[問題] Zeiss的物鏡焦距怎麼求?
想請問各位有沒有使用過Zeiss的物鏡(雖然我的是油鏡,不過應該沒有差太多)
我的物鏡(objective)工作原理如下:(不包含tube lens,因為tube length等於無限大)
http://ppt.cc/~tQ1
至於我所使用的油鏡類型Zeiss有提供,可是就是沒有提供focal length資訊(定義如上
一個網址圖片所示)
以下是我物鏡的型號資訊:
http://ppt.cc/H7yH
莫非working distance就是Focal length?
還是說要用N.A.值去推算focal length?
謝謝
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