制造商将专注于LED光质量进一步提高市场份额

　　制造商将专注于LED光质量进一步提高市场份额

　　在其早期的化身，固态照明（SSL）挣扎与传统照明，因为它是昂贵的，坦率地说，不是很光明。然而，由于制造商提高了他们的设备的输出和效率和更好的制造技术推低价格，SSL的照明市场份额迅速扩大。

　　今天的质量，从产品的主要供应商提供前所未有的光度和功效，虽然进一步的改进是可能的，当代的产品性能，重点已经转移到提高“质量”的LED的光。芯片制造商正在研究开发支出美元提高显色指数（CRI）产品和有限的相关色温（CCT）与温度和亮度方差。

　　本文介绍了如何当代LED已经超过传统照明的功效，而价格差距大幅缩小。然后，文章解释了制造商如何把注意力转向光的质量，甚至用户控制器“颜色调整”，以进一步提高他们的市场份额。

　　A short history of lighting LEDs

　　Many engineers are surprised to learn that the history of the LED stretches back over a century to the discovery of electroluminescence in 1907 when Briton H. J. Round of Marconi Labs experimented with a crystal of silicon carbide and a cat’s-whisker detector.

　　However， the first key discovery that led to today’s high-brightness white LEDs happened in 1962 as a by-product of Nick Holonyak Jr.’s quest to develop a laser diode. Holonyak was employed by Bell Labs and was working with semiconductor diodes comprising gallium arsenide phosphide when he observed that adding more phosphorus to the gallium arsenide material increased its band gap， shortening the wavelength of the emitted light from the infrared to the visible red. Since the light was not coherent， Holonyak’s device was a “light emitting” diode rather than a laser diode.