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field lens 1.【物理學】向場(透)鏡。2.(顯微鏡等的)物鏡。

field magnet

To reduce the marking distortion , using the vertical 2 - dimension galvanometer distributing and f field lens focalize , the distance of the second galvanometer to the machining plane is the focus f . to avoid too hign temperature to distroy the resonance cavity because of too long marking time , cooling system and self - protector is used in the design 為減少打標畸變,采用垂直二維振鏡分布, f物鏡聚焦,將激光束經第二個振鏡反射后到加工平面的距離為焦距f ,為了避免打標時間過長,溫度過高破壞諧振腔,在設計中加上冷卻系統和自我保護裝置。

Image coordinate and galvanometer pendular angle are kept in the computer according to the f9 field lens characteristic , enter pupil excursion and f6 characteristic error are ignored , that the image of laser scanning point move acceding to unlinearity relation is deduced theoretically . for deducing the distortion , error compensation is considered in the software 像點坐標與振鏡擺角按f物鏡特性的線性關系存儲在計算機,在忽略了入瞳漂移和f特性誤差后,從理論上推導出二維垂直振鏡分布中激光束掃描點的像點按照復雜的非線性關系運動,為了減少幾何畸變,在軟件設計中給出誤差補償。

Beam expander and field lens : quadruple beam expansion , biplate structure design , totally enclosed optical system , no lens pollution and without replacement 擴束鏡及場鏡: 4倍擴束,雙片結構設計,全封閉的光學系統,鏡片無污染,不用更換。

Powermate ? is a technically universal solution , using a positive field lens to redirect field rays 是一個在技術上普遍適用的解決辦法,用積極的實地鏡頭轉場射線。

Single field lens 單場透鏡

Saddle - field lens 鞍形場透鏡

Then the scratches and spots on the field lens would be visible at the eye lens . 此時場鏡上的劃痕和小點會在接目鏡中看見。