A new design and fabrication method is presented for creating large-format (>100 mirror facets) image mappers for a snapshot hyperspectral biomedical imaging system called an image mapping spectrometer (IMS). To verify this approach a 250 facet image mapper with 25 multiple-tilt angles is designed for a compact IMS that groups the 25 subpupils in a 5 X 5 matrix residing within a single collecting objective's pupil. The image mapper is fabricated by precision diamond raster fly cutting using surface-shaped tools. The individual mirror facets have minimal edge eating, tilt errors of < 1 mrad, and an average roughness of 5.4 nm.
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机译：提出了一种新的设计和制造方法，用于为快照高光谱生物医学成像系统（称为图像映射光谱仪（IMS））创建大幅面（> 100个镜面）图像映射器。为了验证该方法，为紧凑型IMS设计了具有25个多倾斜角度的250刻面图像映射器，该IMS将25个子瞳孔分组为一个收集物镜的瞳孔内的5 X 5矩阵。图像映射器是使用表面形工具通过精密的金刚石光栅飞刀切割制造的。各个镜面的边缘吃光最少，倾斜误差<1 mrad，平均粗糙度为5.4 nm。
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