Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Wavefront Sensitivity Analysis Using Global Wavefront Aberration in an Unobscured Optical System

  • Received : 2012.07.23
  • Accepted : 2012.08.02
  • Published : 2012.09.25
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Abstract

It is very important to analyze effectively the tolerance of an optical system with high resolution as the projection lens of photolithography or as the objective lens of a microscope. We would like to find an effective assembly structure and compensators to correct aberrations through global wavefront sensitivity analysis using Zernike polynomial expansion from the field and pupil coordinates rather than from only pupil coordinates. In this paper, we introduce global wavefront coefficients by small perturbations of the optical system, and analyze the optical performance with these coefficients. From this analysis, it is possible to see how we can enlarge the tolerance through the proper assembly structure and compensators.

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