中国物理B ›› 2008, Vol. 17 ›› Issue (12): 4529-4532.doi: 10.1088/1674-1056/17/12/033

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Simulated human eye retina adaptive optics imaging system based on a liquid crystal on silicon device

胡立发1, 宣丽1, 姜宝光2, 曹召良2, 穆全全2, 李超2   

  1. (1)State Key Lab of Applied Optics, Changchun Institude of Optics, Fine Mechanics and Physics, Chinese Academy of sciences, Changchun 130033, China Beijing 100039, China; (2)State Key Lab of Applied Optics, Changchun Institude of Optics, Fine Mechanics and Physics, Chinese Academy of sciences, Changchun 130033, China;Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
  • 收稿日期:2008-03-19 修回日期:2008-05-12 出版日期:2008-12-20 发布日期:2008-12-20
  • 基金资助:
    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).

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   

  1. 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
  • Received:2008-03-19 Revised:2008-05-12 Online:2008-12-20 Published:2008-12-20
  • Supported by:
    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).

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摘要： 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 0.086Λ, where Λ 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.

关键词: liquid crystal device, adaptive optics, ophthalmic optics

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.

Key words: liquid crystal device, adaptive optics, ophthalmic optics

中图分类号:  (Anatomy and optics of eye)

  • 42.66.Ct
42.79.Bh (Lenses, prisms and mirrors) 42.79.Hp (Optical processors, correlators, and modulators) 42.79.Kr (Display devices, liquid-crystal devices)