摘要
人眼除具有可用眼镜或接触镜校正的低阶像差(离焦、像散)之外,还普遍存在高阶像差。高阶像差的存在影响着屈光系统的成像质量。为研究高阶像差对视觉功能的影响,利用自适应光学技术,建立了具有校正高阶像差和产生高阶像差双重功能的人眼高阶像差校正和视觉分析系统。介绍了系统实现高阶像差校正和视觉分析的工作原理;阐述了波前校正器、哈特曼波前探测系统、控制系统等关键单元技术;列出了系统对泽尼克模式像差的校正效果,绝大多数像差从0.5λ降低到0.2λ以下;阐明系统功能的实现过程,并给出仿真实验的结果。该系统为进一步研究高阶像差对视功能的影响提供了有效的手段。
Besides defocus and astigmatism that can be corrected by wearing spectacles or contact lens, there are also higher-order aberrations in human eye which influence the visual function. By using adaptive optics technology, the system of higher-order aberrations correction and vision analysis for human eye has been developed. The principle of correcting high-order aberrations and vision analysis is presented, and key element technologies, such as wavefront corrector, Hartmann wave-front detector and control system, are explained, correct capability to Zernike modal aberrations are listed, most of aberrations that RMS error equals 0.5λ decreased below 0.2λ, the simulated result is shown to explain how the function of system is realized. It is an effective tool to study the influence of higher-order aberrations to vision function.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2007年第5期893-897,共5页
Acta Optica Sinica
基金
国家重点自然基金(60438030)资助课题
关键词
自适应光学
成像系统
视觉分析
高阶像差
adaptive optics
imaging system
higher-order aberrations
vision analysis
