In July 2009, Mitsubishi Electric launched a 638nm LD that offers 300 milliwatts (mW) output power, high brightness and pure red tone. The new LD offers an even higher output power of 500 mW, currently the world's highest in 638 nm band, which helps achieve high-luminous projectors of up to 60 lumens (lm). By comparison, LED-based projectors typically offer only about 10 lm. In addition, the new LD has an industry-leading electrical conversion ratio of 32% at 500 mW, and at a case temperature of 25 degrees C, which help to reduce power consumption in pico projectors.
The ML520G72 can also be operated at a temperature range of -5 to 40 degrees C when emitting 500 mW continuous waves (CW), and up to 50 degrees C under pulse operation at a duty ratio of 25% or less and frequency of 50Hz or higher.
The company will start sampling the new laser diode on February 1.