Simulated human eye retina adaptive optics imaging system based on a liquid crystal on silicon device
Jiang Bao-Guang (姜宝光)ab, Cao Zhao-Liang(曹召良)ab, Mu Quan-Quan(穆全全)ab, Hu Li-Fa (胡立发)a, Li Chao (李超)ab, Xuan Li (宣丽)a
a State Key Lab of Applied Optics, Changchun Institude of Optics, Fine Mechanics and Physics, Chinese Academy of sciences, Changchun 130033, China Beijing 100039, China; b Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
Abstract In order to obtain a clear image of the retina of model eye, an adaptive optics system used to correct the wave-front error is introduced in this paper. The spatial light modulator that we use here is a liquid crystal on a silicon device instead of a conversional deformable mirror. A paper with carbon granule is used to simulate the retina of human eye. The pupil size of the model eye is adjustable (3--7mm). A Shack-Hartman wave-front sensor is used to detect the wave-front aberration. With this construction, a value of peak-to-valley is achieved to be 0.086$\lambda$, where $\lambda$ is wavelength. The modulation transfer functions before and after corrections are compared. And the resolution of this system after correction (69lp/m) is very close to the diffraction limit resolution. The carbon granule on the white paper which has a size of 4.7μm is seen clearly. The size of the retina cell is between 4 and 10μm. So this system has an ability to image the human eye's retina.
Received: 19 March 2008
Revised: 12 May 2008
Accepted manuscript online:
Fund: Project supported by the National
Natural Science Foundation of China (Grant Nos 60578035, 50473040
and 60736042) and the Science Foundation of Jilin Province, China
(Grant Nos 20050520 and 20050321-2).
Cite this article:
Hu Li-Fa (姜宝光), Xuan Li (曹召良), Jiang Bao-Guang (穆全全), Cao Zhao-Liang (胡立发), Mu Quan-Quan (李超), Li Chao (宣丽) Simulated human eye retina adaptive optics imaging system based on a liquid crystal on silicon device 2008 Chin. Phys. B 17 4529
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