菱鏡系統 导航菜单
望遠鏡
望遠鏡單眼相機對焦光學全內反射
菱鏡系統是由數個平面反射鏡所組成的鏡片組，因其不同的用途有不同的設計。
望遠鏡的菱鏡系統通常用於把倒立的像轉成正立的像，單眼相機的菱鏡系統則可以把入射的光線分開，以用於對焦、取景、測距等用途，並且在用於取景時成正立的像。
一般來說，菱鏡系統的成像原理，是利用光學中的「全內反射現象」，這種反射不會造成光線能量的損失，能使儀器達到最佳效果。一個複雜菱鏡系統的光學原理，實際上由多個平面反射鏡的作用而形成的。
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