field lens

基本解释

The effect of field lens in infrared optical systems is discussed.
讨论了红外光学系统中场镜的作用。
Use magnetic field lens again, two kinds of electron lens elaborate respectively below form and principle.
又用磁场透镜，下面分别阐述两种电子透镜的构成和原理。
The particular functions and the impact to the systemic performance of the critical elements such as lighting system, grating, field lens and electronic ocular are analyzed.
对系统的关键性部件如照明系统、光栅、物镜和电子目镜的选用以及它们对系统性能的影响进行了分析。

"We wanted to place a bet, and have a lens into this field, " says Brad Crawford , Amgen's director of licensing.
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The wide-angle lens give allows expanded field of view needed for group shots, ensuring everyone is in frame even in a close-up shot whilst the powerful zoom makes it possible to capture detailed photos even when the subjects are of a distance.
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