Which shows that the hybrid refractive - diffractive lens can effectively eliminate the aberrance of a telephoto lens with lower weight and simple structure 结果表明,利用折衍混合能有效地校正长焦物镜的像差,极大地降低系统的重量和复杂程度,不失为长焦物镜设计的一条有效途径。
Nevertheless , different eyes have different visual outcomes like fingerprints , imperfections in the eyes which causes the image we somewhat blurry at night , that are defined as high order aberrations 因此,眼睛若带有微小瑕疵会使晚间视力模糊一点,这是由于高阶像差的存在所引致。
Mel 80 is very fast with all the technology of carl zeiss meditec involved in this refractive laser system . very fast mel 80 is super fast , it shortens ablation times remarkably Mel 80准分子激光系统具有速度快光斑小精确性高等特点,可与角膜地形图像差仪器互相结合,实现个人化激光矫视疗程。
Using the wavefront aberration map and the mtf , interaction between aberrations to improve or reduce visual performance is discussed . 2 . a model for wavefront reconstruction from slopes of reflected wave is presented 2 .从理论上建立了由眼底发出的测试波前斜率测量值重建波前曲面(数值上等于波前像差)的模型。
Currently the measurement and correction of aberration is a focus points in the field of ophthalmology . the examination of wave - front aberration is a main method that is used to observe optical system of the human eye 人眼波前像差测量与矫正是目前眼科领域的研究热点之一,而波前像差测量是观察人眼光学系统是否完备的一种比较全面的方法。
The aspheric optical element has many merits , for example , correcting optical aberrations , improving image quality , extending range of action , simplifying system organization , reducing the cost and reducing weight 现代光学系统中大量采用非球面镜以矫正像差、改善像质、扩大视场、增大作用距离、简化光学系统结构、降低成本、减轻重量。
Visx customvue wavescan aberrometer measures such high order aberrations , and then wavescan software translates this digital information to the laser system , driving a new level of precision and accuracy of lasik surgery 现在威视波前像差分析仪,能有效地量度高阶像差经计算并处理后传送到激光矫视仪器,使激光矫视手术的效果得到进一步提升。
The preliminary conclusion shows that the maximum rate of compression ratio changes is about 2 % and the change rate is less when the peak - to - valley value of wavefront aberration is less than a quarter of wavelength and incident angle is properly 脉冲压缩光栅对系统达到衍射极限时,在选择适当的入射角度时,光栅波像差所引起的脉冲压缩比变化并不大。
The experimental results show that the excimer laser refractive system is characteristic of short cure time , high accuracy , surface smoothness and easy to integrate the wavefront aberration technology 实验结果表明,该矫正系统具有治疗时间短、矫正精度高、角膜切削表面光滑,易于集成波前像差技术实现“个体化切削”方案等优点,具有较好的临床应用前景。
Higher order aberrations are widely believed by ophthalmic experts to contribute to common night vision problems , including glare and halos . the ladarwave customcornea system provides the precision capture you need for truly customized vision correction 但对于高阶像差high order aberration ,传统的激光矫视手术甚至是眼镜或隐形眼镜则显得束手无策。