Built by Someone Who Needed It First

After years of struggling with sleep and mood due to extreme night-owl biology, Lucas Tang set out to build what didn’t exist. Together with Jamie Zeitzer of Stanford Sleep Sciences and Medicine, he transformed personal experience into clinically grounded, wearable light therapy.
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Our Story

The Origin of Lumos
2017

The Decision

For most of his life, Lucas felt out of sync. While the world woke up early, he came alive late.

Always tired. Always trying to catch up.

Eventually, he found out why, his biology was wired differently. An extreme night owl in a world built for mornings.So he tried everything.

Routines. Supplements. Light therapy. Discipline. Some things helped for a while.

Nothing truly worked. And over time, the exhaustion turned into something heavier. Not from lack of effort, but from the lack of something that actually worked.

After a year building products at Apple, Lucas had seen what good design could do.

In 2017, he stopped searching for a solution, and decided to build one.

Pre-launch years

2018

Stealth & Reinvention

The idea was simple.
The path wasn’t.

Creating wearable light therapy took more than design, it took curiosity, patience, and a willingness to start over. In 2018, Lucas stepped away from the noise. No launches. No headlines. Just quiet, relentless experimentation.He studied how our bodies respond to light. Built prototypes. Broke them. Rebuilt them. Again and again.

Then something clicked.

What if light didn’t need a device, what if the lens itself became the experience? By the end of that year, he made it real: a way to turn ordinary lenses into something that could work with the body, not against it. That breakthrough became the foundation of Lumos, and one of its core patents.

2019

Alignment

It looked like ordinary glasses.
It felt like them too.

But it carried years of quiet work inside.When Lucas shared it with Dr. Jamie Zeitzer, the response was immediate. With decades of experience in circadian science, he saw what this really was not a gadget, but a new way to deliver light as medicine.

He didn’t just support it. He joined. From that moment on, science and engineering moved forward together.