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建立医用硬性内窥镜畸变的评定基础和方法,用视轴对称的球面Z视场为模型来模拟体腔凹面特征,以建立内窥镜物像共轭的分析基础;运用光学原理并结合ISO9039:1994“光学和光学仪器光学系统质量评价———畸变的测定”的定义原则,并根据理论畸变的临床要求确定畸变定义;采用主光线追迹原理推导不同球面Z形状的畸变换算通式。创立了医用硬性内窥镜以单位相对畸变表述的定义和表达式,并导出变换视场面的畸变换算通用公式和测试方法。本文建立的畸变评定基础和方法适用于医用硬性内窥镜的标准应用。
To establish the foundation and method for the assessment of medical rigid endoscopic distortions and to simulate the concavity characteristics of the body cavity with the biaxial Z-field of view which is axisymmetric to establish the basis of the analysis of conjugation of the endoscopic object images. The optical principle and the combination of ISO9039: 1994 “optical and optical instruments optical system quality evaluation --- Determination of distortion” principle of the definition and distortion according to the clinical requirements of the theory to determine the definition of distortion; using the principle of principal ray tracing Derived Z-shape of different spherical aberration conversion formula. The definition and expression of medical rigid endoscope in terms of unit relative distortion were established, and the general formulas and test methods for transformation distortion conversion were derived. The foundation and method of distortion assessment established in this paper is suitable for the standard application of medical rigid endoscope.