A system includes a high energy laser (HEL) configured to transmit a HEL beam and a beacon illumination laser (BIL) configured to transmit a BIL beam. The system also includes at least one fast steering mirror (FSM) configured to steer the BIL beam to be offset from the HEL beam. The system further includes at least one Coudé path FSM configured to correct for atmospheric jitter of the HEL beam and the BIL beam while maintaining the offset of the BIL beam from the HEL beam.

A light source device that supplies light in a specific polarization direction to an information display device includes a point-shaped or planar light source, an optical means for reducing the divergence angle of light from the light source, and a light guide having a reflection surface that reflects light from the light source to propagate to the information display device. The reflection surface of the light guide is arranged so as to face the information display device, and reflects specific polarized image light displayed on the information display device to be displayed on the window glass, which is an information display surface. Therefore, an information display system is realized in which the inside of the window glass can be visually recognized from the outside or the outside of the window glass can be visually recognized from the inside when image information is not displayed.

A light source device that supplies light in a specific polarization direction to an information display device includes a point-shaped or planar light source, an optical means for reducing the divergence angle of light from the light source, and a light guide having a reflection surface that reflects light from the light source to propagate to the information display device. The reflection surface of the light guide is arranged so as to face the information display device, and reflects specific polarized image light displayed on the information display device to be displayed on the window glass, which is an information display surface. Therefore, an information display system is realized in which the inside of the window glass can be visually recognized from the outside or the outside of the window glass can be visually recognized from the inside when image information is not displayed.

Examples are disclosed herein relating to signal processing in a time of flight (ToF) system. One example provides, a method comprising emitting, via a light source, amplitude-modulated light toward an object, acquiring, via an image sensor comprising a plurality of pixels, a plurality of image frames capturing light emitted from the light source that is reflected by the object, wherein the plurality of image frames are acquired at two or more different frequencies of the amplitude-modulated light and collectively form a multifrequency frame, and for each pixel of the multifrequency frame, determining a brightness level, applying an adaptive denoising process by setting a kernel size based on the brightness level, and performing a phase unwrapping process to determine a depth value for the pixel.

Examples are disclosed herein relating to signal processing in a time of flight (ToF) system. One example provides, a method comprising emitting, via a light source, amplitude-modulated light toward an object, acquiring, via an image sensor comprising a plurality of pixels, a plurality of image frames capturing light emitted from the light source that is reflected by the object, wherein the plurality of image frames are acquired at two or more different frequencies of the amplitude-modulated light and collectively form a multifrequency frame, and for each pixel of the multifrequency frame, determining a brightness level, applying an adaptive denoising process by setting a kernel size based on the brightness level, and performing a phase unwrapping process to determine a depth value for the pixel.

An electromagnetic wave imaging method, system, and apparatus are provided. The method includes collecting an electromagnetic echo signal, where the electromagnetic echo signal is used to indicate electromagnetic wave scattering feature information of a target object, obtaining location information of a reception point of the electromagnetic echo signal, where the location information indicates relative location information between the reception point and a positioning label, and performing electromagnetic wave imaging on the target object based on the electromagnetic wave scattering feature information and the location informati

A beam scanning apparatus includes a light source configured to emit light, and a reflective phased array device configured to reflect the light emitted from the light source and incident on the reflective phased array device, and electrically adjust a reflection angle of the reflected light reflected by the reflective phased array device, wherein the light source and the reflective phased array device are disposed such the light is incident on the reflective phased array device at an incidence angle with respect to a normal of a reflective surface of the reflective phased array device.

A beam scanning apparatus includes a light source configured to emit light, and a reflective phased array device configured to reflect the light emitted from the light source and incident on the reflective phased array device, and electrically adjust a reflection angle of the reflected light reflected by the reflective phased array device, wherein the light source and the reflective phased array device are disposed such the light is incident on the reflective phased array device at an incidence angle with respect to a normal of a reflective surface of the reflective phased array device.

An apparatus comprising means for: causing illumination of different areas of a sample with an optical frequency imaging beam at different positions at different times, wherein adjacent positions are configured to cause the corresponding areas to at least partially overlap;receiving signals indicative of back-scattering of the optical frequency imaging beam from the sample at the different times; and processing the received signals to obtain an image of the sample, wherein processing the received signals compensates for phase variations between the different positions at the different times using a matched filter derived from a scattering model of the sample.

Examples are disclosed herein relating to signal processing in a time-of-flight (ToF) system. One example provides, a method comprising emitting, via a light source, amplitude-modulated light toward an object, acquiring, via an image sensor comprising a plurality of pixels, a plurality of image frames capturing light emitted from the light source that is reflected by the object, wherein the plurality of image frames are acquired at two or more different frequencies of the amplitude-modulated light and collectively form a multifrequency frame, and for each pixel of the multifrequency frame, determining a brightness level, applying an adaptive denoising process by setting a kernel size based on the brightness level, and performing a phase unwrapping process to determine a depth value for the pixel.