We considered intensity distribution of light focused by a high numerical aperture lens without spherical aberration through a planar interface between materials of mismatch refractive index. 采用光的矢量衍射理论,研究了场振幅为高斯分布的平面波入射到无球差高数值孔径物镜上,折射率失配对共焦显微术的影响,并进行数值模拟。
Propagation Properties of Higher-order Bessel Pulsed Beams Focused by a Dispersive Aperture Lens 高阶贝塞尔脉冲光束通过色散光阑透镜的传输特性
Short focal length ( high aperture) lens Measurement of optical surface and foci of long focal length lens by CGH 短焦距(大孔径)透镜计算全息法测量长焦透镜面形和焦距
This paper deals with an investigation of intensity distribution of the partially coherent Bessel beams focused by an aperture lens. 研究了部分相干贝塞尔光束经过光阑透镜聚焦后的光强分布。
Short focal length ( high aperture) lens 短焦距(大孔径)透镜
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。
Generation and Focusing Property with High-Numerical Aperture Lens of Vectorial Polarized Beam 矢量偏振光束的产生及其高数值孔径聚焦性质
Meanwhile, according to the experimental results, the resolution of the imaging system is decided by the size of unit on the DMD when the aperture of lens is big enough. 且实验表明在透镜口径足够大时,成像系统的分辨率由DMD面元大小决定。
Focusing of an anomalous hollow beam by a spherically aberrated aperture lens and its phase singularities in the focal region 异常空心光束通过球差光阑透镜的聚焦和在焦区的位相奇异特性
Short focal length ( high aperture) lens testing method for apparent opening size of geotextiles 短焦距(大孔径)透镜土工布有效孔径测定法
Focal shift in a Gaussian beam focused by an aperture lens separated system 高斯光束通过光阑&透镜分离系统的焦移
Spectral of partially coherent light passing through an aperture-lens separation system 部分相干光通过光阑-透镜分离系统的光谱特性
Objective lens of beam expander with a high-order curved surface can correct aberration for a deep relative aperture lens. 带有高次曲面的扩束器物镜能对大相对孔径的透镜校正像差。
As an application example, the transformation of LG beams through a system with rectangular aperture and lens separated is studied numerically. 作为应用例,对LG光束通过光阑透镜分离系统的变换作了数值计算和分析。
Theory of design and development of condensing lens type large aperture Fresnel lens 聚光镜型大口径菲涅耳透镜的设计理论和研制
Numerical calculation examples are given for the focusing of cosh Gaussian beams by an aperture lens. A comparison is made, which has shown the advantage of this method and the results are in good agreement with those obtained by the straight forward integration of Collins formula. 对双曲余弦高斯光束通过有光阑限制的薄透镜聚焦系统进行了数值计算,计算结果与直接由柯林斯(Collins)公式所得结果一致,且此解析方法便于进行物理分析,可节约大量机时。
Starting from the generalized Huygens-Fresnel diffraction integral ( Collinsformula), the focal switch in spherically aberrated LG beams passing through an optical system with the aperture lens separated is studied. 从广义惠更斯-菲涅尔衍射积分方程(Collins公式)出发,研究了有球差LG光束通过光阑-透镜系统后的焦开关现象。
Axial Intensity Distribution of a Bessel-Gauss Beam Focused by an Aperture Lens 有限束宽聚焦贝塞尔-高斯光束轴上的光强分布
Analytic expressions for axial intensity distributions of a Bessel-Gauss beam focused by an aperture lens have been derived by using Coffins diffraction integral, and discussed by numerical calculations. 运用Collins衍射积分推导了贝塞尔-高斯光束经圆光阑限孔透镜后的轴上光强表达式。通过数值计算讨论了轴上光强的分布规律。
In order to reduce the aperture of lens possibly in case of enhancing the utilization ratio of laser energy and enlarging imagery area, we illuminate the front Fourier transform lens with convergent light. 在提高激光能量利用率和增大成像面积前提下,为了尽量减小透镜口径,采用会聚光照明前傅立叶变换透镜。
This paper focuses on four main types of axial-symmetrical electrostatic lens: film aperture lens, double-cylinder immersion lens, convex lens and immersion object lens. 本文具体分析了膜孔透镜,浸没双圆筒透镜(包括等径和不等径),单透镜和浸没物镜这四类最主要的静电透镜。
Quadrupole lens for dynamic focus and astigmatism control in an elliptical aperture lens gun 椭圆膜孔透镜电子枪中用作动态聚焦和象散控制的四极透镜
When the measuring system of point scanning confocal microscope is designed, the parameter of object lens is important because the measuring precision of the system are determined by the numerical aperture of lens. 在设计点扫描激光共焦显微镜测量系统时,物镜参数的选择是至关重要的,因为它的数值孔径大小直接影响着系统的测量精度。
By this way we can design high diffraction efficiency, as well as lager numerical aperture diffractive lens under current machine fabrication condition. 该方法在现有衍射透镜加工设备分辨率条件下,可提高衍射透镜的衍射效率,增大衍射透镜的数值孔径。
The necessity of the lens electrode coaxality especially the coaxality of the aperture with lens axis is emphasized. 提出了制作透镜电极时保持轴对称、特别是限制光栏必须位于透镜光轴上的必要性。
In the analysis, the accelerating tube was divided into three elements: entrance aperture lens, uniform accelerating field and exit aperture lens. 在分析中,把加速管看成由入口膜片、均匀场加速区和出口膜片三个单元组成;
And the use of high numerical aperture lens in the probe improves the lateral resolution. 这种方法可以实现利用较少的接收通道实现较大的接收孔径,提高图像的横向分辨率。
While the incident beam degrading to plane wave and the relative aperture of lens being large, the described optical field distribution along the axis of lens 1s consistent with the results given in the book of "Principles of Optics". 当高斯光波退化为平面波和透镜相对孔径较大时,它所描述的光轴上的场分布与《光学原理》.一书上的结果一致。
For large aperture lens, scanning method was developed to measure the focal length in different locations within the lens. 针对被测透镜通常为大口径透镜的问题,我们采用了扫描的方法,这样可以测量透镜不同位置的焦距。
In design, we use large aperture lens to enhance the signal power, use avalanche photodiode ( APD) as a photoelectric detector, using interference filter and the field diaphragm to reduce system background noise to improve signal to noise ratio of echo signal. 在设计上,采用大口径物镜以提高回波信号强度,采用雪崩光电二极管(APD)作为光电探测器件,通过干涉滤光片和视场光阑降低系统背景噪声以提高回波信号信噪比。