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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 22 — Nov. 4, 2013
  • pp: 26080–26092

Design method of surface contour for a freeform lens with wide linear field-of-view

Jun Zhu, Tong Yang, and Guofan Jin  »View Author Affiliations

Optics Express, Vol. 21, Issue 22, pp. 26080-26092 (2013)

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In this paper, a design method of surface contour for a freeform imaging lens with a wide linear field-of-view (FOV) is developed. During the calculation of the data points on the unknown freeform surfaces, the aperture size and different field angles of the system are both considered. Meanwhile, two special constraints are employed to find the appropriate points that can generate a smooth and accurate surface contour. The surfaces obtained can be taken as the starting point for further optimization. An f-θ single lens with a ± 60° linear FOV has been designed as an example of the proposed method. After optimization with optical design software, the MTF of the lens is close to the diffraction limit and the scanning error is less than 1μm. This result proves that good image quality and scanning linearity were achieved.

© 2013 Optical Society of America

OCIS Codes
(220.2740) Optical design and fabrication : Geometric optical design
(080.4225) Geometric optics : Nonspherical lens design

ToC Category:
Optical Design and Fabrication

Original Manuscript: July 29, 2013
Revised Manuscript: October 16, 2013
Manuscript Accepted: October 16, 2013
Published: October 24, 2013

Jun Zhu, Tong Yang, and Guofan Jin, "Design method of surface contour for a freeform lens with wide linear field-of-view," Opt. Express 21, 26080-26092 (2013)

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