True alternative to HPS contributing to the realization of a sustainable society

An HPS color LED is an LED that genuinely reproduces the emission color of High Pressure Sodium lamps (HPS), which is most often used for road lighting and outdoor lighting around the world. As a true alternative technology to mercury-containing HPS, it will contribute to the realization of a mercury-free society and carbon neutrality.

In street and outdoor lighting, the use of LEDs has been increasing over the past decade or so due to their high efficiency and long life; however, in residential areas and the center of town, there are cases where the switch to LEDs is not being made because there is a concern that the bluish white light of LEDs may change the familiar landscape and atmosphere.

In some extreme cases, street lights that were once converted to LED have been changed back to HPS due to demands from residents. In addition, attention has been drawn to so-called "light pollution", such as sleep disturbance due to excessive glare, inability to see the stars because of the dim night skies, and adverse effects not only on humans but also on the ecosystem including insects.

Nichia's HPS color LEDs can significantly change this situation. While they have the same emission color delivered by HPS, HPS color LEDs would not change the landscape and atmosphere. In addition, it reduces the light pollution caused by the higher CCT LEDs. Thus, it can be expected to accelerate the smooth shift to LEDs in cases where the switch to LEDs have not progressed due to the emission color.