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波前像差     
相关语句
  wavefront aberration
     · RESULTS: The degrees of myopia measured with wavefront aberration analyzer, autorefraction and phoropter were -6.18±2.77,-5.80±2.80,-5.88±2.72D respectively.
     结果:波前像差仪、自动验光仪、综合验光仪3种方法测得的球镜度数分别为-6.18±2.77,-5.80±2.80,-5.88±2.72D;
短句来源
     Results: 1. In myopic eye, RMS value of total wavefront aberration is 0.7361±0.4782um and RMS values of high-order aberration is 0.3963±0.2484um.
     结果:1.眼整体波前像差RMS值为0.7361±0.4782um,高阶像差RMS值0.3963±0.2484um;
短句来源
     RMS value for total wavefront aberration is 0.5727±0.4209μm and the RMS value of high-order aberration is 0.4258±0.3753μm.
     眼整体波前像差RMS值为0.5725±0.4209um,高阶像差RMS值0.4258±0.3573um;
短句来源
     2. To analyze the relative factors that keratorefractive surgery (LASIK or LASEK) changes the wavefront aberration.
     2.分析准分子激光手术(LASIK或LASEK)引起波前像差改变的相关因素。
短句来源
     Property analysis of wavefront aberration of different human eye’s pupils
     人眼不同瞳孔直径波前像差特性分析
短句来源
更多       
  wavefront aberrations
     The wavefront aberrations of human eyes at 3.1mm, 5.2mm and 6mm pupil diameters are measured by Hartmann-Shack human eye aberrometry.
     采用Hartmann-Shack人眼像差仪,测量了人眼在3.1mm,5.2mm和6mm瞳孔直径下的波前像差
短句来源
     The RMS values of wavefront aberrations shows that human eye’s wavefront aberrations increase with the increase of pupil diameter, the RMS values of Zernike 2-10 orders wavefront aberrations at 6mm and 5.2mm pupil diameters are 1.2-7.7 and 1.1-4.8 times larger than that at 3.1mm pupil diameter.
     波前像差的RMS值表明,随着瞳孔直径的增大,人眼各阶波前像差均随着增大。 与瞳孔直径为3.1mm时相比,瞳孔直径为6mm和5.2mm时,Zernike2-10阶波前像差的RMS值分别增大1.2-7.7倍和1.1-4.8倍。
短句来源
     To achieve Strehl ratio under diffraction limit, the orders of aberration to be corrected are pre2-4 orders, pre3-6 orders and pre5-7 orders of Zernike wavefront aberrations at 3.1mm, 4.1mm and 5.2mm pupil diameters, respectively. The orders of aberration to be corrected will increase with the increase of pupil diameter.
     在3.1mm,5.2mm和6mm瞳孔直径下,欲达到衍射极限的Strehl比率,分别需要矫正Zernike波前像差前2-4阶、前3-6阶和前5-7阶,需矫正的像差阶数随瞳孔直径的增大而增加。
短句来源
     Methods Wavefront aberrations in 37 subjects(72 eyes) were measured in small pupil(2-4mm) and big pupil (>6.5mm) by using WAF1000, a spatially resolved refractometer, at the preoperative and 1- month postoperative respectively.
     方法采用WFA1000型主观像差仪得到37例(72眼)近视眼患者LASIK手术前和术后1月大瞳(>6.5mm)和小瞳(2-4mm)的波前像差变化数据;
短句来源
     Influence of corneal refractive surgery on wavefront aberrations of human eye
     角膜屈光手术对眼波前像差的影响
短句来源
更多       
  wave-front aberration
     Conclusion The subjective wave-front aberration guided LASIK may decrease the postoperative increase of aberration,and improve the visual quality.
     结论波前像差引导的个体化切削可以减少LASIK术后像差增加,改善视觉质量。
短句来源
     The wave-front aberration of human eye was measured by a Hartmann-Shack wave-front sensor and the aberration data the Modulation Transfer Function could be obtained.
     利用Hartmann-Shack波前传感器测量的波前像差数据,求得眼睛光学系统的调制传递函数;
短句来源
     A review on wave-front aberration principle and using in refractive surgery
     波前像差及其在屈光手术中的应用
短句来源
     The use of the wave-front aberration procedure in refractive surgery
     波前像差技术及其在屈光手术中的应用
短句来源
     This article reviewed the principle about wave-front aberration,and induced its using in refractive surgery.
     对波前像差的相关理论及其在屈光手术中的应用进行了综述。
短句来源
更多       
  wave front aberration
     · RESULTS: The degrees of myopia measured with wavefront aberration analyzer, autorefraction and phoropter were -6.18±2.77,-5.80±2.80,-5.88±2.72D respectively.
     结果:波前像差仪、自动验光仪、综合验光仪3种方法测得的球镜度数分别为-6.18±2.77,-5.80±2.80,-5.88±2.72D;
短句来源
     Results: 1. In myopic eye, RMS value of total wavefront aberration is 0.7361±0.4782um and RMS values of high-order aberration is 0.3963±0.2484um.
     结果:1.眼整体波前像差RMS值为0.7361±0.4782um,高阶像差RMS值0.3963±0.2484um;
短句来源
     RMS value for total wavefront aberration is 0.5727±0.4209μm and the RMS value of high-order aberration is 0.4258±0.3753μm.
     眼整体波前像差RMS值为0.5725±0.4209um,高阶像差RMS值0.4258±0.3573um;
短句来源
     2. To analyze the relative factors that keratorefractive surgery (LASIK or LASEK) changes the wavefront aberration.
     2.分析准分子激光手术(LASIK或LASEK)引起波前像差改变的相关因素。
短句来源
     Property analysis of wavefront aberration of different human eye’s pupils
     人眼不同瞳孔直径波前像差特性分析
短句来源
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  wavefront aberration
To characterize the optical performance of the eye the deviation of the wavefront of a foveal image point from its ideal (spherical) shape (wavefront aberration) was determined.
      
