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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 15,
  • Issue 6,
  • pp. 060901-
  • (2017)

Gradation representation method using a binary-weighted computer-generated hologram based on pulse-width modulation

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Abstract

We propose a simple gradation representation method using a binary-weighted computer-generated hologram (CGH) to be displayed on a high-speed spatial light modulator that can be controlled by the pulse-width modulation technique. The proposed method uses multiple bit planes comprising binary-weighted CGHs with various pulse widths. The object points of a three-dimensional (3D) object are assigned to multiple bit planes according to their gray levels. The bit planes are sequentially displayed in a time-division-multiplexed manner. Consequently, the proposed method realizes a gradation representation of a reconstructed 3D object.

© 2017 Chinese Laser Press

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