positive lens

用法例句

By applying the theory of the image of thin lens,the mensuration of three parameters of the positive lens is discussed in this article.

本文运用薄透镜成像理论 ,讨论了正透镜的三个主要参数———透镜焦距、透镜镜面曲率半径以及透镜材料的折射率的测定 ,并用实验对该测量原理进行了验证。

Calculation of correcting lens surface based on Lagrange multiplier method;

基于Lagrange系数乘子法的校正透镜曲面计算

A fast and accurate algorithm is applied to compute a great deal of sample points for correcting lenses.

给出了校正透镜曲面的计算机辅助设计方法 ,综合考虑了曝光台各种因素对校正透镜曲面的影响 ,用高精度的测量仪器对初始透镜的几何尺寸及试验管的着屏误差进行测量 ;提出了正反设计方法 ,采用快速、高精度的算法及大量样点计算校正透镜的曲面 。

The polynomial surface modeling method for CRT correcting lens design is based on some special rules of mislanding, but it is not suitable to irregular mislanding because of probable divergence of the surface modeling algorithm.

校正透镜设计是荫罩式阴极射线管的关键技术和“瓶颈”技术 。

The article first puts forward an approximating hypothesis of arc on the rectified meniscus camber of color picture tube from actual conditions,it then sums up the experimental calculating formulae of meniscus camber in accordance with the operating principles of meniscus and advances calculation procedures and design methods of rectified meniscus.

首先对彩管矫正透镜曲面进行了圆弧近似假设,然后根据透镜的工作原理,总结出透镜曲面的经验计算公式,提出了矫正透镜的计算过程和设计方法,同时还提出了矫正透镜的修正计算公式和修正方法。

AUTOMATIC DESIGN OF CORRECTOR SYSTEMS FOR CASSEGRAIN TELESCOPES

卡塞格林望远镜改正透镜系统的自动设计

We analyze the positive and negative lens effect caused by the hole theoretically and give the expression of normalized transmittance in this condition.

本文从理论上分析了因孔洞而产生的正透镜或负透镜效应并给出了归一化透过率的表达式。

Design of Correcting Lens for Color-kinescopes with Computer-generated Holography (CGH)

用计算全息法设计彩色显象管校正透镜

Just as a double convex lens enlarges, so a double concave lens reduces.

正象双凸透镜可以放大那样，双凹透镜也可以缩

Evidently, it would be desirable for the lens to form a magnified, erect image.

显然，我们希望透镜成一个放大的正象。

Aperture:Compound lens corrected for spherical aberration and coma. Also called Aplanat.

消球差透镜:矫正球面销售量差和慧星差的复合式透镜。

The focal length of the conelensing lens should be such that the image of the source just fills the projecting lens.

聚光透镜的焦距应使光源的像正好照满放映透镜。

Just as a double convex lens enlarges, so a double concave lens reduces

正象双凸透镜可以放大那样，双凹透镜也可以缩小。

a concave lens [mirror]

凹透镜 [凹面镜]

meniscus (shaped) lens

凹凸透镜，弯月形透镜

aplanat [aplanatic] lens

消球差透镜，齐明透镜

Apochromatic lens: Compound lens corrected for chromatic aberration, i.e. the three primary colours, red, green and blue are corrected. Also called Apochromat.

复消色差透镜:矫正色差的复合式透镜：即是红、绿和蓝三原色的色差都已矫正。

Most of us are familiar with positive-index lenses- in cameras, magnifying glasses, microscopes and telescopes.

大多数人熟悉的是具有正折射率的透镜，常见于照相机、大镜、微镜及望远镜之中。

Mrs. Pardiggle had been regarding him through her spectacles with a forcible composure.

帕迪戈太太故作镇静，正透过眼镜瞅着他。

Clear lens extraction and intraocular lens implantation for correction high myopia.

透明晶体摘除眼内镜片植入矫正高度近视

air-spaced doublet

双不胶透镜; 双分离透镜; 双分透镜; 空气隙双合透镜; 分离式双透镜

manual zoom lens

(镜头)手控可变焦距透镜

objective lens of the transmission electron microscope

透射电子显微镜物镜