1. Biologically inspired microlens array camera for high-speed and high-sensitivity imaging.
- Author
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Hyun-Kyung Kim, Young-Gil Cha, Jae-Myeong Kwon, Sang-In Bae, Kisoo Kim, Kyung-Won Jang, Yong-Jin Jo, Kim, Min H., and Ki-Hun Jeong
- Subjects
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CMOS image sensors , *ROTATING disks , *INSECTS - Abstract
Nocturnal and crepuscular fast-eyed insects often exploit multiple optical channels and temporal summation for fast and low-light imaging. Here, we report high-speed and high-sensitive microlens array camera (HS-MAC), inspired by multiple optical channels and temporal summation for insect vision. HS-MAC features cross-talk-free offset microlens arrays on a single rolling shutter CMOS image sensor and performs high-speed and high-sensitivity imaging by using channel fragmentation, temporal summation, and compressive frame reconstruction. The experimental results demonstrate that HS-MAC accurately measures the speed of a color disk rotating at 1950 rpm, recording fast sequences at 9120 fps with low noise equivalent irradiance (0.43 µW/cm2). Besides, HS-MAC visualizes the necking pinch-off of a pool fire flame in dim light conditions below one thousandth of a lux. The compact high-speed low-light camera can offer a distinct route for high-speed and low-light imaging in mobile, surveillance, and biomedical applications. [ABSTRACT FROM AUTHOR]
- Published
- 2025
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