Light scattering element for providing optical cues for lens position adjustment
AssigneeFacebook Technologies, LLC
InventorsBrian Wheelwright, Jacques Gollier, Ying Geng
Life of this patent
Estimating the term…
Abstract
A method includes displaying a high contrast image on a display screen; and projecting the high contrast image through a Fresnel lens to provide a cue for adjusting a position of the Fresnel lens. Also disclosed is a device for determining and/or adjusting an offset of a Fresnel lens. The device includes a Fresnel lens and a display screen configured to project a high contrast image through the Fresnel lens. Further disclosed is a method for adjusting a position of a Fresnel lens. The method includes receiving a projection of a high contrast image transmitted through a Fresnel lens; and adjusting a position of the Fresnel lens based on the projection of the high contrast image.
Claims17
A method, comprising:
- providing, in a head-mounted display device with one or more display screens and a lens, a cue for adjusting a location of the lens by:
- displaying a first image on the one or more display screens;
- projecting the first image through the lens and a first anisotropic light scattering element;
- focusing, with the lens, and transmitting, through the first anisotropic light scattering element, the first image displayed on the one or more display screens while the head-mounted display device is in a lens position adjustment mode;
- and
- focusing, with the lens, an image displayed on the one or more display screens without transmitting through the first anisotropic light scattering element while the head-mounted display device is in a display mode that is distinct from the lens position adjustment mode.
A method, comprising:
- receiving a cue for adjusting a position of a lens of a head-mounted display device having one or more display screens, including:
- receiving a projection of a first image displayed on the one or more display screens, focused by the lens and transmitted through a first anisotropic light scattering element while the head-mounted display device is in a lens position adjustment mode;
- and
- in conjunction with receiving the projection of the first image, adjusting the position of the lens based on the projection of the first image;
- and
- receiving a projection of an image displayed on the one or more display screens, focused by the lens without transmitting the projection through the first anisotropic light scattering element while the head-mounted display device is in a display mode that is distinct from the lens position adjustment mode.
Dependencies are inferred from the claim text.