A Coaxial and Off-axial Integrated Three-mirror Optical System with High Resolution and Large Field of View Chen, Zhe; Zhu, Junqing; Peng, Jiantao; Zhang, Xingxiang; Ren, Jianyue;
A novel optical design for high resolution, large field of view (FOV) and multispectral remote sensing is presented. An f/7.3 Korsch and two f/17.9 Cook three-mirror optical systems are integrated by sharing the primary and secondary mirrors, bias of the FOV, decentering of the apertures and reasonable structure arrangement. The aperture stop of the Korsch system is located on the primary mirror, while those of the Cook systems are on the exit pupils. High resolution image with spectral coverage from visible to near-infrared (NIR) can be acquired through the Korsch system with a focal length of 14 m, while wide-field imaging is accomplished by the two Cook systems whose focal lengths are both 13.24 m. The full FOV is 4°×0.13°, a coverage width of 34.9 km at the altitude of 500 km can then be acquired by push-broom imaging. To facilitate controlling the stray light, the intermediate images and the real exit pupils are spatially available. After optimization, a near diffraction-limited performance and a compact optical package are achieved. The sharing of the on-axis primary and secondary mirrors reduces the cost of fabrication, test, and manufacture effectively. Besides, the two tertiary mirrors of the Cook systems possess the same parameters, further cutting down the cost.
Three-mirror system;Telescopes;Optical system design;On-axis;Off-axis;
Design and Characteristic Measurement of 8000 mm Large Aperture Integrating Sphere, Journal of the Optical Society of Korea, 2016, 20, 4, 500
H. Xu and Y. Guan, “Structural design of 1m diameter space mirror component of space camera,” Optics and Precision Engineering 21, 1488-1495 (2013).
W. Wetherell and D. Womble, "All-reflective three element objective," U.S. Patent 4240707 (1980).
D. Xue, "Integrated manufacturing technology of off-axis three-mirror anastigmatic system," Chin. Opt. Lett. 12(s2), S21202 (2014).
D. Korsch, “Astigmatic three-mirror telescope,” Appl. Opt. 16, 2074-2077 (1977).
D. Korsch, “Closed form solution for three-mirror telescopes, corrected for spherical aberration, coma, astigmatism, and field curvature,” Appl. Opt. 11, 2986-2987 (1972).
L. G. Cook, "Three-mirror anastigmat used off-axis in aperture and field," in Proc. Huntsville Technical Symposium (International Society for Optics and Photonics, USA, 1979), pp. 207-211.
M. L. Lampton, M. J. Sholl, and M. E. Levi, "Off-axis telescopes for dark energy investigations," Proc. SPIE 7731, 77311G (2010).
X. L. Li, M. Xu, and Y. T. Pei, “Optical design of an off-axis five-mirror-anastigmatic telescope for near infrared remote sensing,” J. Opt. Soc. Korea 16, 343-348 (2012).
X. L. Li, M. Xu, X. D. Ren, and Y. T. Pei, “An optical design of off-axis four-mirror-anastigmatic telescope for remote sensing,” J. Opt. Soc. Korea 16, 243-246 (2012).
D. Korsch, “Design and optimization technique for three-mirror telescopes,” Appl. Opt. 19, 3640-3645 (1980).
J. H. Pan, The Design, Manufacture and Test of the Aspheric Optical Surfaces (Science Press, Beijing, China, 2004), Chapter 5.
J. U. Lee and S. M. Yu, “Analytic design procedure of three-mirror telescope corrected for spherical aberration, coma, astigmatism, and Petzval field curvature,” J. Opt. Soc. Korea 13, 184-192 (2009).
M. Laslandes, S. Pellegrino, J. Steeves, and K. Patterson, "Optimization of electrode configuration in surface-parallel actuated deformable mirrors," Proc. SPIE 9148, 914843 (2014).
M. Laslandes, E. Hugot, M. Ferrari, C. Hourtoule, C. Singer, C. Devilliers, C. Lopez, and F. Chazallet, “Mirror actively deformed and regulated for applications in space: design and performance,” Opt. Eng. 52, 091803 (2013).
R. N. Wilson, Reflecting Telescope Optics (Springer, Berlin, German, 2004), Chapter 3.