Practical method for color computer-generated rainbow holograms of real-existing objects

Yile Shi; Hui Wang; Yong Li; Hongzhen Jin; Lihong Ma

doi:10.1364/AO.48.004219

Applied Optics
Vol. 48,
Issue 21,
pp. 4219-4226
(2009)
•https://doi.org/10.1364/AO.48.004219

Practical method for color computer-generated rainbow holograms of real-existing objects

Yile Shi, Hui Wang, Yong Li, Hongzhen Jin, and Lihong Ma

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Yile Shi, Hui Wang, Yong Li, Hongzhen Jin, and Lihong Ma, "Practical method for color computer-generated rainbow holograms of real-existing objects," Appl. Opt. 48, 4219-4226 (2009)

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Abstract

A novel method for computer-generated rainbow holograms (CGRHs) of full-color objects is proposed. First, a new algorithm for fabricating full-color CGRHs of real-existing objects is proposed based on the interrelationship between coding of a CGRH and reconstruction of the hologram. Second, a color rainbow hologram for a real-existing object is generated by combining the proposed algorithm and computer-generated hologram generating system. Finally, the hologram is outputted by an auto-microfilming system. The principle of the algorithm, the process of hologram calculation, and the hologram generating system for real-existing objects and experimental results are presented. The experimental results demonstrate that the new method is feasible.

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Input range	X, 359 to $1196 mm$ ; Y, 269 to $897 mm$ ; Z, 110 to $750 mm$
Light-receiving lens	focal distance $f = 8 mm$
Accuracy	X, $\pm 1.40 mm$ ; Y, $\pm 1.40 mm$ ; Z, $0.40 mm$
Imaging device	3D data, $1 / 3 inch$ frame transfer CCD (340,000 picture elements); color data, 3D data are shared (color separation by rotary filter)
Output data points	3D data, $640 \times 480$ ; color data, $640 \times 480$

Object points	148,663
Object size	$29.7340 mm \times 25.4357 mm \times 13.6051 mm$
Wavelength	$632.8 nm$
Width of slit	$3 mm$
Length of slit	$100 mm$
Distance between slit and hologram (for $λ_{r}$ )	$300 mm$
Angle between reference beam and Z axis	$6 °$
Sampling points of hologram	$20, 026 \times 17, 356$
Hologram size	$30 mm \times 26 mm$

Input range	X, 359 to $1196 mm$ ; Y, 269 to $897 mm$ ; Z, 110 to $750 mm$
Light-receiving lens	focal distance $f = 8 mm$
Accuracy	X, $\pm 1.40 mm$ ; Y, $\pm 1.40 mm$ ; Z, $0.40 mm$
Imaging device	3D data, $1 / 3 inch$ frame transfer CCD (340,000 picture elements); color data, 3D data are shared (color separation by rotary filter)
Output data points	3D data, $640 \times 480$ ; color data, $640 \times 480$

Object points	148,663
Object size	$29.7340 mm \times 25.4357 mm \times 13.6051 mm$
Wavelength	$632.8 nm$
Width of slit	$3 mm$
Length of slit	$100 mm$
Distance between slit and hologram (for $λ_{r}$ )	$300 mm$
Angle between reference beam and Z axis	$6 °$
Sampling points of hologram	$20, 026 \times 17, 356$
Hologram size	$30 mm \times 26 mm$

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Equations (28)

Applied Optics