The Effects of Astigmatic Lens on the Focal Switch of the H-G Beams 透镜的像散对H-G光束的焦开关影响
The distance between the limbus and the buckle was positive associated with astigmatic power changes in corneal anterior and posterior central zone; 环扎带距离角巩缘的距离与角膜前、后表面中央区散光度改变呈正相关;
From the propagation theory of partially coherent light, spectral anomalies and spectral switches of Gaussian Schell-model beams focused by an astigmatic aperture lens are studied. 研究了部分相干高斯-谢尔模型光束经过整数阶螺旋形位相板之后形成的部分相干涡旋光束,着重研究这种部分相干涡旋光束的传输特性。
Focusing Properties of Non-uniformly Polarized Beams through an Astigmatic Lens with Annular Aperture 非均匀偏振光束通过环状光阑像散透镜的聚焦特性
There were positive correlation in astigmatic degree and axis. 散光度数无相关性,散光轴向正相关;
Astigmatic dials are targets used for the detection and correction of astigmatism. 散光盘是用于辅助检测并矫正散光的视标。
In this paper, the differential astigmatic detection method for defocus measurement with one-way defocused detector is developed from the conventional differential as. 本文在传统差动像散检测方法基础上,给出一种基于单向离焦的差动像散检测方法。
These results afford some references for the design and analysis of complex astigmatic cavities. 这一结果对复杂像散腔的设计与分析提供了很好的依据。
It is proved that astigmatic labor relations affect competitive advantage and long-term profitability of the firms. 实践证明,对抗性的劳动关系必然影响企业的市场竞争力和长期盈利水平。
Analysis of Characteristic and Effective Factors of Corneal Aberrations in Myopic Astigmatic Eyes 近视散光眼角膜像差的特征及其影响因素分析
A simple method using an astigmatic cavity to determine the thermal lens of laser crystals is reported. 给出一种测量激光器稳定运转时增益介质中热透镜焦距的方法。
A position detector and3 beams of ray are used to measure the prismatic, spherical and astigmatic powers. 提出一种眼镜度数测量方法,利用位置探测器和3条光线实现对棱镜度、球镜度和散光度等镜片参数的测量。
Study on Kerr Lens Mode Locked Laser with Astigmatic Resonator 具有像散的克尔透镜锁模腔的研究
By using Wigner distribution function, the beam combination characteristics of general astigmatic Gaussian beams are studied. The analytical formulas of intensity profiles and beam propagation factor ( M 2) for incoherent and coherent combinations are derived. 利用Wigner分布函数,对复杂像散高斯光束的并合问题进行了详细研究,得到了相干和非相干并合光束的光强分布和M2因子的解析表达式。(2)总论;
The complex astigmatic wave theory is used to analyse the electromagnetic characteristics of 3-D radome. 复象散波理论是一种分析三维介质雷达罩电磁特性的有效方法。
Most of the astigmatic axes before 40 years old were distributed as direct astigmatism. 无论何种散光类型,40岁以下各年龄组散光眼的散光轴向大多呈顺规性散光分布。
The astigmatic cavity with a cylindrical len is studied by using matrix optics method. 本文用矩阵光学的方法研究了内含柱面透镜的象散腔。
Based on the Collins formula, the propagation expression of astigmatic Cosh-Gaussian beams passing through a bifocal lens system is derived. 基于Collins公式,推导了有像散双曲余弦高斯光束通过双焦透镜系统后的解析传输公式,分析了该光束轴上光强分布和焦移。
Possibility of producing image-plane holograms of astigmatic system is analyzed theoretically, and verified experimentally. 从理论上分析了象散光学系统产生象平面全息图的可能性,并在实验上得到证实。
Taking the second-order-moment and power of the bucket as the beam width definition, changes of the beam parameters such as the beam width and far-field divergence angle of Gaussian beams after passing through an astigmatic lens are studied both analytically and numerically. 以二阶矩和环围功率作为束宽定义,对高斯光束通过像散透镜后光束参数,包括束宽和远场发散角作了解析和数值研究。
Conclusion: Astigmatic axis can be changed with growth of the age and distributed as inverse astigmatism. 结论:散光轴向可随年龄增长而改变,并呈逆规性散光状态的变化。
Results: Most of the astigmatic axes were distributed as vertical and horizontal meridian. 结果:散光轴向的总体分布以垂直经线和水平经线为多。
The characteristics of three dimensional astigmatic beams were discussed by using their second order intensity moments. 采用光束的二阶强度矩的方法讨论三维像散光束的光束特性。
Results There were positive correlations between the length of axis and myopic degree, and astigmatic degree. 结果近视度和散光度与眼轴长呈正相关;
In this paper, transformation of astigmatic Hermite cosh Gaussian beams through an optical symmetrizing system is studied. 研究了用于厄米高斯光束对称化的光学系统对像散厄米双曲余弦高斯光束的变换。
In addition, a common method for astigmatic compensation was introduced when allow for folding cavity's astigmation. 针对折叠腔的像散,推出了常用的一种腔内插入布氏片的像散补偿方法。
An approach based on laser polarizing heterodyne astigmatic principle was proposed for absolute tracing measurement of discontinuous surfaces. 提出一种基于激光偏振光差动像散原理的非连续曲面绝对跟踪检测方法与技术。
The issue on group velocity dispersion, self phase modulation, Kerr-lens mode-locking and self-starting of laser oscillator has been studied, and the compensation for astigmatic of cavity and for dispersion of self-mode-locked femtosecond Ti: Sapphire oscillator are also analyzed. 研究了飞秒脉冲激光器中的群速度色散、自相位调制、克尔透镜锁模以及锁模自启动问题;分析了自锁模飞秒Ti:Sapphire激光器的色散补偿与激光谐振腔的像散补偿问题;
By numerical calculation, the beam parameters, such as the beam width and far-field divergence angle of sin-Gaussian beams passing through an astigmatic lens are studied. 通过数值计算对正弦-高斯光束通过像散透镜后的光束参数,例如束宽和远场发散角等参数作了研究。
of or relating to a defect in the eye or in a lens caused by a deviation from spherical curvature which prevents light rays from meeting at a common focus and so results in distorted images