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Photoelectric detection device, laser radar including same, and detection method using same

A technology for photoelectric detection and photon detection efficiency, which is applied in measurement devices, re-radiation of electromagnetic waves, radio wave measurement systems, etc. It can solve the problems of inconsistent dynamic response and small dynamic response range of SPADs, and achieve improved dynamic response range and performance. , the effect of reducing resources and power consumption

Pending Publication Date: 2022-03-04
HESAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention makes the dynamic responses of different SPADs inconsistent by changing the area size of the photosensitive surface or the loaded bias voltage, and solves the problem that the dynamic response range of the SPADs array is small as the receiving end of the laser radar

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  • Photoelectric detection device, laser radar including same, and detection method using same
  • Photoelectric detection device, laser radar including same, and detection method using same
  • Photoelectric detection device, laser radar including same, and detection method using same

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Embodiment Construction

[0033] In the following, only some exemplary embodiments are briefly described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and descriptions are to be regarded as illustrative in nature and not restrictive.

[0034] In describing the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", etc. or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orie...

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Abstract

The invention provides a photoelectric detection device which comprises a plurality of pixels, at least one pixel comprises a plurality of detectors which are configured to receive incident optical signals and convert the incident optical signals into electric signals, and the photon detection efficiencies of the detectors are not completely the same; and the processing unit is coupled with the detector to receive the electric signal, and is configured to process and output the electric signal. According to the embodiment of the invention, the dynamic range of the laser radar receiving end is improved, and the performance of the laser radar is improved.

Description

technical field [0001] The present invention generally relates to the field of optoelectronic technology, and in particular to a photoelectric detection device, a laser radar including the photoelectric detection device and a detection method using the photoelectric detection device. Background technique [0002] Single-photon detection technology has the advantages of ultra-high sensitivity and ultra-fast response speed, and can detect the smallest energy particles of light. It is currently a more important detection method. The energy of a single photon is extremely small. To detect a single photon, special optoelectronic devices must be used. A single photon avalanche diode refers specifically to an avalanche photodiode (Avalanche Photo Diode, APD) whose operating voltage is higher than the breakdown voltage, also known as a Geiger mode SPAD. SPAD has become the best device choice for single photon detection due to its advantages of high avalanche gain, fast response spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/02G01S7/4863
CPCG01S17/02G01S7/4863
Inventor 许森向少卿
Owner HESAI TECH CO LTD