Abstract: The disclosure includes near-eye optical elements configured to suppress stray infrared light. Infrared light sources illuminate an eyebox area. A combiner layer may receive reflected infrared light and direct the reflected infrared light to a camera.

Abstract: Aspects of the present disclosure are directed to controlling optical parameters at a user's eye using an artificial reality system and tracked user conditions. For example, based on tracked user eye positioning, implementations can adjust the light that enters the user's eye to control an image shell generated at the user's eye. An image shell refers to the way light, that enters the eye, focuses on the retina of the eye. Example properties of an image shell include image shell centration, image shell curvature, image shell shape, etc. A user may focus on an object in an artificial reality environment (e.g., real-world object or virtual object) and light from the object can generate an image shell at the user's eyes. The image shell at the user's eyes can impact the user's vision and/or eye biology.

Abstract: An apparatus for a pancake lens with integration accommodation may include a beamsplitter, a first lens, a reflective polarizer, and a second lens, where the second lens includes at least one planar module embedded within the second lens. Other apparatuses, systems, and methods are also disclosed.

Abstract: A light source structure includes a vertical cavity surface-emitting laser (VCSEL) device having a top surface and at least one side surface substantially perpendicular to and adjoining the top surface. The VCSEL device is configurable to output directed emission of light through the top surface. The light source structure also includes a light barrier surrounding at least a top portion of the VCSEL device and separated from the at least one side surface. The light barrier is configured to receive spontaneous emission out of the VCSEL device through the at least one side surface.

Abstract: A display device may include a display screen having a plurality of light emitting elements and a lens system that receives light emitted from the display screen. The lens system may include a lens having a liquid crystal module, an incident side surface on a first side of the liquid crystal module, and an exit side surface on a second side of the liquid crystal module, wherein at least one of the incident side surface and the exit side surface comprises a curved surface. Various other devices, systems, and methods are also disclosed.

Abstract: A light field display is composed of a light source assembly (LSA), a collimating lens, an incoupling section, a spatial light modulator (SLM), and gratings. The LSA includes point light sources that emit light at different time periods. The collimating lens collimates light from the point light sources. The incoupling section incouples the collimated light to a waveguide. The SLM spatially modulates the collimated light. The gratings outcouple spatially modulated light from the waveguide, and for any given point light source of the point light sources, the given point light source has a respective corresponding grating of the gratings that outcouples from the waveguide light that originated from the given point light source. The spatially modulated light output in each time period forms a respective virtual emitter in an eyebox, and over the different time periods the virtual emitters in aggregate form at least one virtual object.

Abstract: An optical system includes a first optical element having at least a first optical surface and a second optical surface, the first optical surface is not parallel to the second optical surface. The optical system includes a plurality of optical elements positioned adjacent to the second optical surface of the first optical element. The respective optical element of the plurality of optical elements is configured to receive light transmitted through the first optical surface at a first angle with respect to the second optical surface and direct the light back toward the first optical surface at a second angle, that is distinct from the first angle, with respect to the second optical surface.

Abstract: An apparatus includes a partial reflector, a first lens, a reflective polarizer, and a second lens. The second lens includes a first part and a second part coupled to the first part with at least one optical property designed to correct a specific user's refractive error. Various other apparatuses, systems, and methods of manufacture are also disclosed.

Abstract: An apparatus, system, and method for an eye tracking system for a head-mounted device include a light source, an image sensor, and a frame tracking system. The light source and image sensor may be configured to determine absolute and relative eye orientations. The frame tracking system may be configured to determine the displacement of a head-mounted device frame relative to the face of the user. The frame tracking system may provide displacement data for the displacement of the head-mounted device frame to the eye tracking system to enable the eye tracking system to compensate for frame slippage, frame jostling, or other frame displacement (relative to the face of the user). The frame tracking system may include one or more position sensors disposed on the head-mounted device frame and logic configured to determine displacement data using information from the one or more position sensors.

Abstract: A retinal imaging system includes a projector, an imaging device, and a controller coupled to an eye tracking system under test. The projector emits a light pattern to be delivered to a pupil of an eye, a location of the pupil being estimated by the eye tracking system under test. The imaging device captures one or more images of a retina of the eye illuminated with at least a portion of the light pattern. The controller determines one or more eye tracking parameters based on the captured one or more images of the retina. The controller compares each determined eye tracking parameter with each of estimated one or more eye tracking parameters, wherein values for the one or more eye tracking parameters are estimated by the eye tracking system under test. The controller characterizes each estimated eye tracking parameter based on the comparison.

