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Dual linkage human eye-like laser scanning imaging system based on moems devices

A laser scanning imaging, double linkage technology, applied in radio wave measurement systems, instruments, electromagnetic wave re-radiation and other directions, can solve the problem of not taking into account the high resolution and imaging rate, and achieve the effect of reducing the amount of data processing

Active Publication Date: 2017-10-31
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the traditional laser three-dimensional imaging cannot take into account the high resolution and imaging speed, and provides a dual-linkage human-like laser scanning imaging system based on MOEMS devices

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  • Dual linkage human eye-like laser scanning imaging system based on moems devices
  • Dual linkage human eye-like laser scanning imaging system based on moems devices
  • Dual linkage human eye-like laser scanning imaging system based on moems devices

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Embodiment Construction

[0026] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0027] Dual-linkage human-eye-imitating laser scanning imaging system based on MOEMS devices, including FPGA1, pulse laser 3, first lens 4, beam splitter 5, photodiode 7, transmitting module 10, receiving module 16, APD detector 19, signal processing Circuit 20.

[0028] System principle: such as figure 1 As shown, the solid line in the figure represents the electrical signal, and the dotted line represents the light wave signal. FPGA1 sends a trigger signal to the pulse laser 3, so that the pulse laser emits a bunch of narrow laser pulses. After the laser pulse passes through the first lens 4, it enters the beam splitter 5. A part is converged on the photodiode 7 through the second lens 6, and is input to the FPGA1 as a timing start signal; the other part is irradiated on the target 15 after passing through the transmitting module 10. The transmittin...

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Abstract

The invention belongs to the field of laser three-dimensional imaging, and especially relates to a double-linkage bionic eye laser scanning imaging system based on an MOEMS device. The system comprises a field programmable gate array, a pulse laser, a first lens, a second lens, a beam splitter, a photodiode, an emission module, a receiving module, an APD detector and a signal processing circuit. The system provided by the invention employs the double-linkage MOEMS for realizing a scanning mode of a bionic eye retina structure, at the same time, according to the feature of the MOEMS device, driving voltages of the MOEMS device are controlled through an algorithm, a bionic eye variable-resolution scanning locus is formed, and variable-resolution imaging of an object is realized. Since the scanning mode involves scanning according to a mode of shape selection from the inside to an outside ring, obtained image information of a whole view field is just a logarithm polar coordinate conversion form of the object. According to the invention, large-view-field imaging can be realized, at the same time, redundant data can be compressed, and the system has the advantages of high resolution, fast imaging speed, large data compression ratio, wide applicability and the like.

Description

technical field [0001] The invention belongs to the field of laser three-dimensional imaging, in particular to a dual-linkage human-eye-imitating laser scanning imaging system based on MOEMS devices. Background technique [0002] With the development of computer technology and digital information technology, as well as the demand for three-dimensional information of detection targets, laser three-dimensional imaging has been developed on the basis of ranging principles. At present, laser 3D imaging can be divided into scanning and non-scanning (array) methods according to the imaging method. The scanning method can achieve higher resolution imaging, but the traditional mechanical scanning method has a low imaging rate, so it cannot take into account both high resolution and high imaging. Compared with the scanning imaging method, the non-scanning method mainly relies on the area array detector to image the target within a certain field of view, which can directly image the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/89G01S7/481
CPCG01S7/481G01S17/89
Inventor 曹杰郝群程阳穆嘉星王鹏程杭林
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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