Lens: Red · Night
L3 · Night
Red · Night
Deep red. For the last hour before sleep.
- 99.2% of blue removed, measured over 380–500 nm
- 19.8% of light let through — this is what it costs you
- Road use: Not suitable. Never for driving or cycling.
- 14-day returns · No reason needed.
- Free shipping over € 75 · A flat € 6.95 below that, EU-wide.
- Shipped today · Order before 15:00, it leaves the same day.
What it costs you99.2% of the blue light, and 82% of everything else. A red traffic light transmits 88% through this lens; a green one, 5.4%.
In plain language
This lens blocks blue and green — the whole range the melanopsin receptor responds to. At 550 nanometres it transmits 1.3%. Everything turns red.
That is the point, and it is also the warning. This lens blocks 82% of all visible light. Through it, a green traffic light and a red one look the same. It is made for a room you know, in the last hour before sleep.
It does not pass the traffic-signal requirements of EN ISO 12312-1, and we say so here rather than leaving it in a footnote.
I wear the red pair every evening. Not to test it — because the last hour of the day looks different with it on, and I have stopped wanting it any other way. — Joep
Specifications
- Blue reduction
- 99.2%, measured over 380–500 nm
- Light transmission
- 19.8% (Tv)
- Ultraviolet
- —
- Road use
- Not suitable. Never for driving or cycling.
- Frame
- Confirmed at the first production run
- Hardware
- Metal temple inlay, engraved mark on the left temple
- Standards
- EN ISO 12312-1:2022 · ANSI Z80.3 · AS/NZS 1067.1
What is in the box
The glasses, a protective case with the wordmark debossed, a cleaning cloth, and one sheet of paper: the measured curve of your batch.
Shipping & returns
Free shipping over € 75, a flat € 6.95 below that, to every country in the European Union. 14-day returns, no reason needed.
Up close
The hinge, the inlay, the mark.
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Metal temple inlay
A metal core along each temple. Which alloy, and how it is fixed, we confirm at the first production run.
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Engraved mark on the left temple
One mark, engraved, no print to wear off.
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Frame material
Confirmed at the first production run — we will not name a material we have not held.
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Frame measurements
Published here before the first pair ships.
The two figures
What this lens does to light.
This lens, and a typical one.
What we put on the page, and what a typical product page leaves out.
Blue-light figure
TypicalA percentage
99.2%, over 380–500 nm
Light you give up
TypicalNot stated
19.8% transmission
Who measured it
TypicalNot stated
Independent laboratory, per batch
Road use
TypicalNot stated
Not suitable. Never for driving or cycling.
In the box
TypicalThe glasses
The glasses, case, cloth, and the lab file for your batch
In one take.
The other two
All eyewear →
Also on the list
Shop all →
Questions?
Still curious? Write to usWhich lens do I need?
Clear for the screen during the day, yellow for the evening, red for the last hour before sleep. The red lens is not for the road.
How do you know the numbers?
Measured. An independent laboratory measures the transmission of every lens over 380–500 nm. The lab file for your batch is printed and packed in the box.
Do the frames fit one size?
One size, two colours. The frame measurements are confirmed at the first production run and published here before it goes on sale.
Can I drive with them?
Red: Not suitable. Never for driving or cycling.
Where do you ship?
Every country in the European Union. Free over € 75, a flat € 6.95 below that.
Red · Night
€ 79