In one embodiment, a lidar system includes a light source configured to emit pulses of light and a scanner configured to scan the emitted pulses of light across a field of regard of the lidar system. The scanner includes (i) a beam deflector configured to direct each emitted pulse of light along a first scan axis and (ii) a scan mirror configured to scan the emitted pulses of light along a second scan axis different from the first scan axis. The lidar system also includes a receiver that includes a one-dimensional detector array that includes multiple detector elements arranged along a direction corresponding to the first scan axis. The receiver is configured to (i) detect a received pulse of light that includes a portion of one of the emitted pulses of light scattered by a target and (ii) determine a time of arrival of the received pulse of light.

A light detection and ranging (LiDAR) system may include a laser and a array of single photon avalanche diodes (SPADs) that are triggered by laser light that reflects off a target scene. The LiDAR system may use the array of SPADs to assemble a raw histogram data. A histogram valid peak detector can be used to filter the raw histogram data to extract only valid histogram peak signals exceeding a threshold value. The histogram valid peak detector may include a raw histogram sum counter, a non-zero bins counter, a background noise floor generator, summing circuits, comparators, and a gating circuit, all controlled by a sequencing circuit. By filtering out noise signals in the raw histogram while only transferring the valid peak signals, data transfer rate requirements between different chips in the overall LiDAR system can be dramatically reduced.

A light detection and ranging (LiDAR) system may include a laser and a array of single photon avalanche diodes (SPADs) that are triggered by laser light that reflects off a target scene. The LiDAR system may use the array of SPADs to assemble a raw histogram data. A histogram valid peak detector can be used to filter the raw histogram data to extract only valid histogram peak signals exceeding a threshold value. The histogram valid peak detector may include a raw histogram sum counter, a non-zero bins counter, a background noise floor generator, summing circuits, comparators, and a gating circuit, all controlled by a sequencing circuit. By filtering out noise signals in the raw histogram while only transferring the valid peak signals, data transfer rate requirements between different chips in the overall LiDAR system can be dramatically reduced.

An optical device includes a transmitter, which emits a beam of optical radiation, and a receiver, which includes a detector configured to output a signal in response to the optical radiation. An active area of the detector has a first dimension along a first axis and a second dimension, which is less than the first dimension, along a second axis perpendicular to the first axis. An anamorphic lens, which collects and focuses the optical radiation onto the active area of the detector, has a first focal length in a first plane containing the first axis and a second focal length, greater than the first focal length, in a second plane containing the second axis. A scanner scans the beam across a target scene in a scan direction that is aligned with the first axis, and directs the optical radiation that is reflected from the target scene toward the receiver.

An optical device includes a transmitter, which emits a beam of optical radiation, and a receiver, which includes a detector configured to output a signal in response to the optical radiation. An active area of the detector has a first dimension along a first axis and a second dimension, which is less than the first dimension, along a second axis perpendicular to the first axis. An anamorphic lens, which collects and focuses the optical radiation onto the active area of the detector, has a first focal length in a first plane containing the first axis and a second focal length, greater than the first focal length, in a second plane containing the second axis. A scanner scans the beam across a target scene in a scan direction that is aligned with the first axis, and directs the optical radiation that is reflected from the target scene toward the receiver.

The present disclosure relates to thermal temperature measurement and facial recognition and discloses a gate mate comprising a detection passage system integrating temperature measurement and facial recognition, the gate mate comprises a face imaging camera lens, a thermopile sensor, a TOF (time-of-flight) optical ranging lens module, and an environmental temperature compensation module. The face imaging camera lens is used to detect and recognize human face and detect whether a front face of a measured person faces the face imaging camera lens. The thermopile sensor is used to detect a temperature of a forehead of the measured person and an environmental temperature. The TOF optical ranging lens module is used to detect a distance between the human face and the thermopile sensor. The environmental temperature compensation module is used to perform temperature compensation.

The present disclosure relates to thermal temperature measurement and facial recognition and discloses a gate mate comprising a detection passage system integrating temperature measurement and facial recognition, the gate mate comprises a face imaging camera lens, a thermopile sensor, a TOF (time-of-flight) optical ranging lens module, and an environmental temperature compensation module. The face imaging camera lens is used to detect and recognize human face and detect whether a front face of a measured person faces the face imaging camera lens. The thermopile sensor is used to detect a temperature of a forehead of the measured person and an environmental temperature. The TOF optical ranging lens module is used to detect a distance between the human face and the thermopile sensor. The environmental temperature compensation module is used to perform temperature compensation.

An image sensing device is provided to include a pixel array including unit pixel blocks that are arranged in a first direction and a second direction crossing the first direction, each unit pixel block configured to generate pixel signals in response to incident light reflected from a target object. The unit pixel block includes normal first pixel configured to receive a portion of the incident light at a first arrival time and generate a first pixel signal in response to the incident light, and a second pixel configured to receive another portion of the incident light at a second arrival time and generate a second pixel signal in response to the incident light. The second arrival time is later than the first arrival time.

A light detection and ranging (LIDAR) device including a plurality of illumination sources, each of the plurality of illumination sources configured to emit illumination light, an optical scanning device disposed in an optical path of the plurality of illumination sources, the optical scanning device configured to oscillate about a first axis to redirect the illumination light emitted by the plurality of illumination sources from the LIDAR device into a three-dimensional (3-D) environment, a plurality of photosensitive detectors, each of the plurality of photosensitive detectors configured to detect a respective portion of return light reflected from the 3-D environment when illuminated by a respective portion of the illumination light, and a scanning mechanism configured to rotate the optical scanning device about a second axis orthogonal to the first axis.

A light detection and ranging (LIDAR) device including a plurality of illumination sources, each of the plurality of illumination sources configured to emit illumination light, an optical scanning device disposed in an optical path of the plurality of illumination sources, the optical scanning device configured to oscillate about a first axis to redirect the illumination light emitted by the plurality of illumination sources from the LIDAR device into a three-dimensional (3-D) environment, a plurality of photosensitive detectors, each of the plurality of photosensitive detectors configured to detect a respective portion of return light reflected from the 3-D environment when illuminated by a respective portion of the illumination light, and a scanning mechanism configured to rotate the optical scanning device about a second axis orthogonal to the first axis.