Osram latest Dragon 850nm LED 3.5x more radiant
The infra-red LED which emits at a wavelength of 850 nm is claimed to be the best compromise between suppressed visibility for the human eye and maximum spectral sensitivity for CCD and CMOS cameras.
The latest device is best suited to applications with limited board space that require narrow radiation characteristics such as camera-based vision systems for the industrial and security markets It can also be employed in passenger monitoring systems for vehicles and blind spot detection systems in the automotive industry.
The integrated lens concentrates the emitted infrared light within a viewing angle of +/-20° typically achieving an intensity of 650 mW/sr at a DC current of 1 A. The SFH 4236 is claimed to be unique in that it does not require a complex, expensive external lens assembly to obtain a narrow beam angle.
Harry Feltges, Marketing Manager Infrared Devices at OSRAM commented “Designed with automotive applications in mind, the total height of the new SFH 4236 is about 35% smaller compared to conventional DRAGON solutions with an external lens”.
The 850 nm IR DRAGON series consists of the standard version SFH 4232, the stack version SFH 4235 with twice the total radiant flux and the new SFH 4236.
