Tan Henry, Li Bingxi, Crozier Kenneth B
School of Physics, University of Melbourne, Parkville, VIC, 3010, Australia.
ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), University of Melbourne, Parkville, VIC, 3010, Australia.
Sci Rep. 2023 Aug 10;13(1):12958. doi: 10.1038/s41598-023-39778-z.
Smartphones are a potentially powerful platform for scientific instruments. Here, we demonstrate speckle spectroscopy with smartphone-level hardware. This technique promises greater performance thresholds than traditional diffraction gratings. Light is injected into an optical fiber and the emergent speckle patterns are imaged by a reversed-lens smartphone camera. The smartphone then uses an algorithm, running on a mobile computing app, to determine, in less than one second, the (hitherto unknown) input spectrum. We reconstruct a variety of visible-wavelength (470-670 nm) single and multi-peaked spectra using a tunable source. The latter also include a metameric pair, i.e., two spectra that are different, yet represent colors that are indistinguishable to the human eye.
智能手机是科学仪器的一个潜在强大平台。在此，我们展示了使用智能手机级硬件的散斑光谱技术。该技术有望实现比传统衍射光栅更高的性能阈值。将光注入光纤，然后通过反向镜头的智能手机摄像头对出射的散斑图案进行成像。智能手机随后使用在移动计算应用程序上运行的算法，在不到一秒的时间内确定（迄今未知的）输入光谱。我们使用可调光源重建了各种可见波长（470 - 670纳米）的单峰和多峰光谱。后者还包括一对同色异谱体，即两个不同的光谱，但代表的颜色对人眼来说是无法区分的。
