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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 14 — May. 10, 2014
  • pp: 3028–3034

Easy-aligned off-axis three-mirror system with wide field of view using freeform surface based on integration of primary and tertiary mirror

Qingyu Meng, Wei Wang, Hongcai Ma, and Jihong Dong  »View Author Affiliations


Applied Optics, Vol. 53, Issue 14, pp. 3028-3034 (2014)
http://dx.doi.org/10.1364/AO.53.003028


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Abstract

An off-axis three-mirror system (OTS) was designed based on the primary mirror and tertiary mirror (TM) integrated on a single substrate in order to solve the OTS drawbacks, such as the alignment difficulty and the large opto-mechanical weight. Furthermore, an optical freeform surface that can increase the optimizing degrees of freedom (DOF) was applied on the TM in order to achieve a wide field of view (FOV). An example with a focal length of 1200 mm, F-number of 12, and FOV of 10 ° × 4 ° was given, and the maximum wave front error (WFE) RMS was 0.0126 λ , indicating a good imaging quality. The design result shows that the number of alignment DOF was reduced from 12 to 6, and the weight of the mirror support assembly can also be lighter. An XY polynomial, established as an even function of x, was employed as the TM surface, so we obtained an axial symmetrical imaging quality about the x axis, and the axial symmetry aberration performance also brings considerable convenience to alignment and testing for the OTS.

© 2014 Optical Society of America

OCIS Codes
(080.1010) Geometric optics : Aberrations (global)
(080.3620) Geometric optics : Lens system design
(120.3620) Instrumentation, measurement, and metrology : Lens system design
(220.3620) Optical design and fabrication : Lens system design

ToC Category:
Geometric Optics

History
Original Manuscript: January 14, 2014
Revised Manuscript: April 1, 2014
Manuscript Accepted: April 1, 2014
Published: May 7, 2014

Citation
Qingyu Meng, Wei Wang, Hongcai Ma, and Jihong Dong, "Easy-aligned off-axis three-mirror system with wide field of view using freeform surface based on integration of primary and tertiary mirror," Appl. Opt. 53, 3028-3034 (2014)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-53-14-3028

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