In some embodiments, a depth map acquisition system, includes a housing, a light source for emitting light to illuminate objects in a scene subject to depth mapping, fixedly mounted to the housing, a mirror tilt actuator, fixedly mounted to the housing, for tilting a mirror fixedly mounted to the mirror tilt actuator, a mirror fixedly mounted to the mirror tilt actuator, for reflecting light from the light source to the objects, and a partially transparent photosensitive detector in the direct path of the light from the mirror to the objects.

An image display apparatus mountable on a mobile object includes an image light generator and a transmissive member. The image light generator is configured to generate image light and emit the image light to a transmission and reflection member mounted on the mobile object. The transmissive member is disposed in an optical path of the image light between the image light generator and the transmission and reflection member. The transmissive member is configured to transmit the image light from the image light generator. The transmissive member has a cross section with a predetermined curve, the cross section being orthogonal to a predetermined direction inclined with reference to a virtual plane orthogonal to a horizontal direction of the mobile object.

A lidar system includes one or more light sources configured to generate a first beam of light and a second beam of light, a scanner configured to scan the first and second beams of light across a field of regard of the lidar system, and a receiver configured to detect the first beam of light and the second beam of light scattered by one or more remote targets. The scanner includes a rotatable polygon mirror that includes multiple reflective surfaces angularly offset from one another along a periphery of the polygon mirror, the reflective surfaces configured to reflect the first and second beams of light to produce a series of scan lines as the polygon mirror rotates. The scanner also includes a pivotable scan mirror configured to (i) reflect the first and second beams of light and (ii) pivot to distribute the scan lines across the field of regard.

Implementations described and claimed herein provide a mechanically-scanning 3-dimensional light detection and ranging (3D LiDAR) system including a galvo mirror assembly, wherein the galvo mirror assembly includes a mirror attached to an armature of a galvanometer to reflect a light signal generated by a light generator and received from a target, at least one permanent magnet, and at least one coil configured to carry a current to move the armature.

A microelectromechanical systems (MEMS) scanning device comprising a torsional beam flexure that has a variable width in relation to a rotational axis for a scanning mirror. The geometric properties of the torsional beam vary along the rotational axis to increase a desired mode of mechanical strain at a location where a strain sensor is operating within the MEMS scanning device to generate a feedback signal. The torsional beam flexure mechanically suspends the scanning mirror from a frame structure. During operation of the MEMS scanning device, actuators induce torsional deformation into the torsional beam flexure to cause rotation of the scanning mirror about the rotational axis. The degree or amount of this torsional deformation is directly related to the angular position of the scanning mirror and, therefore, the desired mode of mechanical strain may be this torsional deformation strain component.

According to an example aspect of the present invention, there is provided a lens for a Microelectrical System, MEMS, mirror apparatus, comprising a circular top surface, the circular top surface being provided with a recess having an inclined surface extending from the circular top surface and a side wall having an inclined section extending from the circular top surface, wherein the inclined section is inclined towards the recess and the inclined surface is inclined outward of the recess towards the inclined section.

A method of scanning a laser over a field of view, the method comprising: providing a laser to produce the laser beam; rasterizing the laser beam over a first sub-area of the field of view; deflecting the laser beam to a second sub-area of the field of view; and rasterizing the laser beam over the second sub-area of the field of view; and capturing image information produced by the laser beam so that, for each sub-area of the field of view, the rasterized laser beam defines a plurality of image segments; for each segment calculating an image correction and applying a correction to the laser according to the calculated image correction for the segment, and corresponding system.

Disclosed are a lidar, and a detection method for the lidar. The lidar includes a plurality of laser transceiver module groups, each configured to be integrated with at least one laser transmitting end and at least one laser receiving end, and a scanning module. The plurality of laser transceiver module groups are arranged in a distributed manner relative to the scanning module, and an at least partially stitched field of view of the lidar is formed by sub-fields of view correspondingly formed by the plurality of laser transceiver module groups. Further disclosed are a lidar and a manufacturing method for the lidar. The lidar includes a laser transmitting end, a laser receiving end, a scanning module and an isolation mechanism. A scanning component of the scanning module is constructed as a rotatable plate-shaped double-faceted mirror or a rotatable prism.

A near-eye display system employs a low-amplitude, low-frequency micro-electromechanical system (MEMS) mirror in series with a higher-amplitude, higher-frequency resonant MEMS mirror to rotate at a reduced amplitude and frequency with respect to the resonant MEMS mirror redistribute illumination pulses or pixels at the extents of a sinusoidal angular scan pattern of the resonant MEMS mirror.

A head-up display device and a transportation device are provided. The head-up display device includes a light source, a scanner configured to scan light emitted from the light source to form scanned light, an angle adjuster configured to change an exit angle of the scanned light, a display unit configured to form an image according to the scanned light from the angle adjuster, and a projection assembly configured to project the image formed on the display component to a selected area.