Abstract: Integral imaging based light field displays using time-multiplexing schemes.

Abstract: A public transport vehicle charging system is applied to multiple charging stations and an electric vehicle. The public transport vehicle charging system includes a server communicatively connected to the charging stations and the electric vehicle. The server is configured to establish a charging decision model according to multiple historical conditions and a transport schedule. The server is configured to calculate multiple ideal decisions according to the historical conditions and the transport schedule, so as to adjust multiple parameters in the charging decision model. When the electric vehicle drives toward a first charging station according to the transport schedule, the server is configured to input a current condition into the charging decision model, so as to selectively charge the electric vehicle by the first charging station. The current condition includes a current remaining power and a current position of the electric vehicle.

Abstract: A fluid-driven actuator 100 includes a bending actuator 200 including a first wall portion 201, a second wall portion 203 cooperating with the first wall portion 201 to define an undulating actuator profile. The bending actuator 200 also includes an inner fluid bladder 202 disposed between the first and second wall portions 201,203 and following the undulating actuator profile. The fluid-driven actuator 100 further includes a restraint member 300 arranged to cooperate with the bending actuator 200 to produce a plurality of motions in response to fluid supplied to the inner fluid bladder 202.

Abstract: A method of manufacturing a carrying substrate is provided. At least one circuit component is disposed on a first circuit structure. An encapsulation layer is formed on the first circuit structure and encapsulates the circuit component. A second circuit structure is formed on the encapsulation layer and electrically connected to the circuit component. The circuit component is embedded in the encapsulation layer via an existing packaging process. Therefore, the routing area is increased, and a package substrate requiring a large size has a high yield and low manufacturing cost.

Abstract: Compact occlusion-capable optical see-through head mounted displays (OCOST-HMDs) are described having a double-wrapped path and capable of rendering per-pixel mutual occlusion, and correct see-through viewing perspective or a pupil-matched viewing between the virtual and real views. An example device includes a polarizer, a polarizing beam splitter, an objective lens, a spatial light modulator (SLM), an eyepiece lens, a quarter wave plate, and a reflective optical element configured to reflect the light that is incident thereupon in a first direction, and to transit the light received from a microdisplay that is incident thereupon from a second direction. The components form a first double-pass configurations that allow the light that passes through the objective to reflect from the SLM and propagate again through the objective, and a second double-pass configuration that allows the light that passes through the eyepiece to reflect from the reflective optical element and propagate again through the eyepiece.

Abstract: Devices and methods that use a perceptual-driven approach to foveated displays with the goal of offering elegant degradation of image resolution with the increase of eccentricity and eye movements. As a result, the implementation leads to minimally perceivable image artifacts and image resolution discontinuity, and may further eliminate or limit the need for an eyetracker or scanning mechanism. Hereby we refer this approach as perceptual-driven continuous foveated display in contrast to the multi-level discrete foveation approach used previously.

Abstract: A display placed in an optical pathway extending from an entrance pupil of a person's eye to a real-world scene beyond the eye. The display includes at least one 2-D added-image source that is addressable to produce a light pattern corresponding to a virtual object. The source is situated to direct the light pattern toward the person's eye to superimpose the virtual object on an image of the real-world scene as perceived by the eye via the optical pathway. An active-optical element is situated between the eye and the added-image source at a location that is optically conjugate to the entrance pupil and at which the active-optical element forms an intermediate image of the light pattern from the added-image source. The active-optical element has variable optical power and is addressable to change its optical power to produce a corresponding change in perceived distance at which the intermediate image is formed, as an added image to the real-world scene, relative to the eye.

Abstract: A tiled head-mounted display device, comprising: an optical component including a plurality of prisms with free-form surfaces, each prism being a wedge prism comprising a first optical surface, a second optical surface and a third optical surface; and a display component including a plurality of micro-displays, wherein the number of the micro-displays and the number of the prisms with free-form surfaces is identical. The tiled head-mounted display device according to the present invention is compact and light, provides wide field of view and high resolution, especially for the optical tiling head-mounted display device, the exit pupil planes of each display channels are coincident, thus avoiding pupil aberration and keeping exit pupil diameter and eye clearance same as the single ocular. There is no resolution variance throughout the entire field of view, thus preventing extra trapezoid distortion.

Abstract: The present invention comprises a compact optical see-through head-mounted display capable of combining, a see-through image path with a virtual image path such that the opaqueness of the see-through image path can be modulated and the virtual image occludes parts of the see-through image and vice versa.

Abstract: A head-mounted lightfield display including a lightfield rendering unit, a numerical aperture (NA) expander for receiving an optical output from the lightfield rendering unit and for creating an expanded lightfield, and a substrate-guided optical combiner optically coupled to the NA expander for receiving the expanded lightfield and transmitting the expanded light field to an eyebox for viewing by a user.

Abstract: The present invention comprises a compact optical see-through head-mounted display capable of combining, a see-through image path with a virtual image path such that the opaqueness of the see-through image path can be modulated and the virtual image occludes parts of the see-through image and vice versa.

