Your body needs light.
We weren’t built for dim rooms and glowing screens.
For most of human history, sunlight guided every heartbeat, every breath, every rhythm of our lives. But modern life has dimmed that connection — offices, apartments, and phones have replaced the sky.
We now spend about 90% of our time indoors, under light that’s too weak by day and too bright at night.
This loss is quiet but profound. When you feel tired at noon and wide awake at midnight — when winter weighs heavy and summer feels like relief — that’s your body calling out for light.
Millions of Americans — and hundreds of millions more around the world — suffer because they simply don’t get enough. It doesn’t have to be this way.
Rhythm exists to bring sunlight back into human life. We build sunlight generators — powerful, precise instruments that recreate the full strength and spectrum of
the sun. Our mission is simple: to ensure every person sustainably receives the light they need to feel happy, healthy, and well.
When you live in light that truly nourishes you, everything changes.
Why we exist.
If we’re being honest, we don’t want you to use our product.
Seriously.
If you want to feel better, go outside.
Let the sun warm your face.
Breathe.
Touch the earth.
It’s the most natural way to feel better - and it’s free.
But we also know that not everyone gets that chance.
Maybe you’re stuck at work sunrise to sunset.
Maybe it’s a dark and gray winter.
Maybe you’re just too tired to go out.
We get it.
That’s why Rhythm exists — to reconnect people with real, nourishing light their bodies and minds were designed to thrive on.
Go outside whenever you can.
For all the times you can’t, Rhythm is here for you.
Who we are.
Rhythm was founded by Harrison Lin—a mechanical engineer, product design, and sculptor who began this work during the long, dark months of the pandemic.
During this time, he felt the heaviness, the disconnection, the slow fading of energy and joy. To feel better, he build his first prototype.
It wasn’t perfect, but it worked.
From that beginning grew a team of designers and engineers united by a simple belief:
Light is not just something we see, but something we feel.
Rhythm builds sunlight generators—machines that bring real, nourishing light back into human life. Our work exists to help people feel connected again.
