Full-color and less-speckled modified Gerchberg–Saxton algorithm computer-generated hologram floating in a dual-parabolic projection system

Chien-Yu Chen; Hsuan-Ting Chang; Tsung-Jan Chang; Chih-Hao Chuang

doi:10.3788/COL201513.110901

Journals >Chinese Optics Letters >Volume 13 >Issue 11 >Page 110901 > Article

Chinese Optics Letters
Vol. 13, Issue 11, 110901 (2015)

Full-color and less-speckled modified Gerchberg–Saxton algorithm computer-generated hologram floating in a dual-parabolic projection system

Chien-Yu Chen^1、*, Hsuan-Ting Chang², Tsung-Jan Chang³, and Chih-Hao Chuang³

Author Affiliations

¹Graduate Institute of Color and Illumination Technology, National Taiwan University of Science and Technology, Taipei 10607, China

²Department of Electrical Engineering, National Yunlin University of Science and Technology, Yunlin 64002, China

³Department of Electronics Engineering, National Yunlin University of Science and Technology, Yunlin 64002, China

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DOI: 10.3788/COL201513.110901 Cite this Article Set citation alerts

Chien-Yu Chen, Hsuan-Ting Chang, Tsung-Jan Chang, Chih-Hao Chuang. Full-color and less-speckled modified Gerchberg–Saxton algorithm computer-generated hologram floating in a dual-parabolic projection system[J]. Chinese Optics Letters, 2015, 13(11): 110901 Copy Citation Text

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Abstract

This Letter proposes to apply full-color computer-generated holograms to the virtual image projection system so that the viewers can comfortably view floating images. Regarding the spatial division and distribution operation, a modified Gerchberg–Saxton algorithm is used for acquiring the phase infographics, which are input into the spatial light modulator for the reconstructed projection. Such a virtual image projection system could reach the vertical angle of view of 15°–75° and the horizontal angle of view 360°, and the mixed-light modulating proportion contains a 3 mW red light laser, a 2 mW green light laser, and a 2.6 mW blue light laser to achieve the full-color mixed-light proportion with a speckle contrast of 6.65%. The relative diffraction efficiency and root mean square error of the reconstructed image are 95.3% and 0.0524, respectively.