Biologically inspired ultrathin arrayed camera for high-contrast and high-resolution imaging
| Autor: | Kisoo Kim, Jae-Kwan Ryu, Kyung-Won Jang, Ki-Hun Jeong |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
lcsh:Applied optics. Photonics
Biological inspiration Letter Materials science Channel (digital image) 02 engineering and technology 01 natural sciences law.invention 010309 optics Optics law Optical transfer function 0103 physical sciences lcsh:QC350-467 Image sensor High resolution imaging High contrast Optoelectronic devices and components business.industry lcsh:TA1501-1820 Imaging and sensing 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Pinhole (optics) Photolithography 0210 nano-technology business lcsh:Optics. Light |
| Zdroj: | Light, Science & Applications Light: Science & Applications, Vol 9, Iss 1, Pp 1-7 (2020) |
| ISSN: | 2047-7538 |
| DOI: | 10.1038/s41377-020-0261-8 |
| Popis: | Compound eyes found in insects provide intriguing sources of biological inspiration for miniaturised imaging systems. Here, we report an ultrathin arrayed camera inspired by insect eye structures for high-contrast and super-resolution imaging. The ultrathin camera features micro-optical elements (MOEs), i.e., inverted microlenses, multilayered pinhole arrays, and gap spacers on an image sensor. The MOE was fabricated by using repeated photolithography and thermal reflow. The fully packaged camera shows a total track length of 740 μm and a field-of-view (FOV) of 73°. The experimental results demonstrate that the multilayered pinhole of the MOE allows high-contrast imaging by eliminating the optical crosstalk between microlenses. The integral image reconstructed from array images clearly increases the modulation transfer function (MTF) by ~1.57 times compared to that of a single channel image in the ultrathin camera. This ultrathin arrayed camera provides a novel and practical direction for diverse mobile, surveillance or medical applications. |
| Databáze: | OpenAIRE |
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