unfocused light 中文意思是什麼
unfocused light
解釋
未聚焦光-
The unfocused aspherical surface system is one of the main structure of large emiting system. in the system, the more large the relative aperture of primary mirror, the more small the focal length and the tube of system, and the more light the weigth
這個系統中的主反射鏡的相對孔徑越大,其焦距就越短,相應地系統筒長就越短,重量就越輕,這樣就越能滿足車載或機載系統的實戰要求。
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