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![LED OPTICS: Efficient LED collimators have simple design ...](https://www.iarticlesnet.com/pub/img/site/s_21.jpeg)
LED OPTICS: Efficient LED collimators have simple design ...
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日期:2024-08-12
2012年6月5日 - The third surface is a spherical section near the LED designed to pass rays into the lens at normal incidence to the surface. The fourth is a ......看更多