摘要A double-layer harmonic diffractive element (HDE) structure is investigated and the optimization procedure is given based on the equation of diffraction efficiency of the double-layer diffractive optical element. A new infrared double-layer inverted telephoto-optical system with an HDE is designed, which can work in the mid- and far-infrared wavebands. The diffraction efficiency of the system at each wavelength in the designed two wavebands is larger than 90%, which improves the image contrast and the imaging quality significantly.
Abstract：A double-layer harmonic diffractive element (HDE) structure is investigated and the optimization procedure is given based on the equation of diffraction efficiency of the double-layer diffractive optical element. A new infrared double-layer inverted telephoto-optical system with an HDE is designed, which can work in the mid- and far-infrared wavebands. The diffraction efficiency of the system at each wavelength in the designed two wavebands is larger than 90%, which improves the image contrast and the imaging quality significantly.
FAN Chang-Jiang;WANG Zhao-Qi;LIN Lie;ZHANG Mei;FAN Hai-Ying. Design of Infrared Inverted Telephoto-Optical System with Double-Layer Harmonic Diffractive Element[J]. 中国物理快报, 2007, 24(7): 1973-1976.
FAN Chang-Jiang, WANG Zhao-Qi, LIN Lie, ZHANG Mei, FAN Hai-Ying. Design of Infrared Inverted Telephoto-Optical System with Double-Layer Harmonic Diffractive Element. Chin. Phys. Lett., 2007, 24(7): 1973-1976.
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