Abstract: A head-mounted display device for providing images to a wearer includes a focus-supporting light projector and a beam steerer. The focus-supporting light projector is configured to project light for rendering images based at least on virtual reality contents and/or augmented reality contents. The light projected from the focus-supporting light projector corresponds to an image plane that is selected based at least in part on a position of a pupil of an eye of the wearer. The beam steerer is configured to change a path of the light projected from the focus-supporting light projector based on the position of the pupil of the eye of the wearer.

Abstract: A device includes a first-type liquid crystal (LC) lens configured to provide a first optical power that is variable in a first step resolution. The device also includes a second-type LC lens coupled with the first-type LC lens, and configured to provide a second optical power that is variable in a second step resolution. The first step resolution is smaller than the second step resolution. A total optical power of the device is a sum of the first optical power and the second optical power, and is variable in the first step resolution.

Abstract: A system is provided. The system includes a display configured to output a virtual image. The system also includes a lens assembly optically coupled to the display and including a plurality of optical lenses. The system also includes a controller configured to selectively activate one or more of the plurality of optical lenses, determine a lens center shift between a center of the selectively activated one or more of the plurality of optical lenses and a center of the lens assembly, and determine an image shift based on the lens center shift for shifting the virtual image output from the display.

Abstract: An optical assembly includes a plurality of successive optical stages that are configured to transmit light at a variable overall optical power by configuring one or more stages of the successive optical stages. A respective optical stage of the successive optical stages includes an active optical element that is configurable to be in a first state at a first time and a second state at a second time that is distinct from the first time. The active optical element, in the first state, has a first respective optical power for light of a first polarization and a second respective optical power, that is different from the first respective optical power, for light of a second polarization that is orthogonal to the first polarization. The active optical element, in the second state, has a third optical power for light of the first polarization and light of the second polarization.

Abstract: According to examples, a learning based, end-to-end compression system may include an encoder, which may receive a complex hologram image and encode a latent code for a real component and an imaginary component of the hologram image. The system may also include a quantizer to quantize the latent code and a transform block, which may entropy-code the quantized latent code to obtain a compressed image. The system may further include a generator to decode the compressed image and a discriminator, which may classify the decoded image to obtain an uncompressed image. In case of holographic video input, the encoder may encode a frame to obtain a standard compressed frame and a residual to a latent code. The generator may decode the standard compressed frame and the latent code to obtain a reconstructed residual, and the discriminator may combine the uncompressed standard frame and the reconstructed residual.

Abstract: A head mounted display (HMD) includes a set of one or more lenses defining an optical axis, a display configured to project light through the set of the one or more lenses, a voice coil actuator coupled with the display and configured to move the display along the optical axis, and a first guide that is separate from the first voice coil actuator and coupled with the first display to guide the movement of the first display. The HMD additionally includes a set of one or more position sensors configured to determine a position of the display long the optical axis and an electronic controller configured to receive information identifying a reference position of the display along the optical axis and generate one or more electrical signals for initiating a movement of the first display toward the first reference point along the optical axis.

Abstract: A display system includes a source of unpolarized image light, and a stack of polarization-selective optical elements operable to switchably convert the unpolarized image light into two orthogonally polarized light beams, each of which being switchable in at least one beam characteristic. An output polarizer selects one of the two orthogonally polarized light beams for providing to a user. A depolarizer may be disposed between an electronic display emitting polarized light and the stack. The depolarizer may be in the form of an LC bilayer with randomized in-plane optic axis.

Abstract: A head-mounted display device includes one or more lenses and a display configured to provide visual data through the one or more lenses. The head-mounted display device also includes a direct-current (DC) motor mechanically coupled to the display, and the DC motor is configured to move the display along an axis by rotating a rotatable component of the DC motor. The head-mounted display device further includes: position sensor(s) configured to determine a position of the display, and electronic controller(s) in communication with the position sensor(s). The electronic controller(s) are configured to: (i) receive, from the position sensor(s), the determined position of the display as a first position of the display, (ii) receive information identifying a second position of the display, and (iii) generate electrical signal(s) that cause the DC motor to move the display from the first position to the second position along the axis.

Abstract: According to examples, a display system may include a head-mounted display (HMD) headset. The HMD may comprise at least one exterior-facing RBG camera mounted on a front face of the HMD and on a same visual plane of a user's eye. The at least one exterior-facing RBG camera may collects images for view synthesis. The HMD may include a processor, and a memory storing instructions, which when executed by the processor, cause the processor to provide view synthesis in accordance with a machine-learning (ML) based technique comprising at least one of the following: depth estimation, imaging to sharpening, forward splatting, disocclusion filtering, or fusion.

