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首页> 外文会议>Novel Optical Systems Design and Optimization X; Proceedings of SPIE-The International Society for Optical Engineering; vol.6668 >High Numerical Aperture Line Scanning System
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High Numerical Aperture Line Scanning System

机译：高数值孔径线扫描系统

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摘要

In order to scan a line, the scanning optics usually employs either NSG's SELFOC lens or a 1:1 lenslet array. Each of these two methods has its limitation. The SELFOC lens' numerical aperture (NA) is low, which limits its light-collection efficiency. A 1:1 lenslet array can have a high NA, but its resolution along the scanning direction is low, which means it is not suitable for 2-D scanning. In this paper, line scan optics with a high NA will be discussed. Unlike the above-mentioned methods, this method has the same high resolution in both line and scan directions. It has a 1:-1 (preferred 1: < -1) relationship between the object and the image. A number of groups of lenses, based on the length of the object, is required and are arranged along a single plane. The field of each group is equal to or slightly larger than the diameter of the lens. Each group of lenses images a segment of the object onto the image plane. The magnification of each group should be less than 1:-1, for example, 1:-0.95, so that the image of each segment will not overlap in the sensor when one long sensor is used, or it will not be larger than the sensor when each group has its own sensor. After the image of each segment is read from the sensor, it is reverted and, with the help of image processing, all of the images are connected together to form an image of the whole line.
机译：为了扫描线，扫描光学器件通常采用NSG的SELFOC透镜或1：1小透镜阵列。这两种方法都有其局限性。 SELFOC镜头的数值孔径（NA）低，这限制了其聚光效率。 1：1小透镜阵列可以具有较高的NA，但其沿扫描方向的分辨率较低，这意味着它不适用于2D扫描。在本文中，将讨论具有高NA的线扫描光学器件。与上述方法不同，此方法在行和扫描方向上都具有相同的高分辨率。它在对象和图像之间具有1：-1（最好是1：<-1）关系。基于物体的长度，需要多个透镜组，并且这些透镜组沿着单个平面排列。每组的视场等于或略大于透镜的直径。每组透镜将物体的一部分成像到像平面上。每组的放大倍率应小于1：-1，例如1：-0.95，这样，当使用一个长传感器时，每个段的图像在传感器中将不会重叠，或者不会大于传感器的倍率。每个组都有自己的传感器时的传感器。从传感器读取每个片段的图像后，将其还原，并借助图像处理将所有图像连接在一起以形成整条线的图像。

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