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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 6 — Feb. 20, 2013
  • pp: 1192–1210

All-reflective optical bifocal zooming system without moving elements based on deformable mirror for space camera application

Hui Zhao, Xuewu Fan, Gangyi Zou, Zhihai Pang, Wei Wang, Guorui Ren, Yunfei Du, and Yu Su  »View Author Affiliations


Applied Optics, Vol. 52, Issue 6, pp. 1192-1210 (2013)
http://dx.doi.org/10.1364/AO.52.001192


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Abstract

The space camera with variable focal length is capable of capturing images with variable resolution and variable field of view. This is useful for space-borne reconnaissance because the camera can switch between coarse and fine reconnaissance flexibly. However, the traditional optical zooming relies on moving elements which might influence the momentum balance of the satellite platform. Therefore, we present a prototype design using the piezo deformable mirror (PDM) to realize an all-reflective optical bifocal zooming system. By changing the curvature radius of the PDM, the focal length can be switched between 48 and 192 mm without moving elements involved. With the focal length experiencing 4 × magnification, the system performance is still approaching diffraction-limited performance, and the maximum stroke of the PDM is also within its physical limits. Experiments demonstrate that the principle is correct and the design is successful.

© 2013 Optical Society of America

OCIS Codes
(110.0110) Imaging systems : Imaging systems
(110.1080) Imaging systems : Active or adaptive optics

ToC Category:
Imaging Systems

History
Original Manuscript: November 14, 2012
Revised Manuscript: January 8, 2013
Manuscript Accepted: January 9, 2013
Published: February 13, 2013

Citation
Hui Zhao, Xuewu Fan, Gangyi Zou, Zhihai Pang, Wei Wang, Guorui Ren, Yunfei Du, and Yu Su, "All-reflective optical bifocal zooming system without moving elements based on deformable mirror for space camera application," Appl. Opt. 52, 1192-1210 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-6-1192

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