Telocentric lenses work with a wide depth of field. With a telocentric lens, you can image objects of different distances from the lens and the objects stay in focus.
具端着丝粒(注:我猜是类似于针孔吧)具有阔之景深,以具端着丝粒,你由不同距离之目标物成像和保持目标物在焦。
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