查询词典 aperture of lens

A design example of a lens whose operating wavelength is 0.4～0.9μm,focal length is 400 mm,full field-of-view angle is 6.2°and relative aperture is 1:4 is given on the basis of the theoretical calculation and the optimization of optical design software ZEMAX.

通过理论计算和ZEMAX光学设计软件的优化，给出工作波长范围在0.4～0.9μm、焦距为400mm、视场角为6.2°、相对孔径为1∶4的设计实例。设计结果表明，二级光谱得到了很好的校正，像质优良。

A design example of a lens whose operating wavelength was 0.4-0.7μm,full fieldofview angle was 80°and relative aperture was 1∶1.5 was given on the basis of the theoretical calculation and the optimization of optical design software ZEMAX.

通过理论计算和ZEMAX光学设计软件的优化，给出工作波长为0.4～0.7μm、全视场角为80°，相对孔径为1∶1.5的镜头设计实例。

The imaging quality of this lens was evaluated. The results show that it has an excellent imaging quality, at spatial frequency of 42lp/mm, its MTF value is greater than 0.5 for 0.7ω, and it meets all the specifications and requirements of WFOV and large relative aperture for underwater photographic application.

质量评价结果表明：设计的摄影物镜成像质量优异，在空间频率为42lp/mm时0.7ω的MTF值高于0.5，且达到各项性能指标，能够满足水下微光摄影物镜对大视场大相对孔径的需求。

The motion, creation and annihilation of phase singularities occur in the focal region, which depends on the truncation parameter,the spherical aberration and the half angle of the aperture lens.

在焦区位相奇点会出现移动、产生和湮灭，并与截断参数、球差和光阑透镜半角有关。

Additionally, It was found that the spherical aberration of thermal lens has the aperture effect of preventing higher-order transverse modes from oscillating.

此外，从实验上发现并分析了Nd：YVO〓晶体的热透镜球差对于高阶横模的抑制作用。

Groups of 27 8- by 8-pixel compressed blocks are gathered into macroblocks for recording. VAUX data includes recording date and time, lens aperture, shutter speed, color balance, and other camera setting data.

有27组8乘8像素的压缩区块聚合成大区块来纪录在影带上，VAUX资料则是包括录影时的日期和时间，镜头光圈，快门速度，色彩平衡，和其他摄影机设定的资料。

An apparatus for taking photographs,generally consisting of a lightproof enclosure having an aperture with a shutter ed lens through which the image of an object is focused and recorded on a photosensitive film or plate.

照相机一种用于拍摄照片的器械，一般由一遮光室组成，该遮光室带有一有层叠透镜的光圈，物体的影象通过它聚焦并被记录在一感光底片或感光板上

An apparatus for taking photographs, generally consisting of a lightproof enclosure having an aperture with a shuttered lens through which the image of an object is focused and recorded on a photosensitive film or plate.

照相机：一种用于拍摄照片的器械，一般由一遮光室组成，该遮光室带有一有层叠透镜的光圈，物体的影象通过它聚焦并被记录在一感光底片或感光板上英语词汇网 www.wbw.com.cn

While a lens takes scattered beams of light and focuses them into a cone or ray it them projects on to film, a pinhole works by allowing such a small aperture that the beam coming in is quite small, and therefore remains relatively unscattered.

虽然镜头采取分散光束和重点成圆锥或射线是他们的项目，以电影，一个针孔的作品，让这样一个小孔径的光束将在相当小，因此仍相对

Finally, the law that laser reflection characteristics varies with the parameters of the transmitting laser beam and the cat eye optical lens, including aperture, focus and focal shift etc, is achieved.

得出了猫眼效应反射光特性随着入射激光参数以及猫眼光学镜头的基本参数——口径、焦距、离焦量变化的规律。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。