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公开(公告)号：US20090322253A1
公开(公告)日：2009-12-31
申请号：US12489193
申请日：2009-06-22
IPC分类号： H05B37/02
CPC分类号： H05B33/0842
摘要： An LED lighting system, with first and second types of LEDs of different efficacies, has a reduced-power usage mode. A control system independently controls first and second control groups of first and second types of LEDs, respectively. The control system has one or more modes including a reduced-power usage mode for decreasing the overall power consumption of the lighting system while maintaining a light level of at least a predetermined percentage of the level present when the first control group of LEDs operates at a power level between less-than-full power and full power and the second control group is off. The predetermined percentage is 50. The control system decreases the overall power consumption of the lighting system in the reduced-power usage mode by turning off or dimming the first control group and turning on the second control group to at least some extent.
摘要翻译： 具有不同功效的第一和第二类LED的LED照明系统具有降低功耗的使用模式。 控制系统分别独立地控制第一和第二类型的LED的第一和第二控制组。 控制系统具有一种或多种模式，包括用于降低照明系统的整体功耗的降低功率使用模式，同时当LED的第一控制组在一个操作时保持至少存在的电平的预定百分比的光电平 功率级别在小于满功率和满功率之间，第二控制组关闭。 预定百分比为50.控制系统通过关闭或调光第一控制组并至少在一定程度上接通第二控制组来降低照明系统在降低功率使用模式中的总体功耗。
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公开(公告)号：US20100275999A1
公开(公告)日：2010-11-04
申请号：US12773611
申请日：2010-05-04
申请人： Roger F. Buelow II
发明人： Roger F. Buelow II
IPC分类号： H01L31/00
CPC分类号： H01L31/055 , H01L31/0547 , Y02E10/52
摘要： A photovoltaic conversion assembly comprises an optical slab with first and second major surfaces and an intermediate surface therebetween. Light energy to be collected impinges as incoming photons on the first major surface. At least one PV cell is mounted to receive light energy from the intermediate surface of the optical slab and convert such light energy to electrical energy. The PV cell has a highest band gap E. A down-converting structure is located on the second major surface of the slab for converting to lower energy light received through the slab, with at least about 75 percent of the converted light having an energy level above the band gap E. A two-way spectrally selective reflector, located proximate the first major surface, cooperates with the down-converting structure for preventing high angle light from undesirably exiting the optical slab via the first major surface.
摘要翻译： 光伏转换组件包括具有第一和第二主表面的光学板坯以及它们之间的中间表面。 要收集的光能作为第一个主表面上的入射光子入射。 安装至少一个PV电池以从光学板坯的中间表面接收光能并将这种光能转换成电能。 PV电池具有最高的带隙E.下转换结构位于板的第二主表面上，用于转换成通过板坯接收的较低能量的光，其中至少约75％的转换的光具有能级 高于带隙E.位于第一主表面附近的双向光谱选择性反射器与下变换结构协作，以防止大角度光不期望地经由第一主表面离开光学板。
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