• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Modern Optics >Novel methods to improve the measurement accuracy and the dynamic range of Shack-Hartmann wavefront sensor
【24h】

Novel methods to improve the measurement accuracy and the dynamic range of Shack-Hartmann wavefront sensor

机译：提高Shack-Hartmann波前传感器的测量精度和动态范围的新方法

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

As a wavefront sensor, the Shack-Hartmann wavefront sensor plays an important role in the wavefront measurement of human eyes. However, the low measurement accuracy and the small dynamic range of Shack-Hartmann wavefront sensor limit its application. In this paper, we present a matched-filter algorithm to improve the measurement accuracy by more than an order of magnitude. Moreover, we also introduce a new algorithm to extend the dynamic range of Shack-Hartmann wavefront sensor. With this method, the recorded spots of Shack-Hartmann wavefront sensor are not constrained to stay in the corresponding pixel area of the microlens. The result shows that the dynamic range can be extended from 57.1 to 160% for the first 24 items of Zernike wavefronts, respectively. The improvement by our methods makes the Shack-Hartmann more suitable for the measurement of highly aberrated eyes.
机译：作为波前传感器，Shack-Hartmann波前传感器在人眼的波前测量中起着重要作用。但是，Shack-Hartmann波前传感器的测量精度低且动态范围小，限制了其应用。在本文中，我们提出了一种匹配滤波器算法，可将测量精度提高一个数量级以上。此外，我们还引入了一种新算法来扩展Shack-Hartmann波前传感器的动态范围。使用这种方法，Shack-Hartmann波前传感器的记录光斑不被约束在微透镜的相应像素区域中。结果表明，对于Zernike波前的前24个项，动态范围可以分别从57.1扩展到160％。我们方法的改进使Shack-Hartmann更适合于测量高度畸变的眼睛。

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