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首页> 外文期刊>CEAS Space Journal >Development of micro-mirror slicer integral field unit for space-borne solar spectrographs
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Development of micro-mirror slicer integral field unit for space-borne solar spectrographs

机译：用于空间太阳能谱仪微镜切片机整体场单元的开发

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AbstractWe present an innovative optical design for image slicer integral field unit (IFU) and a manufacturing method that overcomes optical limitations of metallic mirrors. Our IFU consists of a micro-mirror slicer of 45 arrayed, highly narrow, flat metallic mirrors and a pseudo-pupil-mirror array of off-axis conic aspheres forming three pseudo slits of re-arranged slicer images. A prototype IFU demonstrates that the final optical quality is sufficiently high for a visible light spectrograph. Each slicer micro-mirror is 1.58 mm long and 30$$upmu$$μm wide with surface roughness$$le$$≤1 nm rms, and edge sharpness$$le$$≤0.1$$upmu$$μm, etc. This IFU is small size and can be implemented in a multi-slit spectrograph without any moving mechanism and fore optics, in which one slit is real and the others are pseudo slits from the IFU. The IFU mirrors were deposited by a space-qualified, protected silver coating for high reflectivity in visible and near IR wavelength regions. These properties are well suitable for space-borne spectrograph such as the future Japanese solar space mission SOLAR-C. We present the optical design, performance of prototype IFU, and space qualification tests of the silver coating.]]>
机译：<！[cdata [ <标题>抽象 ara id =“par1”>我们为图像切片器积分字段提供了一种创新的光学设计单位（IFU）和一种克服金属镜光学限制的制造方法。我们的IFU由45个排列，高度窄，平坦的金属镜子的微镜切片机和伪瞳孔阵列的偏远圆锥形圆锥形圆锥形圆锥形圆形圆锥形，其形成三个重新安排的切片器图像的三个伪狭缝。原型IFU证明了可见光谱仪的最终光学质量足够高。每个平滑微镜都是1.58 mm长，30 $$ Upmu $$ μ m宽，表面粗糙度 $$ Le $$ < arequationsource format =“mathml”> ≤ 1 nm rms和边缘锐度 $$ Le $$ ≤ 0.1 $$ Upmu $$ < arequationsource格式=“mathml”> μ M等。这个IFU的尺寸很小，并且可以在多圈光谱仪中实现，没有任何移动机制和前光学，其中一个狭缝是真实的，而其他一个狭缝是来自IFU的伪狭缝。 IFU反射镜被空间合格的受保护银涂层沉积，用于可见和近红外波长区域的高反射率。这些属性适用于太空光谱仪，例如未来日本太阳能空间使命太阳能-c。我们介绍了光学设计，原型IFU的性能，以及银涂层的空间鉴定试验。 ]]>

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