"lens focal length"的相關文章
"lens focal length"的相關公司資訊
"lens focal length"的相關商品
Focal length - Wikipedia, the free encyclopedia
瀏覽:1017
日期:2024-07-16
The focal length of an optical system is a measure of how strongly the system converges or diverges light. For an optical system in air, it is the distance over which initially collimated rays are brought to a focus. A ......看更多