Abstract: Systems and methods for automating clothing transactions. The methods comprise: obtaining user input data and/or sensor data specifying characteristics of a body for an individual; transforming the user input data and/or sensor data into a 3D graphical representation of the body; analyzing the 3D graphical representation to derive 3D body measurements for the individual; identifying clothing items based on results from comparing the 3D body measurements to reference measurements associated with clothing items having different styles, sizes and brand associations; analyzing how a fabric elasticity and a garment construction could impact a fit of each identified clothing item relative to each body part of the individual based on the 3D graphical representation of the body; and filtering the clothing items based on results of the analyzing and fit preferences of the individual to generate recommended clothing items for the individual.

Abstract: A tiled head-mounted display device, comprising: an optical component including a plurality of prisms with free-form surfaces, each prism being a wedge prism comprising a first optical surface, a second optical surface and a third optical surface; and a display component including a plurality of micro-displays, wherein the number of the micro-displays and the number of the prisms with free-form surfaces is identical. The tiled head-mounted display device according to the present invention is compact and light, provides wide field of view and high resolution, especially for the optical tiling head-mounted display device, the exit pupil planes of each display channels are coincident, thus avoiding pupil aberration and keeping exit pupil diameter and eye clearance same as the single ocular. There is no resolution variance throughout the entire field of view, thus preventing extra trapezoid distortion.

Abstract: The present invention relates generally to a head-mounted projection display, and more particularly, but not exclusively to a polarized head-mounted projection display including a light engine and a compact, high-performance projection lens for use with reflective microdisplays.

Abstract: Images perceived to be substantially full color or multi-colored may be formed using component color images that are distributed in unequal numbers across a plurality of depth planes. The distribution of component color images across the depth planes may vary based on color. In some embodiments, a display system includes a stack of waveguides that each output light of a particular color, with some colors having fewer numbers of associated waveguides than other colors. The stack of waveguides may include by multiple pluralities (e.g., first and second pluralities) of waveguides, each configured to produce an image by outputting light corresponding to a particular color. The total number of waveguides in the second plurality of waveguides is less than the total number of waveguides in the first plurality of waveguides, and may be more than the total number of waveguides in a third plurality of waveguides, in embodiments where three component colors are utilized.

Abstract: A method for rendering light field images of a 3D scene in an HMD using an integral-imaging-based light field display. The method includes providing integral imaging (InI) optics including a microdisplay, the InI optics having a central depth plane (CDP) associated therewith; providing an eyepiece in optical communication with the InI optics, the eyepiece and the InI optics together providing InI-HMD optics; sampling the 3D scene using a simulated virtual array of cameras so that each camera captures a respective portion of the 3D scene to create a plurality of elemental images; and displaying the image data on the microdisplay.

Abstract: Several unique hardware configurations and methods for freeform optical display systems are disclosed. A freeform display system includes primary freeform optical element(s) and secondary freeform optical element(s) in tiled arrangements to expand the horizontal field of view (FOV) or the vertical field of view. The system may include a variable focusing system that produces intermediate pupil and changes the focal distance of a single focal plane or switches among multiple focal planes for rendering objects in focus while resolving accommodation-convergence conflict. The system may map light samples to appropriate light rays in physical space and use a cluster of projectors to project the mapped light rays to produce the light field of the virtual display content. Methods for making tiled freeform optical display systems and methods for producing virtual content with variable focus freeform optics and rendering light fields are also disclosed.

Abstract: Images perceived to be substantially full color or multi-colored may be formed using component color images that are distributed in unequal numbers across a plurality of depth planes. The distribution of component color images across the depth planes may vary based on color. In some embodiments, a display system includes a stack of waveguides that each output light of a particular color, with some colors having fewer numbers of associated waveguides than other colors. The stack of waveguides may include by multiple pluralities (e.g., first and second pluralities) of waveguides, each configured to produce an image by outputting light corresponding to a particular color. The total number of waveguides in the second plurality of waveguides is less than the total number of waveguides in the first plurality of waveguides, and may be more than the total number of waveguides in a third plurality of waveguides, in embodiments where three component colors are utilized.

Abstract: Compact occlusion-capable optical see-through head mounted displays (OCOST-HMDs) are described having a double-wrapped path and capable of rendering per-pixel mutual occlusion, and correct see-through viewing perspective or a pupil-matched viewing between the virtual and real views. An example device includes a polarizer, a polarizing beam splitter, an objective lens, a spatial light modulator (SLM), an eyepiece lens, a quarter wave plate, and a reflective optical element configured to reflect the light that is incident thereupon in a first direction, and to transit the light received from a microdisplay that is incident thereupon from a second direction. The components form a first double-pass configurations that allow the light that passes through the objective to reflect from the SLM and propagate again through the objective, and a second double-pass configuration that allows the light that passes through the eyepiece to reflect from the reflective optical element and propagate again through the eyepiece.

Abstract: Several unique hardware configurations and methods for freeform optical display systems are disclosed. A freeform display system includes primary freeform optical element(s) and secondary freeform optical element(s) in tiled arrangements to expand the horizontal field of view (FOV) or the vertical field of view. The system may include a variable focusing system that produces intermediate pupil and changes the focal distance of a single focal plane or switches among multiple focal planes for rendering objects in focus while resolving accommodation-convergence conflict. The system may map light samples to appropriate light rays in physical space and use a cluster of projectors to project the mapped light rays to produce the light field of the virtual display content. Methods for making tiled freeform optical display systems and methods for producing virtual content with variable focus freeform optics and rendering light fields are also disclosed.