Hitachi wire developed luminous efficiency to the original 5 times 65lm/W red LED

Hitachi Electric has developed the AlGaInP type red light emitting diode luminous efficiency reaches 65lm/W (LED). The luminous efficiency is about 5 times higher than the company's original product, "are the highest level industry" (Hitachi cable). The peak of luminescence wavelength is near 625nm.

Hitachi will through the wire metal reflective layer (MR:metal reflector) inserted into the original AlGaInP LED light emitting layer below, which significantly higher than the original red LED 12lm/W luminous efficiency. The original approach will make a lot of light absorbed by the GaAs layer under the light-emitting layer.

The company is ready to establish mass production technology, the official business. The actual use of the product, in addition to large outdoor display screen and car brake lights, but also can be applied to a variety of display and lighting purposes.