OCT系统眼轴长测量光学设计

摘要：光学相干断层扫描（OCT）作为一种新的眼科诊断技术以其超高的分辨率从20世纪90年代中期开始逐渐发展起来，OCT的使用特别是对黄斑部疾病、青光眼、白内障、近视眼的诊断和评估有着极其重要的意义。但是，一个有效的病理评估是建立在对整个眼球的全眼域的快速成像分析上，由于时域OCT(TD-OCT)技术的成像速度和傅里叶域OCT(FD-OCT)技术的成像深度有限，目前的OCT系统并不能达到理想的诊断效果，临床上仍然需要一个有效的全眼域成像OCT系统。76306

基于这种情况，本课题提出的具有双光路探测镜头的OCT系统能够完美的解决现阶段仪器的缺陷，该系统在普通傅里叶光谱域OCT的测量臂上添加了另一路具有不同中心波长宽带光的探测光路，通过光学设计使两个探测光路能够分别到达眼前节和视网膜底，从而达到全眼域成像的目的。

文章将对该系统的原理进行详述，ZEMAX模拟和搭建光路，并给出实际测量结果。毕业论文关键词：光学相干断层扫描；眼科；全眼域；ZEMAX；双光路成像

OCT system eye shaft long measurement optical design

Abstract:the optical coherence tomography (OCT) as a new ophthalmic diagnosis technology with its ultra high resolution developed gradually from the mid - 1990 - s, the use of OCT especially for macular disease, glaucoma, cataract, diagnosis and assessment of the myopia has very important significance。 However, a valid pathological assessment is based on the eyeball full eye domain fast imaging analysis, due to the time domain OCT imaging speed (TD - OCT) technology and Fourier Ye Yu OCT imaging depth (FD - OCT) technology co。, LTD。, the diagnosis of the OCT system cannot achieve the ideal effect, still need a clinically effective full eye domain OCT imaging system。

Based on this kind of situation, this topic proposed lens with double optical path detection of OCT system can perfectly solve the defects of present instruments, the system in ordinary Fourier spectral domain OCT measuring arm with the other all the way with different center wavelength broadband optical detection optical path, through the optical design to make two detection optical path to reach the front section and retina, thus achieve the goal of full eye domain imaging。

The article will elaborate on the principle of the system, and ZEMAX simulates and builds the optical path, and gives the actual measurements。

Keywords: Optical coherence tomography An eye; All eyes domain; ZEMAX。 Double light path imaging

摘要 i

Abstract i

1 绪论 1

1。1 眼科诊断技术的运用现状 1

1。1。1 超声成像 1

1。1。2 MRI成像 1

1。2 眼科领域OCT技术研究现状及发展趋势 2

1。3 OCT全眼域成像的研究目的及意义 4

2 双通道SD-OCT系统概述 5

2。1 普通单测量光路OCT系统的工作原理 5

2。1。1 OCT系统的成像深度 7

2。1。2 OCT系统的横向分辨率 OCT系统眼轴长测量光学设计:http://www.youerw.com/wuli/lunwen_87546.html