本文選題：視力篩查 + 屈光　； 參考：《北京交通大學(xué)》2012年碩士論文

【摘要】：本文主要研究嬰幼兒視力篩查的屈光信息探測(cè)裝置,用于在友好的探測(cè)距離下探測(cè)眼睛的原始屈光狀態(tài)信息,并將其轉(zhuǎn)換為可用于計(jì)算的數(shù)字信號(hào)。同時(shí)在檢測(cè)時(shí)不需要被檢者很高的配合性,是嬰幼兒視力篩查系統(tǒng)的主要組成部分之 在以往屈光信息探測(cè)所用Hartmann-Shack波前傳感器原理的啟發(fā)下,本文設(shè)計(jì)了與以往不同的結(jié)構(gòu)簡(jiǎn)單、小體積、低成本的屈光信息探測(cè)裝置。以安全功率范圍內(nèi)的紅外激光做光源,耦合進(jìn)數(shù)根塑料光纖中,形成數(shù)個(gè)點(diǎn)光源。將這些點(diǎn)光源排列成規(guī)則正方形點(diǎn)陣,并用此紅外光點(diǎn)陣在嬰幼兒眼中成像,就把眼睛的屈光信息轉(zhuǎn)換為光學(xué)圖像信息。設(shè)計(jì)特定的透鏡系統(tǒng),用CMOS圖像傳感器將此光學(xué)圖像采集,就得到了可用于計(jì)算屈光度的數(shù)字圖像信號(hào)。最后,用USB通訊接口將數(shù)字圖像信號(hào)上傳至PC機(jī),用PC機(jī)開(kāi)發(fā)便捷的人機(jī)交互軟件,實(shí)現(xiàn)對(duì)屈光信息探測(cè)裝置的控制以及數(shù)字圖像信號(hào)的顯示和存儲(chǔ)。 本文對(duì)本屈光信息探測(cè)裝置中各模塊相應(yīng)的選用和設(shè)計(jì)依據(jù)作了分析,并通過(guò)實(shí)驗(yàn)驗(yàn)證了本設(shè)計(jì)的可行性,符合嬰幼兒屈光信息探測(cè)裝置的設(shè)計(jì)要求。
[Abstract]:This paper mainly studies the refractive information detection device for infant visual screening, which is used to detect the original refractive state information of eyes at friendly detection distance and convert it into digital signals that can be used for calculation. At the same time, there is no need for the testees to cooperate with each other. It is one of the main components of the infant visual screening system inspired by the principle of Hartmann-Shack wavefront sensor used in the previous refractive information detection. In this paper, a simple, small volume and low cost refractive information detector is designed. The infrared laser in the safe power range is used as the light source and coupled into several plastic optical fibers to form several point light sources. These point light sources are arranged into regular square lattice, and the infrared light lattice is used to image the infantile eyes, then the refractive information of the eyes is converted into the optical image information. A special lens system is designed and the optical image is collected by CMOS image sensor. The digital image signal which can be used to calculate the diopter is obtained. Finally, the digital image signal is uploaded to PC by USB communication interface, and a convenient human-computer interactive software is developed by PC to realize the control of refractive information detection device and the display and storage of digital image signal. In this paper, the corresponding selection and design basis of each module in the refractive information detection device are analyzed, and the feasibility of the design is verified by experiments, which meets the design requirements of the infantile refractive information detection device.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH786

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本文編號(hào)：2011970