First we must find the focus of a lens.
首先我们需要找到透镜的焦点。
It has a lens system to focus light onto the film at the back of the camera.
它的镜片系统可以将光线聚焦到相机后部的胶片上。
To achieve an in-focus and magnified image, the researchers actuate the hydraulics to change the curvatures of the lens and detector in a coordinated manner.
为了获取一个内焦距放大的图像，研究人员开动液压装置，改变透镜曲率，以协调方式改变检测器。
Chromatic Aberration — usually associated with objective lenses of refractor telescopes, is the failure of a lens to bring light of different wavelengths (colors) to a common focus.
色差-经常在折射望远镜的物镜上出现，是因为透镜不能把不同波长(颜色)的光聚焦到一点而形成的。
Depending on your vision, the right kind of lens helps your eye focus light properly and project a clear image onto the retina.
根据你的视力，配合适的透镜能帮助你的眼睛正确聚焦以在视网膜上投射一个清晰的镜像。
Although it is a big "home coming" day for Huahua's, Dashu is the focus of the lens.
虽然今天是花花回家的大日子，今天的镜头是属于大树的！
Focal length: The distance between the centre of a lens and its principal focus.
焦距：镜头中心与其主焦点的距离。
Firstly, a telescope system is made up with a concave lens and a long-focus convex lens, by which the angle of the parallel beam from the collimator can be change.
该方法借助一个焦距较长的凸透镜与被测凹透镜组成无焦系统，可以使准直管出射光束的张角发生改变；
A new method of measuring the lens focus is presented, which is based onthe principle of transformation of the Gauss laser beam.
根据透镜对高斯激光束束宽的变换原理，提出了一种由变换前后发散角的变化确定透镜焦距的新方法。
Telocentric lenses work with a wide depth of field. with a telocentric lens, you can image objects of different distances from the lens and the objects stay in focus.
具端著丝粒的镜头(注：我猜是类似于针孔镜头吧)具有宽阔之景深，以具端著丝粒的镜头，你能够将由镜头不同距离之目标物成像和保持目标物在焦。
Referring to Figure 7a, a micro-lens array having an array of individual lens elements 710-a May be used to focus light into the photodiodes.
请参照图七a，具有个别微透镜元件710- A之微透镜阵列可用以将光线聚焦在光电二极体上。
Under conditions of monochromatic light and a small object, the spherical aberration was the main factor which led to measuring error of focus of thin convex lens.
在单色光、小物条件下，球差是引起薄凸透镜焦距的测量误差的主要因素。
Novel techniques, such as a fish-eye lens used to obtain a 360-degree field of view without the need of focus adjustment, have recently been investigated and proved very useful in mobile robots.
小说技术，譬如鱼眼睛透镜使用获得360程度视野没有焦点调整需要，最近被侦查和被证明的非常有用在流动机器人。
The fisheye attachment provides an approx. angle of view of a 15mm lens and allows you to get within a millimeter of the subject and still be in perfect focus.
该鱼眼镜附件提供了一个约。角的15毫米的镜头意见，使您可以获取内的主题毫米，并且仍然在完美的焦点。
A group of golden light come into my eyes, the color is so warm and magic that I focus my camera on the spot, and adjusted camera lens to be able to see it clearly.
一群金的光进入我的眼睛，颜色是如此的温暖和魔术以致于我将我的照相机集中在斑点，而且调整了照相机透镜可以清楚地看见它。
The lens may take a variety of shapes, including Fresnel features, and may focus, collimate, or defocus the ultrasonic energy.
透镜可以采用多种形状，包括菲涅尔特征并且可以聚焦、准直或散焦该超声能量。
Using the infrared diffractive lens with such a configuration makes it possible to focus infrared rays within a wide range of wavelength band effectively.
通过使用该结构的红外线衍射透镜，可以高效地对宽范围的波段的红外线进行聚光。
The utility model relates to a solar energy battery structure which comprises a crystal silicon battery, on the top of which a convex lens used to focus the sunlight is arranged.
本实用新型涉及一种太阳能电池结构，包括晶硅电池，在晶硅电池的上方设置有用于 聚焦太阳光的凸透镜。
The utility model relates to a solar energy battery structure which comprises a crystal silicon battery, on the top of which a convex lens used to focus the sunlight is arranged.
本实用新型涉及一种太阳能电池结构，包括晶硅电池，在晶硅电池的上方设置有用于 聚焦太阳光的凸透镜。
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