• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Optical Measurement Systems for Industrial Inspection V pt.1; Proceedings of SPIE-The International Society for Optical Engineering; vol.6616 pt.1 >Special lenslet array with long focal length range for Shack-Hartmann Wavefront Sensor
【24h】

Special lenslet array with long focal length range for Shack-Hartmann Wavefront Sensor

机译：适用于Shack-Hartmann波前传感器的特殊焦距阵列，具有长焦距范围

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Since its emergence in the early 1970s, Shack-Hartmann Wavefront Sensing technology has been investigated and explored world-widely by the researchers and engineers. However, there are few papers or reports to study the system performance and key factors to affect the performance of a Shack-Hartmann Wavefront Sensor (SHWS), in this paper, through experimental study of the system stability of a SHWS, it is found that the image sensor and detector, normally a CCD, should be placed exactly at the focal plane of the lenslet array, otherwise it will bring in significant wavefront measurement error. In order to improve the system performance, a special lenslet array with long focal range is designed, and it is functioned by a spatial light modulator for sampling wavefront in a SHWS. Diffractive lenses with long focal length range can provide pseudo-nondiffracting beams, and a long range of focusing plane. The performances and effects of the modified SHWS with such a special lenslet array generated by a programmable SLM, are investigated, and the experimental results show that the system stability and measurement repeatability are not sensitive to the sensing distance, and can keep at a good level in a long range.
机译：自1970年代初出现以来，Shack-Hartmann Wavefront Sensing技术已在全球范围内受到研究人员和工程师的研究和探索。然而，很少有论文或报告来研究系统性能以及影响Shack-Hartmann波前传感器（SHWS）性能的关键因素，通过对SHWS系统稳定性的实验研究，发现图像传感器和检测器（通常为CCD）应准确放置在小透镜阵列的焦平面上，否则会带来明显的波前测量误差。为了改善系统性能，设计了一种特殊的长焦距小透镜阵列，该透镜阵列由空间光调制器发挥作用，用于对SHWS中的波前进行采样。焦距范围长的衍射透镜可以提供伪非衍射光束，并且焦平面范围长。研究了由可编程SLM生成的具有特殊小透镜阵列的改进型SHWS的性能和效果，实验结果表明，系统稳定性和测量重复性对传感距离不敏感，可以保持良好的水平在远距离。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号