1 November 2011 Active optical system for any field angle zoom
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Optical Engineering, 50(11), 113001 (2011). doi:10.1117/1.3654181
We have theoretically proposed a new type of active optical zoom system. It can change the magnification of an imaging system at any field angle, namely, it can change the effective focal length at a limited region of interest and simultaneously maintain high resolution. It is comprised of two static aspheric mirrors and two deformable mirrors; furthermore, by changing the curvature of mirrors the focal length can be adjusted from −399 to −558.6 mm. The system reduces the bandwidth of data transmission and may find potential applications in high speed photography.
Shaolei Hu, Xin Zhao, Weihui Dong, Yongjun Xie, "Active optical system for any field angle zoom," Optical Engineering 50(11), 113001 (1 November 2011). https://doi.org/10.1117/1.3654181

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