31 December 2013 Numerical study on statistical properties of speckle pattern in laser projection display based on human eye model
Author Affiliations +
In this paper, the laser speckle pattern on human retina for a laser projection display is simulated. By introducing a specific eye model ‘Indiana Eye’, the statistical properties of the laser speckle are numerical investigated. The results show that the aberrations of human eye (mostly spherical and chromatic) will decrease the speckle contrast felt by people. When the wavelength of the laser source is 550 nm (green), people will feel the strongest speck pattern and the weakest when the wavelength is 450 nm (blue). Myopia and hyperopia will decrease the speckle contrast by introducing large spherical aberrations. Although aberration is good for speckle reduction, but it will degrade the imaging capability of the eye. The results show that laser source (650 nm) will have the best image quality on the retina. At last, we compare the human eye with an aberration-free imaging system. Both the speckle contrast and the image quality appear different behavior in these two imaging systems. The results are useful when a standardized measurement procedure for speckle contrast needs to be built.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zhe Cui, Zhe Cui, Anting Wang, Anting Wang, Qianli Ma, Qianli Ma, Hai Ming, Hai Ming, "Numerical study on statistical properties of speckle pattern in laser projection display based on human eye model", Proc. SPIE 9042, 2013 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 90420E (31 December 2013); doi: 10.1117/12.2034502; https://doi.org/10.1117/12.2034502


Laser despeckled image
Proceedings of SPIE (August 21 2009)
A new method for laser speckle suppression
Proceedings of SPIE (February 15 2010)
Speckle-free laser probe beam
Proceedings of SPIE (July 02 2003)

Back to Top