A typical camera works by recording where light strikes the focal plane-the area onto which rays passing through a lens are captured.
一个典型的摄像机以记录光照射的焦平面上的方式工作——通过镜头被捕获的光线区域。
It is the distance between the lens diaphragm and the image plane.
即是镜头光圈与影像平面之间的距离。
Focal plane: The plane where light entering a lens forms a sharp image.
焦面：光线经过镜头后形成清晰影象的平面。
Based the math model of lens distortion, the plane roundness gridding model is used to calculate the lens distortion coefficients of radial distortion and other non-linear factor.
根据镜头畸变的数学模型，利用平面圆形网格模板的网格交点来求取镜头的径向、切向和薄棱镜畸变系数。
Kohler illumination was used in proximity lithography, and a flys eye lens was adopted to form multi-point source in order to uniform the light intensity on the mask plane.
接近式光刻中一般采用柯勒照明系统，并采用蝇眼透镜形成多点光源均匀掩模面的光场分布。
The position of the image and the amplitude variation in the optical field are associated with the focus and the distance from the object to the front focal plane of the lens system.
象的空间位置和光场振幅的变化与透镜系统的焦距以及物体距焦平面的位置有关。
In the experiment we used convex-plane unstable resonator, and analysis the convex mirrors and gain medium thermal lens as a telescope system.
实验采用凸平直线非稳腔，将凸面镜和增益介质热透镜效应等效为望远镜系统进行分析。
The optical aberration difference between the biconvex Fresenl lens and the plane-convex Fresenl lens was investigated by designing a large aperture Fresenl lens.
通过一个大尺寸菲涅尔透镜的设计，比较了曲面菲涅尔透镜和平面菲涅尔透镜在光学像差方面的差异。
Applying this method to the lens design, the lens' wavelength and weight corresponds to spectral response features of the output signal in the detector's focal plane.
将该方法应用于实际物镜设计，发现光学系统波长及权重符合探测器焦平面输出信号光谱响应特性。
Research results show that the relative aperture of optical lens, the incline and defocusing of reflection plane in TV seeker optical system reduce the intensity of the "cat's eye" reflection.
研究结果表明：回波强度受导引头光路中光学镜头的相对孔径、摄像管靶面倾斜和离焦的影响较大；扫描激光光束的入射角等因素对回波强度也有一定的影响。
With regard to image center, pixels′ distribution on image plane is still symmetrical even under the influence of lens distortion.
其中直接光学方法根据因镜头畸变造成的像素点在像面水平和垂直两个方向上分布的对称性得到图像中心；
Chromatic aberration: a lens fault in which different coloured lights do NOT converge on the same plane causing a blur image.
色差：透镜缺点之一。不同颜色的光线不能集中在同一平面上，造成模糊影像。
The measuring system of laser plane is introduced, which is based on cylindrical lens, and use PSD and respective software and hardware to receive the signal.
介绍了一种可用于精密平面测量的新方法，以柱面透镜产生的激光平面作为基准平面，凭借激光平面的稳定性进行系统的精密测量。
Infrared lens is one of important components of photoelectricity radar which is the key equipment responsible for infrared following up and surveying targets in a fighter plane.
红外透镜是决定战斗机中负责目标红外跟踪及探测的关键机载设备光电雷达的红外性能的重要部件。
Thermal imaging systems based on uncooled focal plane array detectors require their optical lens with a large relative aperture.
基于非致冷焦平面阵列探测器的热成像系统，要求光学系统具有足够大的相对孔径。
Volume holographic grating, used as a volume holographic imaging lens in the imaging system, is recorded via illuminating the recording medium with a spherical signal beam and a plane reference beam.
体全息光栅由球面信号光波和平面参考光波干涉记录，并以原信号光作为探测光波进行成像。
A piano-convex cylinder lens is utilized to convert the laser beam to plane, to forms a stripe on the welding works. Two frames of stripe image are captured by the cameras synchronously.
它采用安装在机器人末端的两台摄像机和一只激光器构成测量系统，激光器发出的光束经平凸柱面镜变成光平面，在焊件上形成条纹。
Camera extension: the length of bellows in a process camera. It is the distance between the lens diaphragm and the image plane.
暗箱：制版照相机上可以伸缩的部份，它连接起镜头和影像平面。
This sensor featuring plane-convex lens collimator for expanding beam and coupling, and a low frequency for light pulse modulation is introduced.
利用平-凸透镜准直器作扩束耦合光学系统，采用低频斩光器实现光调制。
The astigmatism from a plane grating placed in the divergent light beam was used to compensate the astigmatism from an objective lens.
将平面光栅置于发散光中，利用平面光栅产生的像散来补偿物镜产生的像散。
To detect whether a substrate is in a focal plane of an inspection apparatus, an optical focus sensor is arranged to receive a radiation beam via an objective lens.
为了探测衬底是否处在检查设备的焦平面上，一种光学聚焦传感器被布置为通过物镜接收辐射光束。
Among the reshaping systems converting a Gaussian beam to a flattop beam, the system composed of a plane-concave and a plane-convex lens, is a relatively simple structure.
在将高斯光束整形为平顶光束的整形系统中，由两个非球面镜组成的系统是比较简单的结构形式，该系统由平凹镜和平凸镜组成。
Among the reshaping systems converting a Gaussian beam to a flattop beam, the system composed of a plane-concave and a plane-convex lens, is a relatively simple structure.
在将高斯光束整形为平顶光束的整形系统中，由两个非球面镜组成的系统是比较简单的结构形式，该系统由平凹镜和平凸镜组成。
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