Nova Kids Blue Light Blocking Glasses

NOVA

Kids' acetate frame. Same verified lenses, sized for them.

Kids get more evening screen time than any generation before them, and their eyes are still developing. The Nova is our children's frame: lightweight acetate sized for smaller faces, with the same lab-verified lens tiers as every adult frame — verified by Micro-Light Optics, measured on camera by The Blue Light Diet author Bobby Hunt, curves published on this page.

CALIBRATED, NOT JUST TINTED

A colored lens isn't automatically a calibrated one. Every EMR-TEK lens tier is optically calibrated to a published blocking range and verified two ways: on a spectrometer by an independent lab, Micro-Light Optics Co., Ltd., and on video by Bobby Hunt, author of The Blue Light Diet, measuring our lenses on his own UPRtek spectrometer. The lab's reports and Bobby's footage are both on this page. One verified standard across the line — the kids' frame included.

EVERY SPEC PUBLISHED

Clear blocks 30% of blue light. Yellow blocks 90%, with 94.4% measured at the 450nm blue peak. Orange blocks 98% across 400–520nm. Red blocks 99.6% of blue and green across 400–570nm. Four lens tiers matched to time of day, each with its own published blocking range — check the number, then check the curve.

50,000+ CUSTOMERS · 40+ COUNTRIES

Worn daily by practitioners, biohackers, sleep optimizers, everyday screen users — and their kids. Backed by our 30-day return and 1-year warranty.

Why evening light matters

Your body runs on a light schedule — and so does your child's. Bright, blue-rich light in the morning tells the brain it's daytime: cortisol rises, alertness follows. Darkness after sunset tells it night has arrived: melatonin rises, and sleep follows. That rhythm worked automatically for most of human history, because the only light after dark was fire.

Screens and LED lighting changed that. Blue light in the evening is read by melanopsin, a photoreceptor in the eye, as a daytime signal — and the research here is consistent: blue-rich light at night suppresses melatonin. It's one of the best-established findings in circadian science, it happens at ordinary screen brightness, and it happens every night there's a device on after sunset. Tablets at bedtime, homework on a laptop, cartoons after dinner — an evening rhythm today's kids run through every night.

Four lenses, built around their day

The goal isn't to block blue light. It's to get the right light at the right time. That's why there are four tiers instead of one:

• Clear (Daytime) — Blocks 30% of blue light. No color distortion. For daytime screen use. Natural blue light during the day is part of a healthy rhythm, so daytime protection is a lighter touch by design.
• Yellow (Screen hours) — Blocks 90% of blue light, with 94.4% measured at the 450nm blue peak. For long stretches on tablets, laptops, and homework under artificial light.
• Orange (Nighttime) — Blocks 98% of blue light across 400–520nm. For after sunset, when they still need to see properly — dinner, board games, the last episode.
• Red (Nighttime, maximum) — Blocks 99.6% of blue and green across 400–570nm. For the last stretch before bed. The strictest tier, and the one with the most color shift.

Green light suppresses melatonin the same way blue does, which is why the red lens blocks all the way to 570nm — the blue and the green, not just part of it. Here's a test your kid will actually enjoy: put the red lens on at night and look at a green traffic light. It disappears completely. That's the 570nm cutoff working.

Put the night lenses on at sunset, not at bedtime — melatonin doesn't switch on instantly, and the earlier the evening signal is protected, the better the rhythm holds. One timing note that applies to kids just as much as adults: skip the strong tiers in the morning. Morning light is what sets the internal clock, and it's the reason the clear lens blocks 30% rather than 90%.

Check the graphs, then watch the test

Every lens tier was tested by Micro-Light Optics Co., Ltd., and the transmission data is on this page two ways: the lab's professional reports for verification, and our animated graphs for your understanding.

[Watch the Test]

Verified on camera by Bobby Hunt, author of The Blue Light Diet

Built to survive childhood

Lightweight, durable acetate sized for smaller faces — and built to handle being dropped, sat on, and stuffed into backpacks. Lens [X × Xmm], bridge [Xmm], temple [Xmm]. Covered by our 1-year warranty and 30-day returns. FCC, RoHS and CE certified.

Lens options

Plain ($99.99). [Confirm which lens tiers and prescription options are offered on the kids' frame.]

Frequently Asked Questions

Which lens does my kid wear, and when?

Same logic as the adult frames, matched to the clock. Clear or yellow for daytime screen use — homework, tablets, gaming under artificial light. Orange or red after sunset, with red as the strictest option for the last stretch before bed. Put the night lenses on at sunset rather than at bedtime — the earlier the evening signal is protected, the better the rhythm holds. If you're starting with one pair, yellow is the most versatile: daytime-friendly, with real evening protection.

Are these real blocking lenses or just tinted plastic?

The Nova uses the same calibrated lens tiers as every adult frame we make, tested by an independent lab, Micro-Light Optics Co., Ltd., on a spectrometer, with the transmission data published on this page. You can also watch a measurement happen — the Watch the Test button plays video of Bobby Hunt, author of The Blue Light Diet, running our lenses on his own UPRtek spectrometer. And there's a test your kid can run themselves: in the red lens at night, green traffic lights disappear completely.

Is this a medical product?

No. These are passive optical filters — tinted lenses with verified blocking ranges. They're a general-wellness product, not a medical device, and they're not intended to diagnose, treat, cure or prevent any condition. What they do is simple and physical: block specific wavelengths of light from reaching the eye, in the amounts printed on this page.

How fast do they ship, and what about customs?

US orders ship in 1–2 business days, and you can expect the glasses to arrive within 9–10 business days of ordering. Free shipping over $99. International orders ship with duties and taxes prepaid to the US, Canada, UK, EU and Australia — no surprise customs bill at your door.

What if they don't fit or my kid won't wear them?

Send them back within 30 days for a full refund — no restocking fees. If it's a tier issue rather than a fit issue, email support before shipping back and we'll handle the exchange directly, so you're not paying return shipping twice. 30-day return, 1-year warranty, FCC / RoHS / CE certified.