光学仪器, 2019, 41 (3): 75, 网络出版: 2019-09-02
HPV基因芯片检测装置的匀光照明设计
Uniform illumination design of HPV gene chip detection device
HPV基因芯片 矩形 LED阵列 匀光照明 灰度均匀度 HPV gene chip rectangular LED array uniform illumination gray level uniformity
摘要
人乳头瘤病毒 (HPV)基因芯片检测装置可读取与分析 HPV芯片的杂交点信号值, 进而区分不同的 HPV病毒类型, 而检测装置照明的均匀性关系到 HPV芯片图像处理算法的可靠性与难度。为实现均匀照明, 优化了矩形 LED阵列排布并配置匀光扩散板。首先, 分析单个 LED灯珠的辐射强度分布, 建立矩形 LED阵列的理论模型; 然后, 在仿真软件中建立 4行 8列的矩形 LED阵列模型; 最后, 搭建 HPV基因芯片检测装置进行实验测试。实验结果表明, 该照明系统能使 70 mm×20 mm的目标被照面的灰度均匀度达到 95.6%, 满足了 HPV基因芯片检测装置均匀照明的要求。
Abstract
The human papilloma virus (HPV) gene chip detection device can read and analyze the hybrid point signal values of the HPV chip to distinguish different HPV virus types. The uniform illumination of the device is related to the difficulty and reliability of the HPV chip image processing algorithm. To achieve uniform illumination, the rectangular LED array is arranged and the uniform light diffusing plate is arranged. Firstly, the radiation intensity distribution of a single LED lamp bead is analyzed to establish a theoretical model of the rectangular LED array. Then, a rectangular LED array model of 4 rows and 8 columns is established in the simulation software. Finally, the HPV gene chip detection device is set up for experimental testing. The experimental results show that the illumination system has a gray level uniformity of 95.6% in the target surface of 70 mm×20 mm, which meets the uniform illumination requirements of the HPV gene chip detection device.
刘忆惠, 陈建国, 甘振华, 杜民, 高跃明. HPV基因芯片检测装置的匀光照明设计[J]. 光学仪器, 2019, 41(3): 75. LIU Yihui, CHEN Jianguo, GAN Zhenhua, DU Min, GAO Yueming. Uniform illumination design of HPV gene chip detection device[J]. Optical Instruments, 2019, 41(3): 75.