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Exploiting chromatic aberration to spectrally encode depth in reflectance confocal microscopy

机译:利用色差在反射共聚焦显微镜中对深度进行光谱编码

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We present chromatic confocal microscopy as a technique to axially scan the sample by spectrally encoding depth information to avoid mechanical scanning of the lens or sample. We have achieved an 800 μm focal shift over a range of 680-1080 nm using a hyperchromat lens as the imaging lens. A more complex system that incorporates a water immersion objective to improve axial resolution was built and tested. We determined that increasing objective magnification decreases chromatic shift while improving axial resolution. Furthermore, collimating after the hyperchromat at longer wavelengths yields an increase in focal shift
机译:我们提出彩色共聚焦显微镜作为一种通过频谱编码深度信息来轴向扫描样品的技术,以避免对透镜或样品进行机械扫描。使用高色度透镜作为成像透镜,我们在680-1080 nm的范围内实现了800μm的焦移。建立并测试了一个包含水浸物镜以改善轴向分辨率的更复杂的系统。我们确定增加物镜放大倍率可减少色偏,同时改善轴向分辨率。此外,在较长波长的高色度后进行准直会增加焦点偏移

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