The ratio of the two photocurrents can, for example, be used to monitor the color temparture of an object.
More Information
http://www.lasercomponents.com/...
Trade Shows
Defense, Security + Sensing, 29.04. - 03.05.2013, Baltimore Convention Center, USA, Booth 1237
LASER. World of Photonics, 13.-16.05.2013, Neue Messe München, Germany, Booth B1.442
Sensor + Test, May, 14.-16., 2013, Messe Nürnberg, Nürnberg, Germany, Booth 12-609
Security + Defence, Sept., 24 - 25, 2013, Internat. Congress Center Dresden, Germany