Abstract: A display system includes a source of unpolarized image light, and a stack of polarization-selective optical elements operable to switchably convert the unpolarized image light into two orthogonally polarized light beams, each of which being switchable in at least one beam characteristic. An output polarizer selects one of the two orthogonally polarized light beams for providing to a user. A depolarizer may be disposed between an electronic display emitting polarized light and the stack. The depolarizer may be in the form of an LC bilayer with randomized in-plane optic axis.

Abstract: A display device includes a display module for providing first image light. The display device also includes a first optical element for receiving and transmitting the first image light from the display module. The display module includes a region from which the first image light is provided in directions other than a direction perpendicular to the first optical element. The display device further includes a second optical element so that the second optical element receives the first image light transmitted through the first optical element and sends the received first image light back toward the first optical element as second image light. The first optical element receives the second image light from the second optical element and sends the second image light back toward the second optical element, and the second optical element receives and transmits the second image light from the first optical element.

Abstract: A system for making a holographic medium for use in generating light patterns for eye tracking includes a light source configured to provide light and a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The system also includes a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium and one or more diffractive optical elements configured to receive the second portion of the light and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium.

Abstract: A device includes a light source configured to emit an image light. The device also includes an optical assembly configured to direct the image light to an eye-box of the device. The optical assembly includes a first optical element portion configured to focus a first portion of the image light propagating through the first optical element portion. The optical assembly also includes a second optical element portion configured to focus a second portion of the image light propagating through the second optical element portion. The second optical element portion includes a liquid crystal (“LC”) lens having an adjustable optical power.

Abstract: A display device includes a diffractive optical element and a tunable light source operable in different states including a first state and a second state. The tunable light source provides first light having a first wavelength while the tunable light source is in the first state and second light having a second wavelength, distinct from the first wavelength, while the tunable light source is in the second state. The first wavelength and the second wavelength correspond to a first color band. The diffractive optical element is positioned to receive and redirect the first light and receive and redirect the second light. The diffractive optical element has a first focal length for the first light and a second focal length, distinct from the first focal length, for the second light.

Abstract: An optical lens assembly and an optical system is provided. The optical lens assembly includes a first optical element including a partial reflector and a quarter-wave plate and a second optical element including a reflective polarizer. The first optical element and the second optical element form a cavity. The pancake lens assembly further includes a varifocal lens having an adjustable optical power, and the varifocal lens is disposed inside or outside the cavity.

Abstract: A head-mounted display device includes a first set of one or more lenses and a first display configured to provide visual data through the first set of one or more lenses. The head-mounted display device further includes a first stepper motor mechanically coupled to the first display, and the first stepper motor is configured to move the first display along a first axis by rotating a rotatable component of the first stepper motor. The head-mounted display device further includes a first electronic controller configured to (i) determine a first position of the first display, (ii) receive information identifying a second position of the first display, and (iii) generate one or more electrical signals that cause the first stepper motor to move the first display from the first position to the second position along the first axis.

Abstract: In one embodiment, a method includes receiving a pair of stereo images having a resolution lower than a target resolution, generating an initial first feature map for a first image of the pair based on first channels associated with the first image and generating an initial second feature map for a second image of the pair based on second channels associated with the second image, generating a first feature map based on combining the first channels with the initial first feature map, generating a second feature map based on combining the second channels with the initial second feature map, up-sampling the first feature map and the second feature map to the target resolution, warping the up-sampled second feature map, and generating a reconstructed image corresponding to the first image having the target resolution based on the up-sampled first feature map and the up-sampled and warped second feature map.

Abstract: A configurable occluder/dimmer for a near-eye display includes an array of polarization rotators and a polarization-selective scatterer downstream of the array of polarization rotators. The array of rotators and the polarization-selective scatterer are disposed between a pair of polarizers. The polarization-selective scatterer only scatters light at one of two orthogonal polarizations, thereby enhancing the achieved extinction ratio of the configurable occluder/dimmer. The configurable occluder/dimmer may be used in the near-eye display to provide occlusion effects rendering added virtual objects opaque, and/or to equalize contrast of the generated virtual imagery across the field of view of the display.

Abstract: A wearable display with coherent replication of optical beams is presented. The display includes a replication element comprising a plurality of features configured to receive and split impinging light into a plurality of sub-beams for propagation in a plurality of directions. At least a portion of the split sub-beams propagating in a direction of an eyebox of the NED form an image by optical interference.

Abstract: A device includes a first-type liquid crystal (LC) lens configured to provide a first optical power that is variable in a first step resolution. The device also includes a second-type LC lens coupled with the first-type LC lens, and configured to provide a second optical power that is variable in a second step resolution. The first step resolution is smaller than the second step resolution. A total optical power of the device is a sum of the first optical power and the second optical power, and is variable in the first step resolution.