ams OSRAM TMD2636 IR Proximity Detection Module features advanced proximity measurement and incorporates a 940nm IR VCSEL. The module is housed in a tiny (1.0mm x 2.0mm) and extremely thin (0.35mm) optical land grid array. It’s factory calibrated for IR proximity response. The proximity detection feature provides object detection (e.g. close proximity) by photodiode detection of reflected IR energy sourced by the integrated VCSEL emitter.