An optical device includes: a substrate having a first surface, and a second surface opposite of the first surface; a plurality of surface emitting laser elements provided on the first surface of the substrate and configured to emit light in a direction intersecting the first surface; a plurality of optical elements disposed on the second surface so as to respectively correspond to the plurality of surface emitting laser elements; and an anti-reflection structure between the substrate and the plurality of optical elements.

An optical device includes: a substrate having a first surface, and a second surface opposite of the first surface; a plurality of surface emitting laser elements provided on the first surface of the substrate and configured to emit light in a direction intersecting the first surface; a plurality of optical elements disposed on the second surface so as to respectively correspond to the plurality of surface emitting laser elements; and an anti-reflection structure between the substrate and the plurality of optical elements.

A LIDAR noise removal apparatus and a LIDAR noise removal method thereof are provided. The apparatus includes a LIDAR detection information processor that processes LIDAR detection information received from a LIDAR of a vehicle. A sun position acquirer acquires an azimuth angle and elevation angle of the sun relative to a traveling direction of the vehicle. An ROI selector selects an ROI corresponding to the sun from a front image of the vehicle based on the azimuth angle and elevation angle and compares a brightness of the selected ROI with a threshold value. A noise region selector selects a noise region corresponding to the ROI from the LIDAR detection information based on the azimuth angle and elevation angle when the brightness of the ROI exceeds the threshold value, and a noise remover removes noise points in the selected noise region.

A LIDAR noise removal apparatus and a LIDAR noise removal method thereof are provided. The apparatus includes a LIDAR detection information processor that processes LIDAR detection information received from a LIDAR of a vehicle. A sun position acquirer acquires an azimuth angle and elevation angle of the sun relative to a traveling direction of the vehicle. An ROI selector selects an ROI corresponding to the sun from a front image of the vehicle based on the azimuth angle and elevation angle and compares a brightness of the selected ROI with a threshold value. A noise region selector selects a noise region corresponding to the ROI from the LIDAR detection information based on the azimuth angle and elevation angle when the brightness of the ROI exceeds the threshold value, and a noise remover removes noise points in the selected noise region.

A light detection and ranging (LIDAR) device according to one embodiment of the present disclosure includes: a light transmitting unit including a plurality of laser transmission channels for transmitting laser light for detecting an external object in an allocated transmission time slot; a light receiving unit including a plurality of laser reception channels for receiving the laser light reflected by the external object in a reception time slot allocated to correspond to the transmission time slot, N laser reception channels (N is a natural number greater than or equal to 2) being allocated to each of the reception time slots; and a signal amplification unit configured to sequentially amplify the laser light received by the light receiving unit according to the order of the reception time slots, and having N channels allocated in one-to-one correspondence with the N laser reception channels for each of the reception time slots.

A light detection and ranging (LIDAR) device according to one embodiment of the present disclosure includes: a light transmitting unit including a plurality of laser transmission channels for transmitting laser light for detecting an external object in an allocated transmission time slot; a light receiving unit including a plurality of laser reception channels for receiving the laser light reflected by the external object in a reception time slot allocated to correspond to the transmission time slot, N laser reception channels (N is a natural number greater than or equal to 2) being allocated to each of the reception time slots; and a signal amplification unit configured to sequentially amplify the laser light received by the light receiving unit according to the order of the reception time slots, and having N channels allocated in one-to-one correspondence with the N laser reception channels for each of the reception time slots.

A Light Detection and Ranging (LiDAR) module for a vehicle can include a semiconductor integrated circuit with a microelectromechanical system (MEMS) and a substrate, the MEMS comprising a micro-mirror assembly including a mirror and a gimbal structure. The gimbal can be configured concentrically around and coplanar with the mirror. When rotated, the gimbal drives the mirror to oscillate at or near a resonant frequency and is coupled to the mirror via mirror-gimbal connectors. A support structure can be coupled to a backside of the mirror and gimbal structures and can increase the stiffness of the mirror to help the mirror better resist dynamic deformation. To limit the added rotational moment of inertia, the support structure can be etched to form a matrix of cells (e.g., formed by a mesh of circumferential and radial ridges) such that up to approximately 90% of the support structure material forming the support structure is removed.

An object detector includes a light-emitting system and a light-receiving system. The light-emitting system includes a light source including a plurality of light-emitting elements disposed in one-axis direction. The light-emitting system emits light. The light-receiving system receives the light emitted from the light-emitting system and reflected by an object. The plurality of light-emitting elements emits a plurality of light beams to a plurality of areas differing in the one-axis direction. The amount of light to illuminate some of the plurality of areas is different from the amount of light to illuminate other area other than the some of the plurality of areas.

Optical proximity sensors, methods for use therewith, and systems including optical proximity sensor are described herein. Such an optical proximity sensor includes a light source and a light detector, wherein the light detector includes a plurality of individually selectable photodiodes (PDs). During a calibration mode, individual PDs of the plurality of PDs of the light detector are tested to identify which PDs are crosstalk dominated. During an operation mode, the PDs of the light detector that were not identified as being crosstalk dominated are used to produce a light detection value or signal that is useful for detecting the presence, proximity and/or motion of an object within the sense region of the optical proximity sensor. By not using the PDs that were identified as being crosstalk dominated, the signal-to-noise ratio of the light detection value or signal is improved compared to if the crosstalk dominated PDs were also used.

A clutter filter configuration tool for a safety laser scanner. The clutter filter configuration tool may first operate the safety laser scanner in an environment to learn the environmental clutter level and present the same to a user. Subsequent to this “teach-in” phase, the configuration tool may provide a clutter filter selection process which presents the environmental clutter level to the user and allows the user to select a suitable configuration for a clutter filter. The configuration tool may also provide a clutter filter simulation process wherein the clutter filter chosen by the user is verified and a test is performed using the selected clutter filter. The results may be reported on a visualized graph. The configuration tool may also determine a real area to be monitored utilizing a floor projection area and an orientation of the laser scanner.