Nov 24 2010
Osram Opto Semiconductors has introduced the Stack Power TOPLED SFH4250S that emits nearly double the amount of infrared light than the standard SFH4250 device.
Stack Power TOPLED SFH4250S
The IR LED attains 22 mW/sr radiant intensity and a 70 mW total radiant flux at a driving current of 70 mA. The TOPLED SFH4250S has high radiance, which allows designing of compact lighting devices.
Osram’s stack technology has been applied on chips with a 300-µm edge length for the SFH4250S LED. The stack technology has been tested and proven in numerous applications, ranging from night vision systems to sensor modules.
The Stack Power TOPLED enables maximum-pulsed operation at 1-A pulse current and reaches a radiant intensity of 220-mW/sr and a total radiant flux of 700 mW. The new component is ideal for applications where lighting units light up large regions with IR light.
The SFH4250S’ emitted light at 850 nm is invisible to the naked eye. The light does not interfere with television remote control that typically operates at 950 nm. Numerous computer games utilize the 3-D technology and benefit from the IR emitters. The enhanced IR power can be used in vehicle safety systems, predominantly in driver monitoring systems for fatigue identification.
Source: http://www.osram-os.com/