A system and method are provided for spectral shaping of light from a broadband source including multiple wavelengths. The system includes a beam splitter (BS) to receive and transmit an input beam, a dispersive element to disperse the input beam into dispersed beams separated by wavelength, and optic-elements to direct the dispersed beams onto a spatial light modulator (SLM). The SLM selectively modulates the dispersed beams reflected from the SLM, and the optic elements transmit a 0.sup.th-order of the reflected light through the dispersive element, which recombines the beams to form a reflected beam directed toward the BS. The BS separates the reflected beam from the input beam and directs it to an optical output of the system. The SLM includes multiple electrostatically deflectable reflective ribbons suspended over a reflective surface of a substrate, wherein the ribbons are separated by a distance equal to a width of the ribbons.

A light source device includes: a plurality of laser sources; a plurality of collimating parts, each configured to collimate the light beam emitted from a corresponding one of the laser sources; a combining grating configured to diffract, at an identical diffraction angle, light beams that have passed through the collimating parts and are incident on the combining grating at different incident angles to combine the diffracted light beams; and a plurality of volume holographic gratings, wherein each of the volume holographic gratings is disposed in an optical path between a corresponding one of the laser sources and the combining grating, wherein each of the volume holographic gratings determines a wavelength of the light beam incident on the combining grating, and wherein each of the volume holographic gratings is configured to diffract a portion of the light beam emitted from a corresponding laser source back to the laser source.

Provided are a hyperspectral sensor and a hyperspectral camera in which influence of external information such as a reflecting material is reduced such that the spectral data accuracy of a subject to be acquired can be improved. In the hyperspectral sensor in which light from a subject is split into light components in a plurality of wavelength ranges by a spectral optical element and each of the light components in the wavelength ranges is received by a sensor array consisting of a plurality of photodetection elements to acquire spectral data in which spectral information of the subject is associated with each of the photodetection elements, a polarization diffraction element that emits polarized light is used as the spectral optical element.

A device utilized for spectrally combining multi lasers or laser emitters into a single high-power beam. Exemplary embodiments of the device consist of a monolithic structure, such as a hollow tube, wherein the input end cap comprises a transform optic and the output end cap comprises a transmission grating.

Aspects described herein include an optical apparatus comprising an input port configured to receive an optical signal comprising a plurality of wavelengths, and a plurality of output ports. Each output port is configured to output a respective wavelength of the plurality of wavelengths. The optical apparatus further comprises a first plurality of two-mode Bragg gratings in a cascaded arrangement. Each grating of the first plurality of two-mode Bragg gratings is configured to reflect a respective wavelength of the plurality of wavelengths toward a respective output port of the plurality of output ports, and transmit any remaining wavelengths of the plurality of wavelengths.

Methods, apparatus, devices, and systems for displaying three-dimensional objects by individually diffracting different colors of light are provided. In one aspect, an optical device includes: a first optically diffractive component including a first diffractive structure configured to diffract a first color of light having a first incident angle at a first diffracted angle, a second optically diffractive component including a second diffractive structure configured to diffract a second color of light having a second incident angle at a second diffracted angle, a first reflective layer configured to totally reflect the first color of light having the first incident angle and transmit the second color of light, and a second reflective layer configured to totally reflect the second color of light having the second incident angle. The first reflective layer is between the first and second diffractive structures, and the second diffractive structure is between the first and second reflective layers.

The light extraction device, the detection equipment and the operation method thereof are provided. The light extraction device includes at least one light splitting unit, each of the at least one light splitting unit includes a color separation grating, configured to separate light incident on the color separation grating into a plurality of light beams that are collimated and propagated in different directions and have different colors; a first lens, disposed corresponding to the color separation grating and configured to converge the plurality of light beams; and a first pinhole, located on a side of the first lens away from the color separation grating and correspondingly arranged with the first lens. The first lens is configured to converge a light beam having a preset color in the plurality of light beams to the first pinhole and allow the light beam having the preset color to exit.

A spectroscopic device may include a light source part configured to emit a first light toward a target object, the light source part including a main light source and a plurality of auxiliary light sources, a diffraction part including a diffraction grating configured to diffract a second light that is produced based on the first light being reflected from the target object, the diffraction grating configured to produce a third light that is the diffracted second light, a detection part configured to detect the third light, and an analyzing part connected to the detection part. The detection part may include a plurality of pixels and an actuator. The plurality of auxiliary light sources may be configured to emit light rays of different wavelengths. The actuator may be configured to rotate and move the detection part.

A system for testing a spectral response speed of a tunable filter is disclosed, which includes a collimating light source, a beam splitting element, a focusing lens, and an image recording device of light spot position arranged successively. The tunable filter is disposed between the collimating light source and the beam splitting element and configured to be continuously tuned within a certain wavelength range during testing. The beam splitting element is used to form light beams of different wavelength bands passing through the tunable filter into diffracted beams or refracted beams corresponding to different wavelength bands. The focusing lens is used to perform focusing. The image recording device of light spot position is used to record change information about positions where the diffracted beams or refracted beams corresponding to different wavelength bands are imaged.

To provide a display apparatus that can display an image at a wide angle of view while preventing the display apparatus from being made larger in size. The present technology provides a display apparatus that includes a light-emitting system that emits image light that includes a plurality of pieces of light of different wavelengths; a light guiding system that guides the image light emitted by the light-emitting system; and a light deflecting system that deflects the plurality of pieces of light included in the image light guided by the light guiding system, and causes the plurality of pieces of deflected light to be incident on an eyeball from different directions. The present technology makes it possible to provide a display apparatus that can display an image at a wide angle of view while preventing the display apparatus from being made larger in size.