Example embodiments relate to an optical shutter including a first polarization filter having a nanopore-cholesteric liquid crystal layer, which includes a cholesteric liquid crystal matrix and a plurality of liquid crystal nanopores embedded in the cholesteric liquid crystal matrix, and having a reflective wavelength band that varies according to electrical control, and a second polarization filter that is parallel to the first polarization filter, includes a nanopore-cholesteric liquid crystal layer, which includes a cholesteric liquid crystal matrix and a plurality of liquid crystal nanopores embedded in the cholesteric liquid crystal matrix, and has a reflective wavelength band that varies according to electrical control.

Polarization independent optical shutter using cholesteric liquid crystals and three-dimensional image acquisition apparatus employing the same

A near-eye display (NED) includes a source assembly that emits image light, a waveguide-based display assembly, and a controller coupled to the waveguide-based display assembly, and an optical assembly. The waveguide-based display assembly includes a liquid crystal (LC) waveguide, an input area, and an output area. The LC waveguide comprising a first glass layer, a second glass layer, and a LC layer between the first and second glass layers. The LC waveguide propagates the image light in-coupled via the input area in accordance with emission instructions toward the output area that out-couples the image light to a user's eye. The controller generates the emission instructions and provides the emission instructions to the LC waveguide for generating the image light of substantially uniform brightness.

Liquid crystal structure for controlling brightness uniformity in a waveguide display

Provided are an impact prediction device, control device, impact prediction system, impact determination method, and impact prediction program with which it is possible to ensure safety in an area in which there is a risk of contact between an object to be controlled and a worker when an object to be controlled such as an industrial robot and a human subject such as a worker perform work in cooperation. This impact prediction device (1) is provided with a specifications recording unit that records specification information relating to the specifications of the object to be controlled. The impact prediction device (1) calculates a movement of the human subject on the basis of a measurement result for a part to be measured in the body of the human subject (S401-S405), and calculates an operation of the object to be controlled (S406-S408). Then, on the basis of the movement of the human subject, the operation of the object to be controlled, and the specification information recorded in the specifications recording unit, the impact prediction device (1) calculates an impact degree, which represents the degree of the impact of the object to be controlled on the human subject when the object to be controlled makes contact with the human subject (S411), and controls the object to be controlled on the basis of the calculation result (S412).

Impact prediction device, impact prediction system, control device, impact prediction method and impact prediction program

A near-eye display includes a display assembly, an eye tracking system, and a multifocal module. The display assembly emits image light at a particular focal distance in accordance with multifocal instructions. The display assembly includes focal adjustment lenses and waveguide displays arranged in optical series and configured to emit light in accordance with the multifocal instructions. Different combinations of focal adjustment lenses are associated with different focal distances. Each waveguide display is separated from one or more adjacent waveguide displays by one or more of the plurality of focal adjustment lenses, and is associated with a unique combination of one or more of the focal adjustment lenses and a corresponding focal distance. The eye tracking system determines eye tracking information for a user's eye. The multifocal module generates the multifocal instructions based on the eye tracking information and provides the multifocal instructions to the display assembly.

Multi-planar display with waveguide and lens stacks

A near-eye display assembly presented herein includes an electronic display, an optical assembly, and scanning assembly. The electronic display has a first resolution. The optical assembly controls a field of view at an eye box and directs a plurality of light rays emitting from the electronic display toward the eye box. The scanning assembly shifts a direction of at least one of the light rays in accordance with emission instructions such that a virtual display is presented to the eye box, the virtual display having a second resolution greater than the first resolution. The display assembly can be implemented as a component of a head-mounted display of an artificial reality system.

Near-eye display assembly with enhanced display resolution

Provided are methods of switching guest-host dual frequency liquid crystals by using a back flow. In the case of a shutter having a dual frequency liquid crystal layer between two transparent substrates, such a method includes: applying a first voltage having a first frequency to the dual frequency liquid crystal layer; and applying a second voltage having a second frequency to the dual frequency liquid crystal, the second frequency being higher than the first frequency, wherein the second voltage is higher than a threshold voltage that generates a back flow around liquid crystals of the dual frequency liquid crystal layer, and the first voltage is lower than the threshold voltage.

Glenn Mangelinckx

Papers

Method of switching guest-host dual frequency liquid crystal by using back flow