在高光譜成像系統的開發過程當中，而在此系統中，一個能夠使得入射光同時於偵測器上水平及垂直方向聚焦的光柵系統為最關鍵的元件之一。本研究期望能夠藉由設計一可變條紋間距式之光柵使得高光譜成像系統不需如傳統之配置需要再加入兩面功能為修正像差之反射鏡即可達成上述需求。
以往在設計一可變條紋間距式之光柵時，對於其所產生之像差仍無一修正之通則。因此在本研究中我們發展一自動化優化光柵之流程，以期光柵在分光時其像差能夠盡量的被縮減，進而提升此系統之解析度。
而在本研究中對於像差修正之主要策略為縮小成像於偵測器時之斑點大小。為了驗證此策略之成效，我們基於一個為中紅外波段(7500nm至13500nm)光譜儀所使用之凹面光柵建立一個光柵模型。
本研究結果顯示，新的優化流程使得此光柵其所產生之像差能夠獲得縮減，系統之解析度也因此而大幅的提升。

Hyperspectral imaging (HSI) is gradually entering the mainstream of remote sensing for applications in resource management, agriculture and environmental monitoring. While developing the device for HSI, an aberration-corrected concave grating is a key optical component for HSI optical system.
The aberration–corrected concave grating in a spectrometer enables both spatial and spectral information to be performed simultaneously. To develop a concave grating for HSI system, to achieve flat field focusing in both horizontal and vertical direction is critically important. Typically aberration reduction is carried out by revising the light path function, still there’s no unified strategy developed.
The aim of this research is to develop a generalized automation aberration reduction procedure (ARP) that can be applied in any case of a concave grating spectrometer. The main strategy is to minimize the root-mean-square (RMS) spot sizes for the spectral range on the detector plane. To evaluate the performance, we built a model based on a previous concave grating designed for a mid-infrared (7.5μm ~13.5μm) spectrometer.
The result indicates that the new approach has a better performance in aberration reduction and spectral resolution.

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