Jack, while I have no guesstimate of the monetary value, but the market is huge.
Just looking at the Luxmux home page at the bottom gives you an idea of what sled sensing can and will apply to.
From their home page "
Luxmux is using light to change how we see the world. Imagine if everyone knew what was in the air we breathe, the food we eat, the water we drink and the medicine we take.