evening (01) is a red-lens filter for the last two hours of your day. It blocks light below 550 nm: ~100% of blue, most of green. Keep watching, reading, scrolling.
Filter strength matched to the light around you. Read the spec, pick your window.
Unit 01| Lens | Deep red, tinted |
| Filters | ~100% blue + most green |
| Cutoff | 550 nm |
Unit 02| Lens | Subtle amber |
| Filters | Blue-light peak |
| Distortion | Low — colors hold |
Unit 03| Lens | Deep red, clip-on |
| Filters | Same as evening (01) |
| Fit | Clips over your frames |
The whole product in one figure: the visible spectrum, and the band evening (01) doesn't transmit. No wellness promises. A spec you can check.
Blue and green wavelengths up to 550 nm are where screens and LED lighting emit most. evening (01) is opaque to that band; warm light passes. That's the entire mechanism. What your evenings feel like with it on is yours to find out.
| Clear "blue light" lens | duskline evening (01) | |
|---|---|---|
| Blue light filtered | ~5–20%, coating only | ~100% — tinted lens, not a coating |
| Green light | None | Most, up to 550 nm |
| Visible filter | None to see | Yes. The lens is visibly red. |
| Made for | All-day wear | The last 2 hours before bed |
Put them on when the sun goes down. Keep watching, reading, scrolling. The lens filters while you do.
Everything shifts amber-red. The first ten minutes feel strange. Then the room feels like candlelight.
The glasses come off when the lights do. Same window tomorrow.
We don't make that claim. We publish a filter spec and you test what it does for your evenings. The lens blocks the wavelengths screens and LEDs emit most; the rest is your call.
No. evening (01) distorts color on purpose. It's for the couch, the book, the last episode. For daytime screen work, pick screen (01): subtle amber, low distortion.
clip (01) attaches over your existing frames. Same red lens, and it flips up when you want to look someone in the eye.
The store opens September 2026. Waitlist members get 30% off launch pricing and first access. One email, sent once.
No. This page takes your email, nothing else. You pay only if you choose to order once the store opens.
30% off launch pricing, before the store opens to everyone else. One email, sent once.
* Design specification for the Batch 01 production run: lens transmission below 550 nm ≈ 0% (opaque tinted polycarbonate), transmission above 580 nm ≈ 90%. Independent transmission measurements will be published with the launch batch. DUSKLINE products are not medical devices and make no health claims. The lens comparison demo above is a visual simulation. We store your email for one purpose: the launch notice. Reply to any email and we delete it.