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    • 10. 发明授权
    • Side illumination lens for LED
    • LED侧面照明镜头
    • US08633641B2
    • 2014-01-21
    • US13280800
    • 2011-10-25
    • Ming-Te Lin
    • Ming-Te Lin
    • F21V7/09F21V5/00F21V13/04
    • G02B19/0028F21V5/04F21V7/0091F21Y2115/10G02B19/0061H01L33/58
    • A side illumination lens for a LED is disclosed. One of the embodiments includes a bottom cavity, an incident surface, four total internal reflective surfaces, and a side refractive surface. Light beam emitted by the LED enters the lens through the incident surface. A first portion of the light beam is reflected by the total internal reflection surfaces to the refractive surface and emits out of the lens. The second portion of light beam enters the lens and exits from the refractive surface. A second one of the embodiments is to roughen the side refractive surface for diffusing the exit light beams so that a broader area can be illuminated softly.
    • 公开了一种用于LED的侧面照明透镜。 实施例中的一个包括底腔,入射表面,四个全内反射表面和侧折射表面。 LED发出的光束通过入射面进入透镜。 光束的第一部分被全内反射表面反射到折射表面并从透镜中发出。 光束的第二部分进入透镜并从折射表面离开。 第二个实施例是使侧面折射表面变粗糙以扩散出射光束,从而可以轻柔地照亮更宽的区域。