首页> 外文会议>Conference on Optical Design and Engineering; Sep 30-Oct 3, 2003; St.Etienne, France >Tolerancing surface accuracy of aspheric lenses used for imaging purposes
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Tolerancing surface accuracy of aspheric lenses used for imaging purposes

机译:用于成像目的的非球面镜片的表面精度公差

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Tolerancing aspheres and preparing the corresponding drawing indications significantly differ from techniques used at spherical lenses due mainly to surface waviness, an error caused by most asphere fabrication technologies. Standard (ISO) regulations proved to be adequate for several kinds of aspheric lenses (e.g. laser focusing/collimation) made by the traditional diamond turning method, but sometimes are not general enough for recent fabrication techniques (such as CNC polishing of glass aspheres), and today's more demanding lenses (eyepieces, Fourier objectives, relays etc.). A new, generalized tolerancing technique has been developed to accurately constrain surface waviness, quite independently of fabrication technology, and to provide easy verification of the results. Operation of the method is demonstrated on a Fourier-type objective comprising a glass aspheric lens, by computer simulation and testing of the fabricated prototypes.
机译:公差非球面镜和准备相应的附图标记与球形透镜所使用的技术有很大不同,主要是由于表面起伏,这是大多数非球面镜制造技术造成的误差。事实证明,标准(ISO)法规适用于通过传统金刚石车削方法制成的多种非球面镜片(例如,激光聚焦/准直),但有时对于最近的制造技术(例如对玻璃非球面镜片进行CNC抛光)还不够通用,以及当今要求更高的镜头(目镜,傅立叶物镜,中继器等)。已经开发出一种新的,通用的公差技术,以完全独立于制造技术来精确地限制表面起伏,并提供对结果的轻松验证。通过计算机模拟和对所制造原型的测试,在包括玻璃非球面透镜的傅立叶型物镜上演示了该方法的操作。

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