In imaging optics, a field lens is a positive-powered lens or group of lenses that comes after the objective lens and before the image plane or the eyepiece, serving to change the size of the image [1] [2] or to provide image-space telecentricity.

平场聚焦镜，也称场镜、f-theta聚焦镜，是一种专业的透镜系统，目的是将激光束在整个打标平面内形成均匀大小的聚焦光斑，是激光打标机的最重要配件之一。 那我们为什么不能用普通的单片聚焦镜用于激光打标呢？ 这是…

2023年7月4日 · F-Theta lens是一种特殊的透镜，常用于激光扫描系统和激光切割、雕刻等应用中。 它的设计目标是在扫描过程中保持平坦的扫描线，并提供恒定的扫描角度与焦点位置之间的关系。

If in an imaging system a lens is used to increase the field of view, that lens is called a field lens. That term does not imply any special form of lens, but only refers to its function. We first consider a Keplerian telescope, which consists of two lenses: an objective and an ocular (eyepiece).

2024年9月23日 · Field lenses are a basic element in optical design. To understand their role in an optical system, it’s important to first understand the definitions of the field of view.

Curvature of field in optical microscopy is an aberration that is familiar to most experienced microscopists. This artifact is the natural result of using lenses that have curved surfaces. When visible light is focused through a curved lens, the image plane produced by the lens will be curved as illustrated in Figure 1.

Field lens images aperture stop onto detector. Citation: M. Riedl, Optical Design Fundamentals for Infrared Systems, Second Edition , SPIE Press, Bellingham, WA (2001).

1. 概述 2. 成像方法Imaging = Synthesis + Capture 1.Synthesis（图形学上）合成 ①光栅化 ②光线追踪 2.Capture（捕捉） 3. 相机3.1 小孔成像小孔成像是针孔camera的成像原理相机的各个部位快门（Shutter）传感…

2021年6月30日 · The field lens is a convex lens designed to conjugate ALTAIR to the ground level, rather than at high altitude. The overall benefit of this re-conjugation of the system is to provide better Strehl and sharper image quality at large distances from the guide star, essentially reducing the anisoplanatism of the system.

2016年6月18日 · field lens 英 [fi:ld lenz] 美 [fild lɛnz] n. 物镜 双语例句 1 This time another optical device, the field lens came to the rescue. 这个时候另一个光学器件，外地镜头来抢救。 2 Use magnetic field lens again, two kinds of electron lens elaborate respectively below form …