光学技术, 2019, 45 (5): 531, 网络出版: 2020-01-07   

多通道PCR荧光检测仪的光学系统设计

Optical system design of multichannel PCR fluorescence detector
作者单位
上海理工大学 光电信息与计算机工程学院, 上海 200093
摘要
针对目前实时定量PCR荧光检测仪系统中存在的检测效率低、体积大等问题, 提出了一种基于传统单通道共聚焦型光路改善组件的方法, 使激发光路和荧光收集光路共用一个大孔径透镜, 并在该透镜的下方围绕多个激发光准直光路, 同时在荧光收集光路中添加多个二向色镜, 实现多通道荧光的同时检测。运用Code V软件设计出准直透镜和聚焦镜, 将透镜数据导入到Lighttools软件中进行仿真模拟, 结果表明, 光学系统解决了现有实时定量PCR荧光检测仪中存在的问题, 检测效率是原系统的2倍以上, 体积比传统单通道集成的结构小2倍以上。
Abstract
Aiming at the problems of low detection efficiency and large volume in the current real-time quantitative PCR fluorescence detector system, a method for improving components based on the original single-channel confocal optical path is proposed. The excitation light path and the fluorescence collection light path share a large-diameter lens, and a plurality of excitation light collimation optical paths are arranged under the lens, and a plurality of dichroic mirrors are added to the fluorescence collection optical path to realize simultaneous detection of multi-channel fluorescence. Using the Code V software to design the collimating lens and the focusing lens, the lens data was imported into the Lighttools software for simulation. The results show that the optical system solves the problems existing in the existing real-time quantitative PCR fluorescence detector. The detection efficiency is more than 2 times that of the original system, while effectively reducing the volume of the fluorescence detection device, and improving the cost performance of the instrument.

谢欣茹, 杨波, 潘帅, 云竹溪. 多通道PCR荧光检测仪的光学系统设计[J]. 光学技术, 2019, 45(5): 531. XIE Xinru, YANG Bo, PAN Shuai, YUN Zhuxi. Optical system design of multichannel PCR fluorescence detector[J]. Optical Technique, 2019, 45(5): 531.

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