A location quantization algorithm for three-dimensional information display by using pure-phase computer-generated hologram

Tuo Li; Ran He; Yuhua Yang; Qiankun Gao; Yali Wang; Yishi Shi

doi:10.1117/12.907253

28 November 2011 A location quantization algorithm for three-dimensional information display by using pure-phase computer-generated hologram

Tuo Li, Ran He, Yuhua Yang, Qiankun Gao, Yali Wang, Yishi Shi

Author Affiliations +

Proceedings Volume 8202, 2011 International Conference on Optical Instruments and Technology: Solid State Lighting and Display Technologies, Holography, Speckle Pattern Interferometry, and Micro/Nano Manufacturing and Metrology; 820208 (2011) https://doi.org/10.1117/12.907253
Event: International Conference on Optical Instruments and Technology (OIT2011), 2011, Beijing, Beijing, China

Abstract

We propose an efficient calculation method to display three-dimensional information with purephase computer-generated holograms (CGHs). The object composed of points is conventionally divided into a set of planar segments vertically along with the axis. In this way, the number of planar segments is less than the number of points, which means that the total number of diffractions needed to calculate decreases. However, it is low efficient, for sometimes one planar segment only contains one point. We propose to quantize the locations of planar segments to solve this problem. The simplest way to quantize locations is to divide the object into the equal interval planar segments parallel with each other in the axis. The points out of these planar segments are projected to their nearest segments. Compared to traditional CGHs, the proposed method dramatically reduces the computing cost. Both simulations and experiments demonstrate the feasibility of the location quantization algorithm.

Citation Download Citation

Tuo Li, Ran He, Yuhua Yang, Qiankun Gao, Yali Wang, and Yishi Shi "A location quantization algorithm for three-dimensional information display by using pure-phase computer-generated hologram", Proc. SPIE 8202, 2011 International Conference on Optical Instruments and Technology: Solid State Lighting and Display Technologies, Holography, Speckle Pattern Interferometry, and Micro/Nano Manufacturing and Metrology, 820208 (28 November 2011); https://doi.org/10.1117/12.907253

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KEYWORDS

Computer generated holography

Quantization

Diffraction

3D displays

Holograms

Computer simulations

Spatial light modulators

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