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首页> 外文会议>Sixth International Conference on Solid State Lighting >Color Temperature Tunable White Light LED System
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Color Temperature Tunable White Light LED System

机译：色温可调白光LED系统

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摘要

Efficient white light LED systems with continuously tunable color temperature (CT) over a range of 3000 K to 6500 K are reviewed. Typically, white light sources have a fixed CT and color rendering index (CRI). White light with user-specified color temperatures is currently generated by solid-state systems with red green blue ("R/G/B"), red green blue amber ("R/G/B/A"), and warm white cool white ("WW/CW") LED combinations, but their performance is suboptimal for architectural lighting applications. We propose and discuss an LED module with a combination of warm white, green and blue ("WW/G/B") LEDs. In this scenario, the white LEDs have fixed intensity, while the blue and green LED intensities are adjusted to shift the LED module chromaticity along the blackbody locus. We also propose and discuss an LED module with a combination of red, green, blue, and cool white ("R/G/B/CW") LEDs. The white LEDs still have a fixed intensity, while the intensities of the red, green, and blue LEDs are again adjusted to shift the LED module chromaticity along the blackbody locus. The white LEDs ensure that an improved CRI is maintained in comparison to a simple "R/G/B" solution.
机译：审查了在3000 K至6500 K范围内具有连续可调色温（CT）的高效白光LED系统。通常，白光源具有固定的CT和显色指数（CRI）。固态系统目前会产生具有用户指定色温的白光，这些固态系统具有红色绿色蓝色（“ R / G / B”），红色绿色蓝色琥珀色（“ R / G / B / A”）和温暖的白色冷光白色（“ WW / CW”）LED组合，但其性能对于建筑照明应用而言并非最佳。我们提出并讨论一种结合了暖白，绿和蓝（“ WW / G / B”）LED的LED模块。在这种情况下，白色LED具有固定的强度，而蓝色和绿色LED的强度被调整为沿黑体轨迹移动LED模块的色度。我们还提议并讨论一种结合了红色，绿色，蓝色和冷白色（“ R / G / B / CW”）LED的LED模块。白色LED的强度仍然固定，而红色，绿色和蓝色LED的强度再次进行调整，以使LED模块的色度沿黑体轨迹移动。与简单的“ R / G / B”解决方案相比，白色LED确保了改善的CRI。

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