the frame rate corresponding to the 3D scene, the transition time corresponding to a first time to turn a first one of the scatter shutters opaque and a second time to turn a second one of the scatter shutters transparent;
• means for displaying a frame of the 3D scene on the scatter shutters;
• means for selecting, based on eye tracker information, the first one of the scatter shutters corresponding to a projection surface;
• and
• means for causing the first one of the scatter shutters to turn opaque and the second one of the scatter shutters to turn transparent based on the selection.

One or more tangible, non-transitory computer readable media for a head-mountable display (HMD) device, comprising a plurality of instructions that, when executed, cause a processor to at least:

• request or perform a rendering of multiple focus images based on eye tracker information relating to a tracking of one or more eyes of a user of the HMD device, the eye tracker information including eye orientation and pupil dilation of the user, wherein the multiple focus images correspond to a plurality of focal lengths associated with each of a plurality of scatter shutters of the HMD device to be used with a plurality of lenses of the HMD device to provide a view of a three-dimensional (3D) scene;
• display, via at least one projector, a frame of the 3D scene on the scatter shutters, the frame viewable at the focal lengths, the frame including a plurality of focal layers relating to the rendering of the multiple focus images, ones of the focal layers generated at respective ones of the focal lengths, the multiple focus images displayed on respective ones of the scatter shutters for a duration;
• adjust the duration based on a period of a frame rate divided by a number of the scatter shutters minus a transition time, the frame rate corresponding to the 3D scene, the transition time corresponding to a first time to turn a first one of the scatter shutters opaque and a second time to turn a second one of the scatter shutters transparent;
• select, based on the eye tracker information, the first one of the scatter shutters corresponding to a projection surface;
• and
• cause the first one of the scatter shutters to turn opaque and the second one of the scatter shutters to turn transparent based on the selection, the first one of the scatter shutters to turn opaque in response to an alternating current pulse provided through a film of the first one of the scatter shutters.

A method of displaying three-dimensional (3D) scenes via a head-mountable display (HMD) device, the method comprising:

• requesting or performing a rendering of multiple focus images based on eye tracker information relating to a tracking of one or more eyes of a user of the HMD device, the eye tracker information including eye orientation and pupil dilation of the user, wherein the multiple focus images correspond to a plurality of focal lengths associated with respective ones of a plurality of scatter shutters of the HMD device, the scatter shutters to be used with a plurality of lenses of the HMD device to provide a view of a three-dimensional (3D) scene;
• displaying, via at least one projector, a frame of the 3D scene on the scatter shutters, the frame viewable at the focal lengths, the frame including a plurality of focal layers relating to the rendering of the multiple focus images at respective ones of the focal lengths, the multiple focus images displayed on respective ones of the scatter shutters for a duration;
• adjusting the duration based on (a) a frame rate corresponding to the 3D scene and (b) a transition time corresponding to a first time to turn a first one of the scatter shutters opaque and a second time to turn a second one of the scatter shutters transparent, the duration corresponding to a period of the frame rate divided by a number of the scatter shutters minus the transition time;
• selecting the first one of the scatter shutters corresponding to a projection surface based on the eye tracker information;
• and
• causing the first one of the scatter shutters to turn opaque and the second one of the scatter shutters to turn transparent based on the selection by providing an alternating current pulse through a film of the first one of the scatter shutters.