Sharp Develops High-efficiency Red Laser Diode for Displays

Dec 26, 2012
Mami Akasaka, Tech-On!
The "GH0641FA2C" (photo courtesy of Sharp)
The "GH0641FA2C" (photo courtesy of Sharp)
[Click to enlarge image]

Sharp Corp developed a red laser diode with a waveband of 640nm and a light conversion efficiency of 33% for the light sources of displays.

As a 640nm-waveband red laser diode that operates in a single mode, it has the highest conversion efficiency in the industry. Sharp increased conversion efficiency by optimizing the combination of materials and structure. The company will release the laser diode, "GH0641FA2C," for automotive head-up displays and compact projectors.

The maximum optical output and threshold current of the diode are 150mW and 55mA (standard), respectively. With an optical output of 150mW, its operating current is 182mA (standard) and operating voltage is 2.5V (standard). Its peak oscillation wavelength is 642nm. Its beam spread angle is 9° in the horizontal direction and 17° in the vertical direction.

Sharp will start to ship samples of the laser diode Jan 31, 2013, at a price of ¥5,000 (approx US$58.7) and begin volume production March 29, 2013, at a rate of 10,000 units per month.