The astronomers found an "X-ray mass" only a tenth of the mass found using the gravitational lens method.
天文学家发现“X射线估算的质量”仅有“引力透镜”方法估算的质量的十分之一。
In this method, when one star passes in front of another, as seen from Earth, the nearer star's gravity ACTS like a lens, bending and magnifying the more distant star's light.
当天文学家用这种方法从地球上观测到一颗恒星在另一颗恒星前“走过”时，距地球较近的这颗恒星的重力就如同一个镜头，将较远的那颗恒星的光弯曲并放大。
A method of making the Fresnel lens is described.
本文还描述了制造菲涅耳透镜的方法。
A new experimental scheme of measuring lens focal length has been put forward on the basis of the improved laser plate shearing interference method.
本文在改进的激光平板剪切干涉法基础上，提出了测量透镜焦距的一种新的实验方案。
The method USES the model of radial nonlinear distortion with the symmetry of optical axis to obtain correction coefficients of the optical lens, and then corrects the distortion image.
该方法利用与光轴对称的径向畸变数学模型求出光学镜头的校正系数，对畸变图像进行校正。
The design method of wavefront corneal contact lens by the objective optometry is presented.
提出了一种客观验光的波前角膜接触镜的设计方法。
A new method to fabricate aspherical compound lens was proposed.
介绍了一种制作非球面复合透镜的新方法。
The principle and method of applying laser technology to the lens centering are discussed. The merits of it are high efficiency and accuracy.
本文介绍了激光技术应用于光学透镜定心的加工原理和方法，它具有高效率、高精度的优点。
The lens designed by this method has small size, high light efficient, accurate beam control, it can achieve the required uniform rectangular facula for the street lighting.
通过该方法设计得到的透镜，体积小，高出光效率，光束准确可控，可得到满足道路照明需要的矩形规则均匀光斑。
In geometry optics basic content is asks the picture, the paper through to the physical image position relations analysis, obtains the fast judgment lens image formation rule the method.
几何光学中的一个基本内容是求像，本文通过对物像位置关系的分析，得出快速判断透镜成像规律的方法。
The method to measure the lens focus with laser speckle is described. The principle of this method is analysed and verified by experiment.
本文描述了利用激光散斑测量透镜焦距的方法，并对该方法进行了原理分析和实验验证。
The transmission characteristic of hollow duct was described by using a ray-tracing method and compared with the lens duct.
用光线追迹方法描述了空心导管的传输特性，并与透镜导管做了比较。
A new method of measuring the lens focus is presented, which is based onthe principle of transformation of the Gauss laser beam.
根据透镜对高斯激光束束宽的变换原理，提出了一种由变换前后发散角的变化确定透镜焦距的新方法。
A modularized design method for a zoom lens with mechanical compensation is presented.
介绍了采用机械补偿方式的变焦距镜头模块化设计方法。
Methods 72 cases(73 eyes)of traumatic cataract underwent surgery of intraocular lens implantation, traditional method and fixation method with sutures were selected according to the injury of capluse.
方法对72例（73眼）外伤性白内障按晶状体囊损伤情况采用常规方法和缝线固定法植入人工晶状体。
Using high light efficiency, small size, non-continuous surface free-form lens design method.
高出光效、小体积、非连续表面自由曲面透镜设计方法。
In order to have an efficient method of measuring aspherical lens, the authors use CGH interferometry with the mach-zehnder interferometer to test aspherical lens.
仿真结果与实际的测量结果对比表明，用本文的方法可以对非球面透镜进行高精确度、低成本的测量。
Objective the use of the factorial method in the calculation of lens combination to correct ametropic eyes.
目的在屈光不正的镜片联合运算中应用及推广因式分解法。
Lens driving device, lens barrel, optical apparatus, and method for assembling lens driving device.
透镜驱动装置，透镜筒，光学设备和组装透镜驱动装置的方法。
In this paper, a measuring method of convex lens foci in collimator is given.
介绍一种测量平行光管内凸透镜焦距的测量方法。
The new method for designing Fresnel lens has a wide serration breadth and unequal pitch.
用这一方法设计的菲涅耳透镜，齿宽较大，齿距不等。
The basic feature and principle of progressive addition lens (PAL) are introduced. Its soft design method based on Dirichlet principle was given.
介绍了渐变镜片的基本结构及工作原理，给出其基于狄利克雷条件的软设计方法。
Apparatus for conforming a planar film on an optical lens, method for functionalizing an optical lens by means of said apparatus, the optical lens so-obtained.
用于在光学镜片上成形平面膜片的装置，使用所述装置实现光学镜片的功能化的方法，由本方法所制得的光学镜片。
With an optical system composed by dressing-case of microscope and lens, this method provide lots of merits such as durability, convenience and high coupling efficiency.
本文介绍了一种用显微镜筒与透镜构成的光学系统来实现光源与光纤耦合的方法。
This method can correct the measurement of the thickness lens focal length lens produced by ignoring the error.
此方法可以修正测量透镜焦距忽略透镜厚度所产生的误差。
The true value diagrams are used to do the camera calibration. This method takes nonlinear distortion of the lens.
采用真值表法进行相机标定，将镜头畸变非线性微分化，有效克服了镜头畸变造成的影响。
This paper analyses the concept of OTF in sampled imaging system, discusses the problem incoherently coupled with OTF of lens and describes a new method for measuring MTF of CCD.
本文分析了抽样成像系统的OTF，并讨论了与透镜otf的非相干耦合问题，同时提出了一种新的测量CCD的MTF的方法。
This article introduces a method of measuring the radial of a concave lens with laser, grating and vemier caliper.
介绍了一种利用激光、光栅、游标卡尺测量凹透镜球面半径的方法。
This article introduces a method of measuring the radial of a concave lens with laser, grating and vemier caliper.
介绍了一种利用激光、光栅、游标卡尺测量凹透镜球面半径的方法。
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