Title:
MULTI-LASER BEAM SHAPING SYSTEM AND METHOD FOR FLOW DETECTION
Document Type and Number:
WIPO Patent Application WO/2019/200518
Kind Code:
A1
Abstract:
A multi-laser beam shaping system and method for flow detection. The system comprises: a beam combining apparatus (100) for carrying out beam combination on multiple paths of laser; and a binary optical device (200), wherein the binary optical device (200) has a surface relief structure for shaping multi-color laser or monocolor laser subjected to beam combination and homogenizing same to form a rectangular flat-topped spot, and controlling the size and spatial position of the rectangular flat-topped spot so as to detect a single-cell flow along the center line of a flow channel. A rectangular spot generated by the system has an accurate size, a determined relative position, a clear boundary and a uniform top, thus facilitating improving the stability, resolution, signal-to-noise ratio and detection throughput of flow detection. The binary optical device (200) also can achieve the effect of adding in a focusing lens and simultaneously completes the functions of shaping, homogenizing, positioning and focusing multi-color laser or monocolor laser. In addition, an optical system is greatly simplified and the volume of the system is reduced.
Inventors:
YOU ZHENG (CN)
ZHAO JINGJING (CN)
ZHAO JINGJING (CN)
Application Number:
PCT/CN2018/083232
Publication Date:
October 24, 2019
Filing Date:
April 16, 2018
Export Citation:
Assignee:
UNIV TSINGHUA (CN)
International Classes:
G01N15/14; G02B27/09
Foreign References:
| CN108646422A | 2018-10-12 | |||
| CN104503101A | 2015-04-08 | |||
| US20150077869A1 | 2015-03-19 | |||
| CN106383081A | 2017-02-08 | |||
| CN105987870A | 2016-10-05 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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