A structured-light scanning system includes a structured-light source that generates an emitted polarized light with a predetermined pattern and a predetermined polarization, the emitted polarized light being then projected onto and reflected from a surface of an object, resulting in a reflected polarized light; a polarization modulator that adjusts polarization state of the reflected polarized light, resulting in a modulated polarized light; a polarizer that lets the modulated polarized light pass through while blocking other lights with polarizations different from the predetermined polarization, thereby outputting a filtered polarized light; and an image sensor that detects the filtered polarized light.

In a glasses-type display device according to an example of the present disclosure to solve the technical problems described above, there is provided a glasses-type display device including: a glasses frame including a lens fixing frame that fixes a lens disposed to correspond to the eye of a user, and a temple frame that extends from the lens fixing frame to serve as a temple; a dual camera module installed on the lens fixing frame and disposed to face a same viewpoint as that of the user; a display module installed at a lower end of the lens fixing frame to output an image to enter the eye of the user; and a glasses lens installed on the lens fixing frame to allow external light generated from a front to enter the eye of the user.

A structured-light scanning system includes a structured-light source that generates an emitted polarized light with a predetermined pattern and a predetermined polarization, the emitted polarized light being then projected onto and reflected from a surface of an object, resulting in a reflected polarized light; a polarizer that lets the reflected polarized light pass through while blocking other lights with polarizations different from the predetermined polarization, thereby outputting a filtered polarized light; and an image sensor that detects the filtered polarized light.

Provided is a polarization spectral filter, including: a first reflector and a second reflector disposed to face each other in a first direction; and a grating layer disposed between the first reflector and the second reflector. The grating layer includes a plurality of first grating elements and a plurality of second grating elements, the plurality of first grating elements and the plurality of second grating elements being alternately arranged in a second direction perpendicular to the first direction. The plurality of first grating elements include a first dielectric material having a first refractive index. The plurality of second grating elements include a second dielectric material having a second refractive index different from the first refractive index.

The present disclosure relates to a measuring system for measuring a light source in a polarization-independent manner, having a camera comprising a plurality of image sensors arranged in the form of a matrix, and a microscope optics, and to a method for measuring the light sources in a polarization-independent manner. The aim is to make it possible to measure the light output of the light source in an improved, simple and largely polarization-independent manner while maintaining the spatial resolution in the microscopic range. To that end, the present disclosure proposes that a linear polarizer is associated with each of the image sensors, wherein the linear polarizers are arranged in the form of a matrix in front of the image sensors and two or more, preferably four, polarizers form a matrix block, wherein the transmission directions of adjacent linear polarizers within a matrix block are rotated relative to one another, preferably by 45° or by 90°. In the method according to the present disclosure, the measurement signals of the image sensors that are associated with the polarizers of the same matrix block are converted into light output measured values in order to obtain the desired polarization independence.

An integrated imaging display device, including: a display component, and a micro-lens array and a low-pass filter disposed on a light-emitting side of the display component. The display component includes a plurality of display units; and the micro-lens array includes a plurality of micro-lenses corresponding to the plurality of display units.

Provided is a system of projection of a virtual image on a screen with the effect of eliminating the influence of solar radiation, the system that polarizes solar radiation in an optical path along which solar radiation is delivered to a display through a screen, eliminates and filters out ultraviolet and infrared components, and transmits only radiation of an operating range of the display to the display.

Provided are a nonlinear polarization filtering method, device, and apparatus. The device comprises a pump source, a coupler, a birefringent medium, and several polarizers; wherein the pump source is applied to output a pump laser, so as to make a photo-induced birefringence effect occur at the birefringent medium; the polarizer is applied to polarize a signal light according to a preset polarizing angle; and the coupler is applied to couple the pump laser and the signal light into the birefringent medium, wherein an angle except 0° exists between the birefringent medium and the preset polarizing angle of the polarizer.

A sensor includes a first image pixel array including first image pixels and a second image pixel array including second image pixels. A polarization layer is disposed between the first image pixels and the second image pixels. Scene light incident upon the second image pixels propagates through the first image pixels and the polarization layer to reach the second image pixels.

A multi-conjugate filter (MCF) can be operated in both a single bandpass mode and a multiple bandpass mode. By applying different voltages to different channels of a MCF, the MCF can be used to filter light into (1) a single narrow spectral output or (2) a broad ranged “white light” spectral output.