Green Design

IR LED With Integrated Lens

The infrared DRAGON SFH 4236 from OSRAM Opto Semiconductors (Sunnyvale, CA) is designed for applications that require narrow radiation characteristics from limited board space, namely automotive applications such as driver and passenger monitoring systems and blind spot detection systems, as well as camera-based vision systems for the industrial and security sectors.

OSRAM’s SFH 4236 IR LED achieves a typical radiant intensity of 650 mW/sr at a DC current of 1 A. The device emits at a wavelength of 850 nm and is an ideal compromise between maximum spectral sensitivity for CCD and CMOS cameras and suppressed visibility for the human eye.

The integrated lens of the SFH 4236 concentrates the emitted infrared light within a viewing angle of +/-20°, eliminating the need for a complex, expensive external lens assembly. The footprint is identical to that of the other IR DRAGON devices, and the SFH 4236 can be used as a drop-in replacement in existing designs. It exhibits the same electrical parameters as the standard IR DRAGON and is suitable for reflow soldering.

(OSRAM)