Systems, methods, and computer-readable media are disclosed for a systems and methods for intra-shot dynamic LIDAR detector gain. One example method my include emitting, by an optical ranging system at a first time, a first light pulse. The example method may also include increasing, after the first time, a sensitivity of a photodetector of the optical ranging system from a first sensitivity at the first time to a second sensitivity at a second time. The example method may also include decreasing the sensitivity of the photodetector of the optical ranging system from the second sensitivity at third time to the first sensitivity at a fourth time, wherein the fourth time is after the photodetector receives return light based on the first light pulse. The example method may also include emitting, by the optical ranging system at the fourth time, a second light pulse.

An electronic apparatus and a control method thereof are provided. The electronic apparatus includes a sensor; and a processor configured to obtain, from the sensor, first information related to a distance to an object and second information related to reliability of the first information, identify at least one cell not including distance information, among a plurality of cells corresponding to a plurality of pixels constituting the sensor, based on the first information, determine a reliability of the at least one cell based on the second information, change a parameter setting of the sensor based on the determined reliability, obtain, from the sensor of which the parameter setting is changed, third information related to the distance to the object, obtain fourth information including the distance information of the plurality of cells based on the first information and the third information, and obtain the distance to the object based on the distance information included in the fourth information.

Provided is an electro-optical distance meter includes: a first light emitting element transmitting a distance measurement light modulated based on main modulation frequencies F2, F3 to a distance measurement optical path; a second light emitting element transmitting a reference light modulated with adjacent modulation frequencies F2+b.Math.F2, F3+b.Math.F3 close to the main modulation frequencies F2, F3 to a reference optical path; a light receiving element receiving a distance measurement light and a reference light; and frequency converters receiving inputting of a light reception signal based on the distance measurement light and the reference light and signals of local frequencies 2+a.Math.F2, F3+a.Math.F3, and generate a distance measurement intermediate frequency signal based on the distance measurement light and a reference intermediate frequency signal based on the reference light. A distance to a target reflection object is calculated by subtracting the reference intermediate frequency signal from the distance measurement intermediate frequency signal.

A detection device for a coherent imaging system includes a detector comprising a matrix array of pixels, each pixel comprising a photodetector component having a photosensitive surface, the detector being designed to be illuminated by a coherent beam, called the image beam consisting of grains of light called speckle grains, a matrix array of transmissive deflecting elements configured to be individually orientable by means of an electrical signal, so as to deflect a fraction of the image beam incident on the group, and thus modify the spatial distribution of the speckle grains in the plane of the photosensitive surface, each group of one or more pixels further comprising a feedback loop associated with the deflecting element and configured to actuate the deflecting element so as to optimize the signal-to-noise ratio from the light detected by the one or more photodetector components of the group of pixels, the feedback loop comprising a feedback circuit.

A time-of-flight imaging system may output light with a modulation frequency in the gigahertz band, to illuminate a range target. This high-frequency illumination may enable extremely precise—e.g., micron-scale—depth measurements. The system may modulate reflected light from the range target, to create a beat tone that has a frequency in the hertz band. In some cases, the modulated light in the gigahertz band is created by a first modulator and the beat tone in the hertz band is created by a second modulator. In some cases, the modulated light in the gigahertz band is created by an upshift cascade of modulators and the beat tone in the hertz band is created by a downshift cascade of modulators. A photodetector may measure the low-frequency beat tone. From this beat tone, phase of the signal and depth of the range target may be extracted.

The present disclosure generally relates to laser range finders. In one embodiment, a shallow-trench isolation diode operates in a reverse-biased mode. In another embodiment, a poly-defined diode operates in a forward-biased mode. In both embodiments, the diode emits photons in response to a radio frequency current, and the photons are received by an avalanche photo diode during a calibration process.

A coherent lidar imaging system includes a laser source, a detection device, a first optical device, an optical imaging system, a second optical device, the photodetector component of a pixel being configured so as to generate a pixel detected signal, the pixel detected signal having an intensity, called pixel total intensity, the splitter having a variable first transmittance that is identical for all of the pixels and modulable, the second optical device furthermore comprising at least one intensity modulator designed to modulate an intensity of each pixel reference beam by applying a modulable pixel transmittance, the coherent lidar imaging system furthermore comprising a processing unit configured so as to apply a first transmittance value and, for each pixel, a pixel transmittance value, the values being determined via a control loop and using an optimization criterion, the optimization criterion comprising obtaining, for each pixel, a pixel total intensity less than a threshold intensity, and obtaining an improved signal-to-noise ratio.

An exposure method and an image sensing device using the same are provided. The exposure method includes the following steps: obtaining a first light-intensity confidence value of each pixel unit based on a first exposure time; obtaining a second light-intensity confidence value of each pixel unit based on a second exposure time, wherein the second light-intensity confidence value is different from the first light-intensity confidence value; and taking the phase difference value, corresponding to one of the light-intensity confidence value and the second light-intensity confidence value of each pixel unit, as an output value of the corresponding pixel unit.

A camera device according to an embodiment of the present invention includes: an light output unit which outputs output light signals to be emitted to an object and includes a plurality of light sources arrayed according to predetermined rules; a lens unit which includes an infrared (IR) filter and at least one lens disposed on the IR filter, and focuses input light signals reflected from the object; an image sensor which generates electrical signals from the input light signals focused by the lens unit; an image processing unit which acquires depth information about the object by using phase differences or time differences between the output light signals and the input light signals received in the image sensor; and a control unit which controls the light output unit, the lens unit, the image sensor, and the image processing unit, wherein the plurality of light sources are divided into at least two light source groups, the control unit controls the output light signals to be output sequentially for each light source group, the image sensor includes at least two pixel groups divided for each of the light source groups, and the control unit controls the input light signals to be focused sequentially for each pixel group.

A LIDAR system is provided. The LIDAR system includes an emitter. The emitter includes a light source and one or more lenses positioned along a transmit path. The light source is configured to emit a primary laser beam through the one or more lenses in the transmit path to provide a transmit beam. The LIDAR system includes a receiver spaced apart from the emitter. The receiver includes one or more lenses positioned along a receive path such that the one or more lenses receive a reflected laser beam. The LIDAR system includes an optical element positioned along the transmit path. The optical element is configured to direct a portion of the primary laser beam in a direction towards the receive path as a secondary laser beam.