| 摘要 |
Reading light ( 26 ) is phase-modulated by a phase-modulating spatial light modulator ( 12 ), the phase-modulated reading light ( 26 ) is Fourier-transformed, and an image of the Fourier-transformed reading light is focused on an output plane ( 24 ) to form an optical pattern. In this method, 0-order light in the phase-modulated reading light ( 26 ) is blurred on the output plane ( 24 ). As the 0-order light is blurred, the luminance of the 0-order light is reduced on the output plane ( 24 ). Since the 0-order light is not blocked, the shape of the optical pattern is not limited.
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