There are many reasons to prefer IR long-range power delivery over the alternatives, such as RF.  You’ll find that IR is superior in power, distance, efficiency and safety.

Here is a comparison of a few key parameters:

InfraredRF
PowerUp to several wattsSmall number of Miliwatts
Power over distance rangeConstant power regardless at distancePower significantly diminishes with increasing distance
Energy efficiencyPoint-to-point delivery. 100% of transmitted energy reaches receiverWidespread delivery. Only a small portion reaches the receiver. Remaining energy baths the environment
SafetyUL, FDA and IEC approval. Point-to-point energy transmission does not leak to the environmentRegulatory approval currently available only for micro-power systems. Environment bathed in unwanted RF radiation.
InterferenceNo RF radiation. Does not impact cellular, WiFi, Bluetooth or other communication networksPotentially interferes with Wi-Fi, cordless and cellular communications
Type of energyNatural light. Approx 50% of the sun’s energy is IR. All living forms are accustomed to itMan-made radiation.
Public demonstrationsPhone charging and many other smart devices with significant power requirementsMostly dim LEDs at short distances

We covered many of these differences in a recent Webinar. See it here

Want to learn more? Contact us for a white paper analyzing the differences in greater detail.