Abstract: A head-mounted display (HMD) includes a pancake lens block, an eye tracking system, and an electronic display. The electronic display is coated with a dichroic film that transmits visible light and reflects infrared light (IR). An IR emitter illuminates an eye of the user, and infrared light is reflected from an eye through the pancake lens block and is incident on the dichroic film. The reflected light undergoes multiple reflections before being captured by an image capturing element of the eye tracking system that is positioned at a periphery of HMD located off-axis relative to an optical axis of the pancake lens block.

Abstract: A head-mounted display (HMD) includes a pancake lens block, an eye tracking system, and an electronic display. The electronic display is coated with a dichroic film that transmits visible light and reflects infrared light (IR). An IR emitter illuminates an eye of the user, and infrared light is reflected from an eye through the pancake lens block and is incident on the dichroic film. The reflected light undergoes multiple reflections before being captured by an image capturing element of the eye tracking system that is positioned at a periphery of HMD located off-axis relative to an optical axis of the pancake lens block. Moreover, each reflection results in a particular view of the eye that results in multiple views of the eye being received by the image capturing element.

Abstract: A head-mounted display (HMD) includes a pancake lens block, an eye tracking system, and an electronic display. The electronic display is coated with a dichroic film that transmits visible light and reflects infrared light (IR). An IR emitter illuminates an eye of the user, and infrared light is reflected from an eye through the pancake lens block and is incident on the dichroic film. The reflected light is captured by an image capturing element of the eye tracking system that is positioned at a periphery of HMD located off-axis relative to an optical axis of the pancake lens block.

Abstract: A head-mounted display (HMD) includes a multifocal block having one or more possible focal distances and includes a multifocal structure. The multifocal structure has a first focal distance and a second focal distance of the one or more possible focal distances. The multifocal structure includes one or more optical components positioned in series such that light from an electronic display is received and passes through each of the one or more optical components at least once before being output from the multifocal structure. The one or more optical components includes a switchable half waveplate (SHWP). The SHWP has a first state that causes the multifocal structure to output image light at the first focal distance, and a second state that causes the multifocal structure to output the image light at the first focal distance.

Abstract: Systems and methods for displaying an image across a plurality of displays are described herein. Pixel intensity values in the multifocal display are determined using correlation values and numerical iterations. An eye tracking system measures eye tracking information about a position of a user's eye, and the pixel intensity values are modified based on the eye tracking information. An image is displayed on the plurality of displays based on the determined pixel intensity values. The plurality of displays may be within an HMD, and address vergence accommodation conflict by simulating retinal defocus blur.

Abstract: A head-mounted display (HMD) divides an image into a high resolution (HR) inset portion at a first resolution, a peripheral portion, and a transitional portion. The peripheral portion is downsampled to a second resolution that is less than the first resolution. The transitional portion is blended such that there is a smooth change in resolution that corresponds to a change in resolution between a fovea region and a non-fovea region of a retina. An inset region is generated using the HR inset portion and the blended transitional portion, and a background region is generated using the downsampled peripheral portion. The inset region is provided to a HR inset display, and the background region is provided to a peripheral display. An optics block combines the displayed inset region with the displayed background region to generate composite content.

Abstract: A head-mounted display includes an electronic display, a liquid crystal (LC) array with LC cells forming a dynamic lens array, an optical assembly, an eye tracker, and a controller. The LC array refracts image light emitted from the electronic display. The LC array includes a gaze region with a subset of the LC cells forming a portion of the dynamic lens array having a lens density different than that associated with remaining portions of the LC cells outside the gaze region. The eye tracker tracks a gaze location corresponding to a foveal region of a user's eye. The controller generates emission instructions and provides the emission instructions to the LC array to change location of the gaze region in the LC array based on the tracked gaze location. The optical assembly directs portions of image light refracted by the gaze region toward the foveal region of the user's eye.

Abstract: A user device comprises an imaging device and a controller. The imaging device captures one or more images of a test pattern presented by a display surface through a lens of eyewear device and the test pattern not through the lens in accordance with imagining instructions from the controller. The controller generates imaging instructions and provides the imaging instructions to the imaging device. The controller determines one or more optical parameters of the eyewear device based on the captured one or more images of the test pattern as seen through the lens and the test pattern not seen through the lens. The optical parameters may include an optical power of the lens or an inter-pupillary distance of the eyewear device.

Abstract: A multifocal test system is described herein. The system includes a plurality of displays located at different focal distances. Each display includes a plurality of pixels with pixel intensity values. The system includes an eye tracking system that determines eye tracking information about a position of an eye relative to the displays. A controller is configured to determine pixel intensity values based on decomposition of a scene across the plurality of displays, and the position of the eye.

Abstract: A near-eye-display (NED) includes an eye tracking system and a waveguide display. The eye tracking system tracks locations based on a location of the user's eyes. The waveguide display includes a light source, an output waveguide and a controller. The output waveguide includes a dynamic output grating that outputs an expanded image light to the tracked eyebox locations. The decoupling grating is a 2D array of spatially switchable liquid crystal (LC) pixels including an active subset of LC pixels emitting light only to regions within the tracked eyebox locations. The decoupling grating dynamically out-couples the expanded image light to the tracked location based on switching instructions generated and provided by the controller.

