The properties of the'Standard Drop'were defined and its formation and shape monitored using a photomacrographic zoom system in conjunction with a video camera and a stroboscope.

Optical design of zoom objective with optical compensation method

光学补偿法的变焦距物镜的光学设计

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The zooming movement of zoom optical lens is qualitatively analyzed according to operating principle of telescope. The movement equation for the lens moving lens set is derived according to the object-image relationship of the ideal optical system.

根据望远镜的工作原理，对变焦距光学镜头的变焦运动进行了定性分析，并且根据理想光学系统的物像关系式推导出该镜头运动镜组的运动方程。

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The experiments show that the method can be convenient to realize zooming control of the continuous zoom optical lens.

实验表明，该方法能方便地实现连续变焦距光学镜头的变焦控制。

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Solving the Cam Curve of the Compensating Group about Zoom Lens Using Dynamic Optical Theory

应用动态光学理论求解变焦光学系统补偿组凸轮曲线

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Realization of Zooming Control for a Continuous Zoom Optical Lens with Step Motor

用步进电机实现连续变焦距光学镜头的变焦控制

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Zoom Theory of the Optical System for Laser Beam

激光束光学系统的变焦理论

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Design of zoom projection lens for the light engine of LCoS rear-projection TV

LCoS背投光学引擎中变焦投影物镜设计

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Although traditional mechanical zoom can change the magnification and adapt to changes in the shape of the actual size of the object, it demands very high in mechanical construction because mechanical optical zoom system lens group needs to be moved very precisely.

虽然传统的机械式变焦的方法能够改变放大率，适应实际物体的大小形状的变化，但是由于机械式光学变焦系统中各个透镜组的移动要非常精确，对机械构造的要求也就非常的高。

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When using dedicated attachments in macro and wide-angle filters and lenses, you need to zoom out to avoid the "black circle" that will appear on the corners of your frame.

如果你用外置镜头比如微距或者广角，就不要用光学变焦，要不然会得到周围的暗角效果。

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If Apple ( or another smartphone supplier) figures out how to fit optical zoom into a slim smartphone then for me at least a separate camera becomes all together unnecessary.

如果苹果（或其他智能手机公司）能想出怎样在薄薄的手机里潜入光学变焦，那么至少对我来说另带一个相机就没有必要了。

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After the view guide mechanism capturing the related position, the utility model cooperates with the optical zoom lens unit to timely view the images in all positions.

本实用新型可由景点指引机构获得相关位置后，配合光学变焦镜头单元于源地实时观看各位置影像。

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A novel integrated device of optofluidic variable-focus microlens array is proposed to solve the problems of electrical focus-tuning and integration fabrication of microlens array.

提出一种微流控光学变焦透镜阵列芯片，以解决变焦透镜阵列的电控调谐和集成化制造方法问题。

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The cam CAD system for optical zoom lens applys computer technology to design zoom lens automatically with high precision and high efficiency.

光学变焦凸轮计算机辅助设计系统是应用计算机技术，实现对变焦凸轮高精度、高效率的自动化设计。

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It also offers22X optical zoom, power over Ethernet, and progressive output for smooth reproduction of moving objects.

它还提供了22倍光学变焦，以太网供电和移动物体平稳图像的逐步输出。

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Optical zoom actually gets a closer shot, while digital zoom essentially just crops an image tighter.

光学变焦可以真正得到一个更近的镜头，而数字变焦基本上只是把图像裁切得更紧凑。

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Optical zoom is the real deal of the zoom will not affect the image quality of photos;

光学变焦是实打实的变焦，不会影响照片的成像质量；

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The new Telephoto camera has three times optical zoom for even closer close-ups.

新型长焦摄像，具有三倍光学变焦，可以拍更近的特写。

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Does this camera have optical or digital zoom?

这架相机使用的是光学变焦还是数字变焦？

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It features an ultra-long, built-in40X optical zoom and a wide-angle lens in addition to automatic focus and image stabilization.

除了自动对焦和图像稳定外，它还采用超长期、内置40X光学变焦和广角镜头。

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starting with a new 77-millimeter telephoto camera with 3X optical zoom,

首先全新77mm长焦摄像头支持3倍光学变焦，

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