HOLOGRAPHIC DISPLAY SYSTEM AND METHOD FOR REDUCING EFFECTS OF QUANTISATION NOISE
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United States of America Patent
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Issued Date -
May 16, 2024
app pub date -
Jan 18, 2024
filing date -
Jul 21, 2021
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Abstract
A holographic display system comprises a light source configured to emit at least partially coherent light; a modulator arranged to be illuminated by the at least partially coherent light and to generate a light field which is a quantised representation of a target light field, H; and a spatial filter delimiting an aperture in a Fourier plane. A Fourier transform of the target light field, F(H), substantially does not overlap (i) a Fourier transform of a complex conjugate of the target light field, F(H*), (ii) a Fourier transform of the target light field multiplied by the complex conjugate of the target light field, F(HH*), (iii) a Fourier transform of a square of the target light field, F(H2), and (iv) a Fourier transform of a square of the complex conjugate of the light field F(H*2). The aperture substantially corresponds to F(H) in the Fourier plane.
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