Pulsed fluorescence imaging in a light deficient environment is disclosed. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation. The system includes a controller configured to synchronize timing of the emitter and the image sensor. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises electromagnetic radiation having a wavelength from about 795 nm to about 815 nm.

The present disclosure relates to systems and methods that provide both an image of a scene and depth information for the scene. An example system includes at least one time-of-flight (ToF) sensor and an imaging sensor. The ToF sensor and the imaging sensor are configured to receive light from a scene. The system also includes at least one light source and a controller that carries out operations. The operations include causing the at least one light source to illuminate at least a portion of the scene with illumination light according to an illumination schedule. The operations also include causing the at least one ToF sensor to provide information indicative of a depth map of the scene based on the illumination light. The operations additionally include causing the imaging sensor to provide information indicative of an image of the scene based on the illumination light.

A high-speed laser distance measuring device is described that includes an emitting part and a receiving part. The emitting part can include a polarizer (2) arranged between a light emitting tube (1) and a reflective mirror (3); the receiving part can further include a polarizing beamsplitter (7) arranged between the optical filter (6) and the receiving tube set. The light emitting tube (1) can emit an outgoing light beam to the polarizer (2), and the outgoing light beam can form an outgoing polarized light beam and is transmitted into the reflective mirror (3). After being reflected by the reflective mirror (3) and passing through the transmitting objective lens (4), the outgoing polarized light beam can be transmitted onto a target object. After being reflected by the target object, the outgoing polarized light beam can form a reflected polarized light beam, which passes through the receiving objective lens set (5) and is transmitted to the optical filter (6). After being filtered, the reflected polarized light beam is transmitted into the polarizing beamsplitter (7), and is split into a first reflected polarized light beam and a second reflected polarized light beam, which are transmitted into the first receiving tube (8), and the second receiving tube (9) respectively. The high-speed laser distance measuring device can identify the light formed by the reflection of an oriented reflective target and a target object, and can adopt different receiving means for receiving them. Simultaneously, it can effectively filter the interference caused by particulate matter in the test environment to the test.

Pulsed fluorescence imaging in a light deficient environment is disclosed. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation. The system includes a controller configured to synchronize timing of the emitter and the image sensor. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises electromagnetic radiation having a wavelength from about 770 nm to about 790 nm or from about 795 nm to about 815 nm.

A detector (110, 1110, 2110) for determining a position of at least one object (112) is proposed. The detector (110, 1110, 2110) comprises: at least one transfer device (128, 1128), wherein the transfer device (128, 1128) has at least one focal length in response to at least one incident light beam (116, 1116) propagating from the object (112, 1112) to the detector (110, 1110, 2110); at least two optical sensors (113, 1118, 1120), wherein each optical sensor (113, 1118, 1120) has at least one light sensitive area (121, 1122, 1124), wherein each optical sensor (113, 1118, 1120) is designed to generate at least one sensor signal in response to an illumination of its respective light-sensitive area by the light beam (116, 1116), at least one evaluation device (132, 1132) being configured for determining at least one longitudinal coordinate z of the object (112, 1112) by evaluating a quotient signal Q from the sensor signals.

The detector is adapted to determine the longitudinal coordinate z of the object in at least one measurement range independent from the object size in an object plane.

Systems and methods are provided for identifying a drivable area in front of a vehicle. A three-dimensional measurement sensor captures three-dimensional data corresponding to an area in front of the vehicle. Processing circuitry compares the captured three-dimensional data with a three-dimensional ground model to identify at least one obstacle and determine a drivable area in front of the vehicle based on the comparison.

A time-of-flight camera has; an illumination source for illuminating a scene; an image sensor for detecting light; and a processor configured to: control the image sensor for scanning a scene for detecting illumination; determine a time slot for illumination of the scene, based on the scanning result of the scene; and control the illumination source to illuminate the scene in the determined time slot, based on a time-division multiple access scheme.

An apparatus for determining at least one spatial position and orientation of at least one object with at least three retroreflectors is provided. The apparatus has at least one LIDAR unit with at least three measurement channels. The LIDAR unit has at least one illumination device, which is configured to produce at least one frequency modulated input light beam. The LIDAR unit has at least one first beam splitter, wherein the first beam splitter is configured to divide the input light beam among the measurement channels in parallel and/or in sequence. The measurement channels are each configured to produce at least one measurement signal. The LIDAR unit is configured to produce at least one LIDAR signal for the measurement signals. The apparatus has at least one evaluation unit, which is configured to determine the spatial position and orientation of the object from the LIDAR signal.

A LIDAR system includes a laser source, a first scanner, and a second scanner. The first scanner receives a first beam from the laser source and applies a first angle modulation to the first beam to output a second beam at a first angle. The second scanner receives the second beam and applies a second angle modulation to the second beam to output a third beam at a second angle.

Embodiments of the disclosure provide an optical sensing system, a range estimation system for the optical sensing system, and a method for the optical sensing system. The exemplary optical sensing system includes a transmitter configured to emit a laser pulse towards an object. The optical sensing system further includes a range estimation system configured to estimate a range between the object and the optical sensing system. The range estimation system includes an analog to digital converter (ADC) configured to generate a plurality of pulse samples based on the laser pulse returned from the object. The returned laser pulse has a substantially triangular waveform including a rising edge and a falling edge. The range estimation system further includes a processor. The processor is configured to generate synthesized pulse samples on the substantially triangular waveform based on the pulse samples. The processor is further configured to determine an arrival time of the returned laser pulse based on the ADC generated pulse samples and the synthesized pulse samples. The processor is also configured to estimate a range between the object and the optical sensing system based on the arrival time of the returned laser pulse.