Spectrally encoded endoscopy (SEE) is an ultra-miniature endoscopy technology that encodes each spatial location on the sample with a different wavelength. One challenge in SEE is achieving color imaging with a small probe. We present a novel SEE probe that is capable of conducting real-time RGB imaging using three diffraction orders (6th order diffraction of the blue spectrum, 5th of green, and 4th of red). The probe was comprised of rotating 0.5 mm-diameter illumination optics inside a static, 1.2 mm-diameter flexible sheath with a rigid distal length of 5 mm containing detection fibers. A color chart, resolution target, and swine tissue were imaged. The device achieved 44k/59k/23k effective pixels per R/G/B channels over a 58° angular field and differentiated a wide gamut of colors.

中文翻译：

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使用三阶衍射的RGB彩色前视光谱编码内窥镜

光谱编码内窥镜检查（SEE）是一种超小型内窥镜检查技术，可以用不同的波长对样品上的每个空间位置进行编码。SEE的一项挑战是用小探针实现彩色成像。我们提出了一种新颖的SEE探头，该探头能够使用三个衍射级（蓝色光谱的6阶衍射，绿色的5和红色的4）进行实时RGB成像。该探针由在直径为1.2 mm的静态柔性护套内旋转的直径为0.5 mm的照明光学元件组成，该护套的远端长度为5 mm，包含检测纤维。对颜色图表，分辨率目标和猪组织成像。该设备在58°角场上，每个R / G / B通道实现了44k / 59k / 23k有效像素，并区分了多种色域。