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报道一种利用象差校正平场全息凹面衍射光栅作为分光和成象元件的平场多色仪，该多色仪具有谱面平直、使用波段宽、集光本领强、体积小等优点。
The paper reports a flat field polychromatic instrument which utilizes the flat field holographic concave diffraction grating with aberration correction as the light splitting and imaging element. The multi-color instrument has the advantages of flat spectrum spectrum, wide band of use, strong light collecting ability and small volume.