Abstract: A head-mounted device (HMD) comprises a display element, a Fresnel assembly, an illumination source, and a camera assembly. The display element outputs image light in a first band of light through a display surface. The optics block directs light from the display element to a target region (e.g., includes a portion of a user's face, eyes, etc.). The Fresnel assembly transmits light in the first band and directs light in a second band different than the first band to a first position. The source illuminates the target area with light in the second band. The camera is located in the first position and captures light in the second band corresponding to light reflected from the target area that is then reflected by the Fresnel assembly toward the camera. A controller may use the captured light to determine tracking information for areas of a user's face (e.g., eyes).

Abstract: A head-mounted display (HMD) including multiple layered display panels. The HMD may include a first display panel to display a first image, and a second display panel positioned in front of the first display panel to at least partially overlap with the first display panel. The second display panel may include a display substrate, and a plurality of light emitting diodes (LEDs) positioned on the display substrate. The plurality of LEDs display a second image. The display substrate and the plurality of LEDs are transparent for the first image to be visible through the second display panel.

Abstract: A near-eye-display (NED) includes an eye tracking system and a waveguide display. The eye tracking system tracks locations based on a location of the user's eyes. The waveguide display includes a light source, an output waveguide and a controller. The output waveguide includes a dynamic output grating that outputs an expanded image light to the tracked eyebox locations. The decoupling grating is a 2D array of spatially switchable liquid crystal (LC) pixels including an active subset of LC pixels emitting light to regions within the tracked eyebox locations. The decoupling grating dynamically out-couples the expanded image light to the tracked location based on switching instructions generated and provided by the controller.

Abstract: A head-mounted display (HMD) that includes a high resolution (HR) inset display and a peripheral display. The HR inset display is configured to display an inset region that includes a portion of an image at a first resolution that corresponds to a resolution of a fovea region of a human eye. The peripheral display displays a background region, the background region having a second resolution that is less than the first resolution, the second resolution corresponding to a resolution of a non-fovea region of the human eye. The HMD includes an optics block that combines the inset region and the background region to create composite content at retinal resolution, and direct the composite content to an exit pupil of the HMD corresponding to a location of an eye of a user of the HMD.

Abstract: A near-eye-display (NED) includes an eye tracking system and a waveguide display. The eye tracking system tracks locations based on a location of the user's eyes. The waveguide display includes a light source, an output waveguide and a controller. The output waveguide includes a dynamic output grating that outputs an expanded image light to the tracked eyebox locations. The decoupling grating is a 2D array of spatially switchable liquid crystal (LC) pixels including an active subset of LC pixels emitting light to regions within the tracked eyebox locations. The decoupling grating dynamically out-couples the expanded image light to the tracked location based on switching instructions generated and provided by the controller.

Abstract: A multiplanar head mounted display (HMD) includes two or more artificial display planes for each eye located at optical distances that can be dynamically adjusted based on a location within a scene presented by the HMD that the user views. For example, a scene is presented on two or more electronic display elements (e.g., screens) of the HMD. A focal length of an optics block that directs image light from the electronic display elements towards the eyes of a user is adjusted using a varifocal system (e.g., an element that mechanically changes a distance between a lens system in the optics block and the electronic display element, an element that changes shape of one or more lenses in the lens system in the optics block, etc.) based on a location or object within the scene where the user is looking.

Abstract: A head-mounted display (HMD) includes a multifocal block having one or more possible focal distances and includes a multifocal structure. The multifocal structure has a first focal distance and a second focal distance of the one or more possible focal distances. The multifocal structure includes one or more optical components positioned in series such that light from an electronic display is received and passes through each of the one or more optical components at least once before being output from the multifocal structure. The one or more optical components includes a switchable half waveplate (SHWP). The SHWP has a first state that causes the multifocal structure to output image light at the first focal distance, and a second state that causes the multifocal structure to output the image light at the first focal distance.

Abstract: A head-mounted display (HMD) divides an image into a high resolution (HR) inset portion at a first resolution, a peripheral portion, and a transitional portion. The peripheral portion is downsampled to a second resolution that is less than the first resolution. The transitional portion is blended such that there is a smooth change in resolution that corresponds to a change in resolution between a fovea region and a non-fovea region of a retina. An inset region is generated using the HR inset portion and the blended transitional portion, and a background region is generated using the downsampled peripheral portion. The inset region is provided to a HR inset display, and the background region is provided to a peripheral display. An optics block combines the displayed inset region with the displayed background region to generate composite content.

Abstract: A head-mounted display (HMD) divides an image into a high resolution (HR) inset portion at a first resolution, a peripheral portion, and a transitional portion. The peripheral portion is downsampled to a second resolution that is less than the first resolution. The transitional portion is blended such that there is a smooth change in resolution that corresponds to a change in resolution between a fovea region and a non-fovea region of a retina. An inset region is generated using the HR inset portion and the blended transitional portion, and a background region is generated using the downsampled peripheral portion. The inset region is provided to a HR inset display, and the background region is provided to a peripheral display. An optics block combines the displayed inset region with the displayed background region to generate composite content.

Abstract: A head-mounted display (HMD) that includes a high resolution (HR) inset display and a peripheral display. The HR inset display is configured to display an inset region that includes a portion of an image at a first resolution that corresponds to a resolution of a fovea region of a human eye. The peripheral display displays a background region, the background region having a second resolution that is less than the first resolution, the second resolution corresponding to a resolution of a non-fovea region of the human eye. The HMD includes an optics block that combines the inset region and the background region to create composite content at retinal resolution, and direct the composite content to an exit pupil of the HMD corresponding to a location of an eye of a user of the HMD.