Abstract: An eye is illuminated with infrared illumination light. Illuminating the eye includes illuminating a near-eye ellipsoidal lensing structure. A tracking image of Purkinje reflections of the infrared illumination light is captured by a camera. An eye position of the eye is determined in response to the tracking image.

Abstract: An apparatus, system, and method for an imaging system that may be used to support eye tracking in a head mounted display. The imaging system may include an image sensor positioned in a user's field of view and within a lens assembly to capture light that is reflected from an eye. The imaging system may include two optical elements that are configured to at least partially direct scene light around the image sensor to conceal the image sensor from the user's eye. The image sensor is positioned between the two optical elements within the lens assembly.

Abstract: A system includes (a) an optical device having a GRIN LC lens, the GRIN LC lens including a liquid crystal layer, (b) a sensor configured to assess an attribute of the liquid crystal layer, (c) a heat source, and (d) a controller configured to mediate heat flow between the heat source and the liquid crystal layer based on a signal provided by the sensor.

Abstract: There is provided a photonic integrated circuit configured for low-coherence interferometry and in-field sensing. The photonic integrated circuit can include an opto-coupler that has a substrate substantially transparent to a specified wavelength of light and a waveguide configured to route a light beam having a center wavelength at the specified wavelength. The opto-coupler further includes a mirror disposed at an angle, and the mirror is disposed on an angled surface of the substrate, the angled surface being proximate to an output end of the waveguide. The opto-coupler further includes a beam forming element configured to collect light reflected from the mirror, and the waveguide and the mirror are integrated within the substrate.

Abstract: A near-eye imaging system includes a light source, a waveguide, a scanner, and a sensor. The light source is configured to emit light. The waveguide includes an output coupler. The scanner is configured to direct the light to the output coupler at varying scan angles. The waveguide confines the light to guide the light to the output coupler. The output coupler has negative optical power and is configured to direct the light to exit the waveguide as expanding illumination light toward an eyebox region. The sensor is configured to generate a tracking signal in response to returning light incident on the sensor via the scanner and via the output coupler.

Abstract: A system includes a diffractive optical element including at least one substrate and a grating structure. The grating structure is configured to diffract a first light having an incidence angle within a predetermined range, and the at least one substrate is configured to reflect a second light. The system also includes a polarization selective mechanism configured to generate images based on the first light and the second light, respectively.

Abstract: An eye-tracking method includes enabling at least one light source of an array of light sources to emit non-visible light to illuminate an eye. The method also includes obtaining at least one image of the eye while the at least one light source is enabled. A position of the eye may then be determined based on a position of the at least one light source within the array of light sources in response to determining that the at least one image indicates a bright pupil condition when the at least one light source was enabled.

Abstract: A system is provided. The system includes a first PVH layer configured to deflect a first polarized light having a first handedness. The system includes a second PVH layer coupled to the first PVH layer and configured to deflect a second polarized light having a second handedness opposite to the first handedness. The system includes an optical sensor configured to generate a first image based on the first polarized light deflected by the first PVH layer and generate a second image based on the second polarized light deflected by the second PVH layer.

Abstract: Angular sensors that may be used in eye-tracking systems are disclosed. An eye-tracking system may include a plurality of light sources to emit illumination light and a plurality of angular light sensors to receive returning light that is the illumination light reflecting from an eyebox region. The angular light sensors may output angular signals representing an angle of incidence of the returning light.

Abstract: An optical system includes an illumination layer, an optical combiner, and an active optics block. The illumination layer includes an array of point light sources configured to emit calibration light. The optical combiner is configured to pass visible light to a front side of the optical system and to direct the calibration light to a camera that generates an image in response to the calibration light. The image includes an array of points corresponding to the array of point light sources. The active optics block includes an adjustable lens disposed between the illumination layer and the optical combiner and is configured to pass the calibration light to the optical combiner and to focus the visible light. The active optics block is further configured to adjust an optical power of the adjustable lens based on the image of the array of points.