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发明授权
CN1917731B 校准的LED光模块 失效 - 权利终止 转让

校准的LED光模块
摘要：
本发明公开了一种光源和用于制造光源的方法。光源包括安装在衬底上的多个LED和用于测量来自LED的光。每一个LED发出具有与其它LED不同光谱的光，来自那个LED的光的平均强度由耦合到那个LED的驱动信号确定。传感器产生多个信号，每一个信号由与LED中的对应的一个LED发出的光的强度成比例的传感器值表征。控制器产生驱动信号，并且存储用于每一个LED的当前目标值。产生用于每一个LED的驱动信号，使得用于那个LED的传感器值匹配用于那个LED所存储的当前目标值。
摘要（英）：

A light source and method for making the same are disclosed. The light source includes a plurality of LEDs mounted on a substrate and a sensor for measuring light from the LEDs. Each LED emits light having a different spectrum from the other LEDs, the average intensity of light from that LED being determined by a drive signal coupled to that LED. The sensor generates a plurality of signals, each signal being characterized by a sensor value that is proportional to the intensity of light emitted by a corresponding one of the LEDs. A controller generates the drive signals and stores a current target value for each LED. The drive signals for each of the LEDs is generated such that the sensor value for that LED matches the stored current target value for that LED.

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