Tunable compound eye cameras
Tunable compound eye cameras
复制标题
可调谐复眼相机
DOI：
10.1117/12.854532
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
O. Ambacher
中科院分区：
文献类型：
--
作者：
D. Paetz;S. Leopold;F. Knoebber;S. Sinzinger;M. Hoffmann;O. Ambacher
我们提出了具有增强光学功能的薄复眼相机的设计和实现概念。该系统基于具有单独可调焦距和视角的面，用于扫描物体空间。有源透镜元件由氮化铝(AlN)/纳米晶金刚石（NCD）膜制成。这种材料系统允许具有大变形范围的慢热驱动元件以及具有较小变形范围的快速压电元件。由于这些材料具有极高的机械稳定性，我们能够实现具有最佳表面质量和优异长期稳定性的微光元件。我们使用直径为1毫米的微透镜面和可调聚焦功率来补偿扫描过程中不同视角的焦点偏移。光束的扫描偏转是通过横向移动球面元件或可调微棱镜与减少像差实现的。对于这两种驱动器，我们提出了设计、制造概念和初步实验结果。
We present design and realization concepts for thin compound eye cameras with enhanced optical functionality. The systems are based on facets with individually tunable focus lengths and viewing angles for scanning of the object space. The active lens elements are made of aluminum nitride (AlN)/nanocrystalline diamond (NCD) membranes. This material system allows slow thermally actuated elements with a large deformation range as well as fast piezoelectric elements with a smaller deformation range. Due to the extreme mechanical stability of these materials, we are able to realize microoptical components with optimum surface qualities as well as an excellent long-term stability. We use facets of microlenses with 1 mm in diameter and a tunable focusing power to compensate for the focus shift for different viewing angles during the scanning procedure. The beam deflection for scanning is realized either by laterally shifting spherical elements or by a tunable microprism with reduced aberrations. For both actuators we present a design, fabrication concept and first experimental results.