Hey, that’s a great angle to tackle! From a physics standpoint, the sweet spot usually lies where you’re using broadband, low‑energy photons—like LEDs or diffuse light—rather than high‑power lasers. Those sources can hit a lot of cells without the heat or cost of a laser system. If you combine that with a smart, low‑cost sensor array, you can keep the hardware cheap while still delivering a therapeutic dose. In practice, I’d aim for a system that uses pulsed white‑light LEDs, a simple photodiode feedback loop, and some micro‑controller‑driven timing. That keeps the tech on the cutting edge, but still inexpensive enough for mass rollout. Let me know if you want the exact specs or a cost breakdown!