制造商將專(zhuān)注于LED光質(zhì)量進(jìn)一步提高市場(chǎng)份額

　　在其早期的化身，固態(tài)照明（SSL）掙扎與傳統(tǒng)照明，因?yàn)樗前嘿F的，坦率地說(shuō)，不是很光明。然而，由于制造商提高了他們的設(shè)備的輸出和效率和更好的制造技術(shù)推低價(jià)格，SSL的照明市場(chǎng)份額迅速擴(kuò)大。

　　今天的質(zhì)量，從產(chǎn)品的主要供應(yīng)商提供前所未有的光度和功效，雖然進(jìn)一步的改進(jìn)是可能的，當(dāng)代的產(chǎn)品性能，重點(diǎn)已經(jīng)轉(zhuǎn)移到提高“質(zhì)量”的LED的光。芯片制造商正在研究開(kāi)發(fā)支出美元提高顯色指數(shù)（CRI）產(chǎn)品和有限的相關(guān)色溫（CCT）與溫度和亮度方差。

　　本文介紹了如何當(dāng)代LED已經(jīng)超過(guò)傳統(tǒng)照明的功效，而價(jià)格差距大幅縮小。然后，文章解釋了制造商如何把注意力轉(zhuǎn)向光的質(zhì)量，甚至用戶(hù)控制器“顏色調(diào)整”，以進(jìn)一步提高他們的市場(chǎng)份額。

　　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 “l(fā)ight emitting” diode rather than a laser diode.