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1. 中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,吉林 长春,130022
2. 中国科学院大学, 北京 100049
3. 中国科学院 苏州生物医学工程技术研究所,江苏 苏州,215163
收稿日期:2012-10-27,
修回日期:2013-03-02,
网络出版日期:2013-03-22,
纸质出版日期:2013-06-15
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余鑫鑫, 李大禹, 夏明亮, 齐岳, 曹召良, 宣丽. 基于液体变焦透镜离焦补偿机构的设计[J]. 液晶与显示, 2013,28(3): 344-348
YU Xin-xin, LI Da-yu, XIA Ming-liang, QI Yue, CAO Zhao-liang, XUAN Li. Design of Defocus Compensate Mechanism Based on Liquid Lens[J]. , 2013,28(3): 344-348
余鑫鑫, 李大禹, 夏明亮, 齐岳, 曹召良, 宣丽. 基于液体变焦透镜离焦补偿机构的设计[J]. 液晶与显示, 2013,28(3): 344-348 DOI: 10.3788/YJYXS20132803.0344.
YU Xin-xin, LI Da-yu, XIA Ming-liang, QI Yue, CAO Zhao-liang, XUAN Li. Design of Defocus Compensate Mechanism Based on Liquid Lens[J]. , 2013,28(3): 344-348 DOI: 10.3788/YJYXS20132803.0344.
为了减小人眼离焦像差对液晶自适应光学视网膜成像系统的过大压力
设计了一种基于液体变焦透镜的离焦补偿机构。该离焦补偿机构能连续调焦
且无需任何组件平移运动
有利于小型化。根据该液体透镜的曲率压变的变焦原理
选择适当传动比的蜗杆传动作为旋转进动"放大"机构
放大了外压环旋转角度与屈光度的对应关系
设计出步长为0.2
D
的离焦补偿机构
为液晶自适应光学视网膜成像系统的高对比度成像提供了保障。
To decrease the influence of defocus on liquid crystal adaptive optics system
improve the imaging quality
a mechanism for defocus compensate has been designed.The mechanism was based on liquid lens
which can change the focal length continuously without any moving part. In order to design the adjust mechanism reasonably
calculation have been taken on the relationship between the rotation angle of the outer ring and the deflection of film center. Then 0.2 diopter is choosen as the division value. The parameters of the mechanism were based on relationship between the rotation angle of the outer ring with deflection of film center and the division value.It shows a good performance in liquid crystal adaptive optics system.
Talcott K E, Ratnam K, et al. Longitudinal study of cone photoreceptors during retinal degeneration and in response to ciliary neurotrophic factor treatment [J]. Investigative Ophthalmology & Visual Science, 2011, 52(5):2219-2226.[2] Chapman N, Dell'omo G, Sartini M, et al. Peripheral vascular disease is associated with abnormal arteriolar diameter relationships at bifurcations in the human retina [J]. Clinical Science, 2002, 103:111-116.[3] 吕沛霖,朱秀萍,石维华,等. 565例糖尿病患者视网膜病变初步调查及早期诊断 [J]. 国际眼科杂志, 2009, 9(1):156-158.[4] EI Hage S G,Berny F. Contribution of the crystalline lens to the spherical aberration of the eye [J]. J. Opt. Soc. Am, 1973,63(3):205-211.[5] Millodot M,Sivak J.Contribution of the cornea and lens to spherical aberration of the eye [J].Vision Res, 1979, 19(6):685-687.[6] Hardy J W, Lefebvre J E, Koliopoulos C L. Real-time atmospheric compensation [J]. Acta Optica Sinica, 2011, 31(9): 360-369.[7] 姜文汉,张雨东,饶长辉,等.中国科学院光电技术研究所的自适应应用光学研究进展 [J]. 光学学报, 2011,31(9):0900106(1-9).[8] Liang J, Williams d R, Miller D T. Supernormal vision and high-resolution retinal imaging through adaptive optics [J]. J. Opt. Soc. Am. A,1997, 14(11):2884-2892.[9] 陵宁,张雨东,饶学军,等.用于活体人眼视网膜观察的自适应光学成像系统 [J]. 光学学报, 2004,24(9):1153-1158.[10] Thurston R N,Berreman D W. Equilibrium and stability of liquid-crystal configurations in an electric field [J]. J. Appl. Phys., 1981, 52:508-509.[11] Horne D F. Lens Mechanism Technology [M]. Bristol:Adam Hilger,1975:541-553.[12] 张鹰.基于液体透镜的变焦光学系统研究[D].长春:中国科学院长春光学精密机械与物理研究所,2012.[13] 赵凯华,钟锡华. 光学 [M].北京:北京大学出版社,1987:50.[14] 蒲良贵,纪名刚. 机械设计 [M].第八版,北京:高等教育出版社,2006:238-249.
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