The equipment can be used not only in welding with lens focusing,but also in cutting with off.
6m rad,为TEM00与TEM01的混合模式;三工位光路转换器的使用,提高了工作效率,增加了加工的灵活性;根据焊接和切割具体要求,设计了透镜聚焦和离轴抛物面反射聚焦两种光束的聚焦方式。
We experimentally investigate the broadband partially coherent light focused by a focusing lens and especially the chromatic aberration effects of a focusing lens on the spectrum of the focusing light field at the geometrical-image plane.
实验研究了宽带部分相干光被会聚透镜聚焦,着重研究了聚焦透镜的色差效应对在透镜几何成像面的聚焦光场光谱的影响。
Based on this principle,we put forward a simple method for generating a Bessel beam with glass capillary and focusing lens.
对光纤中传播的电磁场分析发现,其纵向分量可以用贝塞耳函数及第二类变态贝塞耳函数来描述,据此,提出一种利用玻璃毛细管和聚焦透镜实现贝塞尔光束的简易方法。
manual zoom lens
(镜头)手控可变焦距透镜
variable focal length (cylindrical) lens
变焦(距)(圆柱)透镜
rear-controlled zoom lens
背面调整变焦距透镜
The focal length differs with the thickness of the lens
焦距长底随透镜的厚度而变化。
short focal length (high aperture) lens
短焦距(大孔径)透镜
autofocus zoom lens
自动聚焦变焦距镜头
Study on Liquid Lens Technology and Its Application in Micro Zoom Optical System
液体透镜技术及其在微型变焦距系统中的应用
Measurement of optical surface and foci of long focal length lens by CGH
计算全息法测量长焦透镜面形和焦距
F"J6Rf%H'P*Qo?D~z;RC F[v
快速变焦距手术显微镜
best image plane of zoom lens
变焦距物镜的最佳像面
image plane displacement of zoom lens
变焦距物镜像面位移
auto iris zoom lens
自动光圈变焦距镜头
zoom stereomicroscope
快速变焦距立体显微镜
Electrically driving and controlling adaptive 128 element×128 element liquid crystal micro-lens array with tunable focal length
电控可变焦128元×128元自适应液晶微透镜阵列
The wearer of such glasses could change the focus by sliding a switch along one arm of the frame.
带这种眼镜的人通过调整一只眼镜腿上的滑动开关可以改变焦距。
(physiology) the automatic adjustment in focal length of the lens of the eye.
（生理学）用眼的透镜来自动调节焦距。
Measurement of Long Focal Length of Lens Utilizing Talbot Effect and Morie Technique;
利用泰伯—莫尔法的透镜长焦距测量
The Study of Measuring Convex lens Focal Distance with CCD;
用CCD测量凸透镜焦距实验的研究