Abstract
Two kinds of binary optical elements used in multi-channel one-dimensional Fourier spectrum analysis are introduced. One is equivalent to two overlapped line-type zone plates that are in two different orientations, and the other is composed of a line-type zone plate and a circular zone plate. In the output plane, the designed elements can simultaneously perform one-dimensional imaging of the input object in one direction and one-dimensional Fourier transformation in the perpendicular direction, respectively. Consequently, a series of one-dimensional spectra along different sectional lines of the object can be produced in the output plane. The elements are fabricated using the binary optical technique. Experiments show that these binary optical elements work well and are suitable for lensless optical processing systems.
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