Aspherical high-speed varifocal mirror for miniature catadioptric objectives

被引：11
作者：
Wapler, Matthias C. [1 ]
Lemke, Florian [1 ]
Alia, Gazmed [1 ]
Wallrabe, Ulrike [1 ]
机构：
[1] Univ Freiburg, Dept Microsyst Engn IMTEK, Lab Microactuators, Georges Kohler Allee 102, D-79110 Freiburg, Germany
来源：
OPTICS EXPRESS | 2018年 / 26卷 / 05期
关键词：
ADAPTIVE OPTICS; CAMERA APPLICATIONS; DEFORMABLE MIRROR; ACTUATOR; DESIGN;
D O I：
10.1364/OE.26.006090
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a varifocal mirror based on a piezo-actuated glass membrane that can be used as a secondary mirror in miniature Cassegrain-type mirror-or catadioptric objectives. The mirror section has a diameter of 10 mm on a clear membrane diameter of 23 mm, with a focal range of +/- 8 m(-1) and a response time on the millisecond-scale. The two piezo layers enable an aspherical tuning range that covers the elliptic, parabolic and hyperbolic regime over most of the focal range. We demonstrate the application of the mirror in a simple catadioptric telefocus objective with a focal length of 68 mm at an aperture of 22 mm and a thickness of 16.6 mm. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：6090 / 6102
页数：13
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