The wavefront aberration is represented mathematically in Zernike polynomials.
      
However, the drastic changes of beam spot, beam intensity profile, modulation transfer function curve and wavefront aberration were not observed.
      
Using zoom optics, an additional aspheric lens surface, and a diffractive optical element together, the wavefront aberration and chromatic aberration are effectively reduced in a broad range of cover-layer thicknesses and wavelength variations.
      
Measurement of Wavefront Aberration of Human Eye Using Talbot Image of Two-Dimensional Grating
      
更多          
  wavefront aberrations
New methods of measuring wavefront aberrations of human eyes, using the Talbot image of a two-dimensional grating as a wavefront sensor and local shift of the Talbot image to calculate tilt of the wavefront are shown.
      
Wavefront aberrations can be measured even when the obtained image is degraded by defocusing or scattering.
      
To assess optical characteristics of bifocal soft contact lenses (BCLs) in use, we measured wavefront aberrations of human eyes, of eyes with a monofocal soft contact lens (MCL), and of eyes with a BCL.
      
Optical Quality of the Eye Degraded by Time-Varying Wavefront Aberrations with Tear Film Dynamics
      
Active or adaptive optics often require the ability to characterize wavefront aberrations using natural extended sources.
      
更多          
  wave-front aberration
It is shown that the wave-front aberration of human eye is of temporal variation and of synthesis with multi impact factors.
      
An extension to a general orientation of the wave-front aberration can easily be included.
      
The defocus parameter DW20 is expressed in wave-front aberration at the pupil rim in units of the wavelength of the light.
      
  其他


In this paper, a new formula (18) is given for calculating the optical transfer function with incoherent and partially coherent light. The new method is based on starting from the Kirchhoff diffraction integral and introducing the quasi wave front aberration (4) or (21), and using the exit pupil coordinates in the Fresnel approximation to derive the amplidute distribution of the image of a object point, and no requiring arrangement matched for the illumination light. The piecewise polynomial interpolations...

In this paper, a new formula (18) is given for calculating the optical transfer function with incoherent and partially coherent light. The new method is based on starting from the Kirchhoff diffraction integral and introducing the quasi wave front aberration (4) or (21), and using the exit pupil coordinates in the Fresnel approximation to derive the amplidute distribution of the image of a object point, and no requiring arrangement matched for the illumination light. The piecewise polynomial interpolations is used to calculating the quasi wave front aberration function expressed by the exit pupil coordinates. The method is better than the traditional in theory accuracy and in simplify of calculating the degree of quais coherent, which can be used for computing the anamorphic imaged optical systems.

本文给出在准单色光照明下,部分相干和非相干成像光学传递函数新的计算方法。从基尔霍夫衍射积分出发,引进准波前像差,并在菲涅尔近似下给出点像振幅分布,对照明光源不作匹配限制,计算公式简明,准相干度( 不同于传统的相干度) 容易计算。利用分片多项式插值计算准波前像差,从而可实现变形成像OTF 的计算

There is great interest in removing corneal tissue to re-shape the corneal using the small scanning-spot Excimer Laser Corneal System. The paper reviews the flying-spot scanning excimer laser corneal surgery system with own property right at home in terms of the principle of correction, exclusive high quality optical system and so on, and obtains very successful effect in clinical animals and blind eyes experiment.

近年来新型的小光斑高速飞点扫描准分子激光系统以其具有的治疗时间短、矫正精度高、角膜切削表面极其光滑、易于集成波前像差技术实现“个体化切削”方案等优点,成为眼科激光手术的研究热点.本文从理论基础、光学系统等方面综述了国内第一台具有自主知识产权的飞点扫描式激光系统,此系统在临床动物实验和盲眼实验中取得了非常好的效果.

An extended beacon wavefront detection method based on H S sensor is discussed In this method, the optical structure of a traditional H S sensor is modified by adding a field diaphragm to eliminate the problem of overlap among different sub aperture images on detection plan, and it measures the wavefront slope difference between two sub apertures with a fast correlation algorithm, in which a 2D correlation is reduced to 1D one and SSDA is adopted Optical experiments have demonstrated the feasibility...

An extended beacon wavefront detection method based on H S sensor is discussed In this method, the optical structure of a traditional H S sensor is modified by adding a field diaphragm to eliminate the problem of overlap among different sub aperture images on detection plan, and it measures the wavefront slope difference between two sub apertures with a fast correlation algorithm, in which a 2D correlation is reduced to 1D one and SSDA is adopted Optical experiments have demonstrated the feasibility of this method and thus shown that when modified, H S sensors can be used to detect wavefront produced by extended beacons as well

讨论了一种基于Hartmann Shack (H S)传感器的扩展信标相关波前探测方法。通过在传统H S探测光路的物平面上加入视场光阑消除了子孔径像斑的重叠问题 ,并利用一种快速相关算法计算各像斑的相对位移 ,进而得到各子孔径波前的相对斜率。光学实验研究证实了该相关波前探测方法能够较精确地测算出波前像差 ,从而使目前使用最多的H S传感器具有扩展信标波前探测能力

 
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