An electromagnetic wave detection apparatus 10 includes a first propagation unit 16, a second propagation unit 17, a first detector 19, and a second detector 20. The first propagation unit 16 propagates electromagnetic waves incident on a reference surface ss in a particular direction using each pixel px. The second propagation unit 17 includes a first surface s1, a second surface s2, a third surface s3, a fourth surface s4, a fifth surface s5, and a sixth surface s6. The first surface s1 propagates electromagnetic waves incident from a first direction in a second direction and propagates electromagnetic propagated in a third direction in a fourth direction. The second surface s2 separates electromagnetic waves propagated in the second direction d2 and propagate electromagnetic waves in a third direction d3 and a fifth direction d5. The first detector 19 detects electromagnetic waves emitted from the third surface s3. The second detector 20 detects electromagnetic waves emitted from the sixth surface s6.

A device for two-dimensionally scanning beam deflection of a light beam has spectrally tunable light source that emits a light beam having a time-varying wavelength. The device further comprises a first optical component that produces a first beam deflection. The first beam deflection causes the light beam to be deflected wavelength-dependently in a first direction. A second optical component produces a second beam deflection which causes the light beam to be deflected in a second direction different to the first direction. The second optical component comprises a prism pair comprising two prisms that are rotatably arranged successively in a beam path of the light beam. The two prisms are configured to perform continuous counter-rotational movements.

A light transmissive optical component includes an electroactive material layer structure having a controlled deformation. When actuating the component, different relative thickness changes are implemented at different regions of the electroactive material layer thereby providing a non-uniform change in an optical function between those different regions.

A method and a system of adjusting a prism lens in a LiDAR system are provided. An exemplary method may include fitting a turning wheel on a half circle notch on a base plate onto which the prism lens is to be placed. The method may also include fitting a spring on a tail of the turning wheel. The method may further include placing the prism lens onto the base plate and turning the turning wheel until it engages with the prism lens. Additionally, the method may include fine adjusting the turning wheel to move the prism lens to a target location and then securing the prism lens at the target location.

A deflecting device and surveying instrument comprising a holding member having a ring shape; ring gears disposed on both sides of the holding member with the holding member interposed the ring gears, the ring gears being concentric with the holding member; bearings disposed between the holding member and the ring gears on both sides of the holding member, the bearings being concentric with the holding member; optical deflecting members disposed at central portions of the ring gears and integrated with the ring gears; deflection motors corresponding to the respective ring gears; and a drive transmitting member configured to transmit rotary force of the deflection motors to the ring gears.

A ladar transmitter that transmits ladar pulses toward a plurality of range points in a field of view can be controlled to target range points based on any of a plurality of defined shot list frames. Each defined shot list frame can identify various coordinates in the field of view that are to be targeted by a ladar pulses for a given ladar frame. A processor can process data about the field of view such as range data and/or camera data to make selections as to which of the defined shot list frames should be selected for a given frame of ladar data.

A hybrid LIDAR system 100 includes a flash-based LIDAR detector array. A broad laser emitter is operatively connected to the LIDAR detector array for flash-based LIDAR sensing. A first beam steering mechanism is operatively connected with the broad laser emitter for scanning a scene with a broad beam from the broad laser emitter. A second beam steering mechanism is operatively connected with the LIDAR detector array for directing returns of the broad beam from the scene to the LIDAR detector array.

An optical device according to an embodiment may include: a plurality of light sources configured to emit laser beams; a light direction changing unit comprising at least one of a prism and a mirror, provided on traveling paths of the laser beams, and configured to focus the laser beams at one point by changing travelling directions of the laser beams to form constant angles between the traveling paths of the laser beams; and a scanning mirror configured to perform two-dimensional scanning by reflecting the laser beams received from the light direction changing unit.

A light detection and ranging (LIDAR) system includes a first optical source to generate a first optical beam and a second optical source to generate a second optical beam. The first optical beam and the second optical beam are separated by a first spacing. The system further includes an optical system to receive the first optical beam and the second optical beam and reduce the first spacing between the first optical beam and the second optical beam to a second spacing and an output lens to transmit the first and second optical beams to scanner optics.

Disclosed are a laser scanning device, a radar device, and a scanning method thereof. The laser scanning device comprises a scanning prism comprising a plurality of scanning mirror surfaces, wherein the plurality of scanning mirror surfaces rotates about a scanning axis, a normal of each of the scanning mirror surfaces forms a certain angle with respect to the scanning axis, and the angles thereof are not all the same; a transceiving component comprising a laser transmitting unit and a laser receiving unit, wherein the laser transmitting unit generates a scanning line by rotation of the scanning mirror surfaces, and the same laser transmitting unit generates a plurality of scanning lines by rotation of the scanning prism.