Article ID Journal Published Year Pages File Type
852476 Optik - International Journal for Light and Electron Optics 2008 5 Pages PDF
Abstract

In this paper, the 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 with 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.

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Physical Sciences and Engineering Engineering Engineering (General)
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