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An optical machine structure design of a kind of gene biochip imaging system
Author(s): Zhe Wang; Yuanhua Yu; Qimeng Chen; Xiangkai Meng; Ziqi Liu
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Paper Abstract

Gene biochip imaging and scanning technology is a more advanced gene diagnosis technology after fluorescence quantitative PCR technology, second-generation sequencing technology and digital PCR technology. Due to the great influence of fluorescence microscopy system, the imaging and scanning technology of gene biochip with high imaging efficiency and accuracy has become a hot topic widely concerned by scholars. In this paper, two-channel laser was used as the excitation light source of the biochip, and the fluorescence imaging system of the switchable fluorescence filter was designed to realize the detection of FAM and HEX biological fluorescence signals; According to the working principle of the gene biochip imager, the finite element analysis method is used to analyze the thermal structure of the optical system, and the internal structural parameters of the optical system are optimized according to the simulation results. According to the optimization result, the illumination time of each object pixel is controlled to utilize the fluorescence information more efficiently, and the fluorescent bleaching effect is reduced without sacrificing the image quality, and the PCR amplification oil droplet quantitative reading and display is performed in real time. The gene biochip imaging system proposed in this paper can be used to image, obtain, read, process and display the detected chip with a resolution of 10 m/ pixel, a minimum detection limit of < 10 fluorescent molecules/square micron, and a sample detection repeatability of < 10%.The results show that the gene biological chip imaging system designed by this research has the advantages of low noise, low cost and fast scanning speed, and provides a theoretical basis for precision medical fields such as early diagnosis and cure evaluation of clinical tumors. The results show that the gene biochip imaging system designed by this research has the advantages of low noise, low cost and fast scanning speed, and provides a theoretical basis for precision medical fields such as early diagnosis and cure evaluation of clinical tumors.

Paper Details

Date Published: 18 December 2019
PDF: 8 pages
Proc. SPIE 11338, AOPC 2019: Optical Sensing and Imaging Technology, 1133808 (18 December 2019); doi: 10.1117/12.2540472
Show Author Affiliations
Zhe Wang, Changchun Univ. of Science and Technology (China)
Yuanhua Yu, Changchun Univ. of Science and Technology (China)
Qimeng Chen, Changchun Univ. of Science and Technology (China)
Xiangkai Meng, Changchun Univ. of Science and Technology (China)
Ziqi Liu, Changchun Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 11338:
AOPC 2019: Optical Sensing and Imaging Technology
John E. Greivenkamp; Jun Tanida; Yadong Jiang; HaiMei Gong; Jin Lu; Dong Liu, Editor(s)

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