Phase computer-generated hologram encoding error correction method based on least square fitting
A computational hologram and error correction technology, applied in the field of computational holography, to reduce difficulty, improve accuracy and improve efficiency
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[0036] 1. Select a quadratic paraboloid with rotational symmetry, and the calculation formula is:
[0037] (1)
[0038] In the formula: ;x, y are the coordinates of any point on the quadratic paraboloid;
[0039] , is the radius of curvature of the vertex of the quadratic paraboloid;
[0040] , is the surface eccentricity, let Corresponds to a quadratic paraboloid;
[0041] The axis of rotational symmetry of the quadratic paraboloid is perpendicular to the x, y coordinate plane;
[0042] 2. Taking the quadratic paraboloid as the object surface F1 to be recorded, the object light wave function reflected by the object surface F1 is,
[0043] (2)
[0044] where A is the amplitude of the object light wave, is the phase of the object light wave, and k=2p / λ is the light wave vector. The diffused light emitted from the object surface is directly irradiated on the recording plane F2 without passing through optical elements, and the light amplitude on this plane ...
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