Carbon-fiber-reinforced polymer variable-curvature mirror used for optical zoom imaging: prototype design and experimental demonstration

Hui Zhao; Xuewu Fan; Zhihai Pang; Guorui Ren; Wei Wang; Yongjie Xie; Zhen Ma; Yunfei Du; Yu Su; Jingxuan Wei

doi:10.1117/1.OE.54.2.025103

3 February 2015 Carbon-fiber-reinforced polymer variable-curvature mirror used for optical zoom imaging: prototype design and experimental demonstration

Hui Zhao, Xuewu Fan, Zhihai Pang, Guorui Ren, Wei Wang, Yongjie Xie, Zhen Ma, Yunfei Du, Yu Su, Jingxuan Wei

Author Affiliations +

Funded by: National Science Foundation of China

Optical Engineering, Vol. 54, Issue 2, 025103 (February 2015). https://doi.org/10.1117/1.OE.54.2.025103

Abstract

In recent years, optical zoom imaging without moving elements has received much attention. The key to realizing this technique lies in the design of the variable-curvature mirror (VCM). To obtain enough optical magnification, the VCM should be able to change its radius of curvature over a wide range. In other words, the VCM must be able to provide a large sagittal variation, which requires the mirror material to be robust during curvature variation, require little force to deform, and have high ultimate strength. Carbon-fiber-reinforced polymer (CFRP) satisfies all these requirements and is suitable for fabricating such a VCM. Therefore, in this research, a CFRP prototype VCM has been designed, fabricated, and tested. With a diameter of 100 mm, a thickness of 2 mm, and an initial radius of curvature of 1740 mm, this VCM can provide a maximum 23-μm sagittal variation and a minimum and maximum radius of curvature of 1705 and 1760 mm.

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Hui Zhao, Xuewu Fan, Zhihai Pang, Guorui Ren, Wei Wang, Yongjie Xie, Zhen Ma, Yunfei Du, Yu Su, and Jingxuan Wei "Carbon-fiber-reinforced polymer variable-curvature mirror used for optical zoom imaging: prototype design and experimental demonstration," Optical Engineering 54(2), 025103 (3 February 2015). https://doi.org/10.1117/1.OE.54.2.025103

Published: 3 February 2015

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