光学
折反射系统
镜头(地质)
图像拼接
光圈(计算机存储器)
失真(音乐)
焦距
景深
视野
制作
消色差透镜
计算机科学
材料科学
物理
光电子学
放大器
替代医学
病理
医学
CMOS芯片
声学
作者
Andrea Toulouse,Johannes Drozella,Pascal Motzfeld,Nils Fahrbach,Valese Aslani,Simon Thiele,Harald Gießen,Alois Herkommer
出处
期刊:Optics Express
[The Optical Society]
日期:2022-01-03
卷期号:30 (2): 707-707
被引量:21
摘要
Simultaneous realization of ultra-large field of view (FOV), large lateral image size, and a small form factor is one of the challenges in imaging lens design and fabrication. All combined this yields an extensive flow of information while conserving ease of integration where space is limited. Here, we present concepts, correction methods and realizations towards freeform multi-aperture wide-angle cameras fabricated by femtosecond direct laser writing (fsDLW). The 3D printing process gives us the design freedom to create 180° × 360° cameras with a flat form factor in the micrometer range by splitting the FOV into several apertures. Highly tilted and decentered non-rotational lens shapes as well as catadioptric elements are used in the optical design to map the FOV onto a flat surface in a Scheimpflug manner. We present methods to measure and correct freeform surfaces with up to 180° surface normals by confocal measurements, and iterative fabrication via fsDLW. Finally, approaches for digital distortion correction and image stitching are demonstrated and two realizations of freeform multi-aperture wide-angle cameras are presented.
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