Cui Qi, Park Jongchan, Lee Jaeyul, Wang Zhaoqiang, Gao Liang
Department of Bioengineering, University of California Los Angeles, Los Angeles, California 90095, USA.
Biomed Opt Express. 2022 Nov 15;13(12):6457-6469. doi: 10.1364/BOE.477752. eCollection 2022 Dec 1.
We present tunable image projection spectrometry (TIPS), a Fourier-domain line-scan spectral imager with a tunable compression ratio. Compared to state-of-the-art spatial-domain pushbroom hyperspectral cameras, TIPS requires much fewer measurements and provides a higher light throughput. Using a rotating Dove prism and a cylindrical field lens, TIPS scans an input scene in the Fourier domain and captures a subset of multi-angled one-dimensional (1D) projections of the input scene, allowing a tailored data compression ratio for a given scene. We demonstrate the spectral imaging capability of TIPS with a hematoxylin and eosin (H&E) stained pathology slide. Moreover, we showed the spectral information obtained can be further converted to depths when combining TIPS with a low-coherence full-field spectral-domain interferometer.
我们展示了可调谐图像投影光谱仪（TIPS），这是一种具有可调压缩比的傅里叶域线扫描光谱成像仪。与最先进的空间域推扫式高光谱相机相比，TIPS所需的测量次数少得多，并且具有更高的光通量。通过使用旋转道威棱镜和柱面场透镜，TIPS在傅里叶域中扫描输入场景，并捕获输入场景的多角度一维（1D）投影的一个子集，从而为给定场景提供定制的数据压缩率。我们用苏木精和伊红（H&E）染色的病理切片展示了TIPS的光谱成像能力。此外，我们表明，当将TIPS与低相干全场光谱域干涉仪结合使用时，所获得的光谱信息可以进一步转换为深度信息。
