查询词典 Lens

A mirror, lens, or combination of lenses used to gather light and direct it upon an object or through a projection lens .

透镜含一个或多个透镜，用于辅助视力的一种工具，如单片眼镜或小望远镜

Secondly, using compound on-axial holographic lens to design a diffractive/refractive hybrid object lens.

随后，利用复合同轴全息透镜设计了一个衍／折混合照相物镜。

The invention relates to an optical pickup device, in particular to the optical pickup which is provided with two object lenses that are arranged around a lens supporting frame and can generate electromagnetic forces with different magnitudes correspondingly to the mass of the object lens.

本发明涉及光拾取装置，尤其是涉及在透镜支撑架周围装置有两个相对应各物镜的质量可产生大小互不相同的电磁力的物镜的光拾取器装置。

Its R/W device has a single laser source and a single object lens. The wavelength of laser source and the numerical aperture of object lens are between those of CD and DVD or same as those of CD.

此种光学记录媒体的读写装置具有单一激光光源以及单一物镜，激光光源的波长和物镜的数值孔径介于CD与DVD规格之间，或与CD规格相同。

An automatic focussing device that modifies the focal length of the lens systems in order to focus the same according to the distance from the telescopic spectacles to the object is allocated to the lens systems.

透镜系统配置有一个自动聚焦装置，它根据望远镜与对象的距离改变透镜系统的焦距使其聚焦。

Firstly, based on the basic theory of GRIN optics the optical effects of the spherical symmetry GRIN micro-sphere lens were analyzed systematically. Firstly, based on the basic theory of GRIN optics the optical effects of the spherical symmetry GRIN micro-sphere lens were analyzed systematically.

本工作从梯度折射率介质光学的基本理论出发，对球对称GRIN微球透镜的光学性能进行了系统的分析；研究了用球对称GRIN微球制作回归反射材料的可能；进而选择两种聚合物单体，采用悬浮扩散共聚法，研究制备了较大粒径的聚合物梯度折射率微球透镜。

Chapter 2: Expatiate on the basic theory of the GRIN micro-sphere-lens, especially on the classical model—MAXWELL fisheye lens, which demonstrates their excellent optical properties.Chapter 3: Simply introduced the concept of retro-reflection, retro-reflection materials, the fabrication of traditional glass sphere and the possibility of the application of GRIN polymer micro-sphere on retro-reflection.

第三章：介绍了回归反射的概念、回归反射材料的现状；研究了用麦克斯韦鱼眼微球制作回归反射材料的可能，并与传统的均匀折射率玻璃微球回归反射材料的性能作了比较，得出将麦克斯韦鱼眼微球用作回归反射材料不仅可以大幅度降低原先对材料折射率的过高要求，还可明显提高回归反射的效率的结论。

The result showed that the Lens Image Analysis System could detect the level of lens opacification in vivo objectively and quantitatively.

通过上述实验，结果显示：晶体图像分析系统能够对活体晶体混浊程度进行实时定量检测和分析，是活体晶体混浊程度客观评价的可靠手段，对白内障的早期诊断、流行病学调查和抗白内障药物疗效评价具有重要意义。

Purpose: To investigate the influence of retinal photocoagulation with an indirect ophthalmoscopy contact lens on corneal endothelial cells.Methods: Seventeen eyes of 17 patients were evaluated, and corneal endothelial cells were measured twice: just before retinal photocoagulation using an indirect ophthalmoscopy contact lens and 33.2 ± 10.2 days after surgery.

为研究采用间接检眼镜接触镜进行视网膜激光光凝对角膜内皮细胞的影响，对17例患者的17眼进行检测并对角膜内皮细胞检测两次：视网膜激光光凝术前和术后33.2±10.2天检测。

At present, major producers such as digital radio and digital camera lens, scanner lens and optical components.

目前主要生产数码射像和数码照相机镜头，扫描仪镜头及光学元件。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。