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Method to design two aspheric surfaces for imaging system.

Jia Hou1, Haifeng Li, Rengmao Wu

  • 1State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hang Zhou 310027, China.

Applied Optics
|May 15, 2013
PubMed
Summary

This study introduces a novel method for designing dual aspheric lens surfaces. The technique enables precise control over image mapping for high-quality projection systems.

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Area of Science:

  • Optics and Photonics
  • Optical Engineering
  • Surface Metrology

Background:

  • Designing aspheric lenses is crucial for advanced optical systems.
  • Simultaneous design of multiple aspheric surfaces presents significant challenges.
  • Existing methods may struggle with complex projection requirements like non-planar surfaces.

Purpose of the Study:

  • To propose a new method for simultaneously designing two aspheric surfaces.
  • To achieve precise control over the mapping relationship between object and image points.
  • To demonstrate the method's effectiveness in a projection system with high image quality and low distortion.

Main Methods:

  • Coupling three rays (two marginal, one chief) from each field of view to their corresponding image points.
  • Utilizing the law of refraction to derive microspherical lenses for each field of view.
  • Determining aspheric surface profiles from the position and normal vector of microsphere midpoints.

Main Results:

  • A theoretical framework for realizing arbitrary 2D object-to-image point mapping is established.
  • Successful design of aspheric lenses enabling projection onto a spherical surface.
  • Demonstrated low distortion and high image quality in the projection example.

Conclusions:

  • The proposed method offers a robust approach for designing dual aspheric surfaces.
  • This technique facilitates the creation of optical systems for complex projection tasks.
  • The findings contribute to advancements in optical design for imaging and projection applications.