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单词 field lens
释义

field lens

noun
In a multiple lens optical system, the lens farthest from the eye.A converging field lens will shorten the eye-relief (the distance from the eyelens to the exit pupil) of a telescope....
  • It also features mechanical interference in the three-element field lens.
  • But, unlike the standard geologist's field lens, this one has a camera.
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更新时间:2024/9/24 0:33:18