Chinese Journal of Lasers, Volume. 26, Issue 11, 993(1999)
Multichannel Frequency Spectrum Analysis Elements Made by Binary Optical Technology
Two kinds of binary optical elements used in the multichannel frequency spectrum analysis are introduced. One is prepared by overlapping two line-type zone plates. It acts as a two-cylindrical lens system. The other is prepared by overlapping a line-type zone plate and a circular zone plate. It has the effect of a system that consists of a cylindrical lens and a spherical lens. The focal length in x direction of these elements is two times that in y direction, so that if put an object in the focal distance (fx), its Fourier frequency spectrum in x direction and its image in y direction on the focal plane in the distance fx can be got. In this paper, the principle, the technique, the data and the result of these elements are also given.
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[in Chinese], [in Chinese], [in Chinese], [in Chinese]. Multichannel Frequency Spectrum Analysis Elements Made by Binary Optical Technology[J]. Chinese Journal of Lasers, 1999, 26(11): 993