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    • 8. 发明授权
    • Apparatus and method for improved illumination area fill
    • 改善照明区域填充的装置和方法
    • US07581855B2
    • 2009-09-01
    • US12210183
    • 2008-09-13
    • Ronald G. HolderGreg Rhoads
    • Ronald G. HolderGreg Rhoads
    • F21V7/00
    • G02B19/0061F21K9/233F21V7/0091F21V7/04F21V7/09F21V13/04F21Y2115/10G02B19/0028H01L33/58H01L33/60
    • A reflector for a light source, such as an LED, is provided with a shape which efficiently collects and directs energy to an illumined surface whereby almost 100% of the light is collected and distributed into a designer composite beam. The shape in one embodiment is comprised of three zones beginning with a parabolic surface of revolution at the base of the reflector, followed by a transition or straight conic zone and ending with an elliptical zone. In another embodiment the reflector shape is determined according to a transfer function which allows for arbitrary designer control of the reflected rays at each point on the reflector, which when combined with direct radiation from the source, results in a designer controlled composite beam or illumination. The device is more than 90% energy efficient and allows replacement of higher power, less energy efficient light sources with no loss in illumination intensity.
    • 用于诸如LED的光源的反射器设置有有效地收集并将能量引导到发光表面的形状,从而几乎100%的光被收集并分布到设计者复合光束中。 一个实施例中的形状由在反射器底部的旋转抛物面开始的三个区域组成,之后是过渡或直的圆锥区域并以椭圆形区域结束。 在另一个实施例中,反射器形状根据传递函数确定,该传递函数允许任意设计者控制反射器上每个点处的反射光线,当与源的直接辐射组合时,反射光线导致设计者控制的复合光束或照明。 该器件具有超过90%的能源效率,并允许更换更高功率,更低能效的光源,而不会损失照明强度。
    • 10. 发明授权
    • LED device for wide beam generation
    • 用于宽光束发生的LED装置
    • US08414161B2
    • 2013-04-09
    • US13540477
    • 2012-07-02
    • Ronald G. HolderGreg Rhoads
    • Ronald G. HolderGreg Rhoads
    • F21V3/00F21V5/04
    • F21V5/04F21K9/00F21K9/69F21S8/085F21S8/086F21V7/0091F21V13/04F21V19/02F21V23/005F21V29/70F21V31/005F21W2131/103F21Y2105/16F21Y2115/10G02B19/0028G02B19/0061G02B19/0071G02B27/0012H01L33/58
    • An apparatus and method is characterized by providing an optical transfer function between a predetermined illuminated surface pattern, such as a street light pattern, and a predetermined energy distribution pattern of a light source, such as that from an LED. A lens is formed having a shape defined by the optical transfer function. The optical transfer function is derived by generating an energy distribution pattern using the predetermined energy distribution pattern of the light source. Then the projection of the energy distribution pattern onto the illuminated surface is generated. The projection is then compared to the predetermined illuminated surface pattern to determine if it acceptably matches. The process continues reiteratively until an acceptable match is achieved. Alternatively, the lens shape is numerically or analytically determined by a functional relationship between the shape and the predetermined illuminated surface pattern and predetermined energy distribution pattern of a light source as inputs.
    • 一种装置和方法的特征在于在诸如路灯图案的预定照明表面图案和诸如来自LED的光源的预定能量分布图案之间提供光学传递函数。 形成具有由光学传递函数限定的形状的透镜。 通过使用光源的预定能量分配图案生成能量分布图来导出光学传递函数。 然后产生能量分布图案到被照射的表面上的投影。 然后将投影与预定照明表面图案进行比较,以确定其是否可接受地匹配。 该过程重复继续,直到达到可接受的匹配。 或者,通过形状和预定照明表面图案之间的功能关系和光源的预定能量分布图案作为输入,数字地或分析地确定透镜形状。