Rød kveldslys — blått lys-fri lampe for bedre søvn
Your bedroom lamp may be the single biggest saboteur of your søvn. Standard LEDs — including "warm white" — contain blue wavelengths that suppress melatonin even at low brightness. This lamp emits pure 620–630nm red light. Zero blue, zero green. Your body reads it as evening, not midday. Melatonin builds uninterrupted from the moment you switch it on.
💡 The problem with your current bedroom lighting
Evening exposure to blue and green light (400–550nm) suppresses melatonin — the hormone that drives sleep onset. Even at low brightness, any white or warm-white LED contains these wavelengths. The effects are well-documented:
- Melatonin suppression of up to 85% — from a standard bedside lamp, even dimmed
- Delayed sleep onset by 1–2 hours — consistently shown in research on evening light exposure
- Poorer sleep architecture — less deep sleep, even when total sleep time doesn't change
- Increased alertness at bedtime — your brain receives a clear "daytime" signal and responds accordingly
This lamp blocks 100% of those wavelengths. What remains is 620–630nm red — a wavelength that your sirkadisk system doesn't register as a wake signal. The science is consistent on this point: red light in the evening has essentially no effect on melatonin production.
- Zero blue light (380–500nm) — melatonin production continues normally
- Zero green light (500–550nm) — full circadian protection
- Red light doesn't reduce melatonin regardless of brightness or duration
- Safe for children — red light is gentle on developing sirkadisk systems
What this lamp does for your evenings
Søvn protected
Zero blue light — melatonin builds from the moment you switch it on, right through to when you close your eyes
Safe for the whole family
Flicker-free red light is safe for children's bedrooms — barn are more sensitive to blue light than adults
18-hour battery
Full evenings of use before you need to recharge — charges fully in 2–3 hours via USB
Touch control
Three brightness levels (30%, 70%, 100%) — tap to cycle between them without fumbling for switches in the dark
Adjustable stem
Flexible positioning for the nattbord, desk, or anywhere you need focused red light in the room
Flicker-free
No perceptible flicker — comfortable for extended evening use without eye fatigue
⚙️ Technical features
- 620–630nm red output: Pure red wavelength — completely outside the 380–550nm range that suppresses melatonin
- 100% blue and green block: Not reduced — entirely absent from the output spectrum
- Flicker-free LEDs: No perceptible flicker — comfortable for kveldlesing and extended use
- Up to 200 lumen: Sufficient for comfortable reading and room illumination across all three brightness levels
- Touch control: Single tap cycles through 30% / 70% / 100% brightness
- 1800mAh rechargeable battery: Up to 18 hours use — no disposable batteries
- USB charging: Standard USB cable, 2–3 hour full charge
- Adjustable stem: Flexible neck for precise positioning — nattbord, desk, bedside shelf
- Portable design: 120×120×450mm, lightweight — travels well for hotell stays and hyttetur
- 30,000-hour LED lifespan: Effectively permanent under normal use
Where this lamp makes a difference
🛏️ Bedside reading
Read late without suppressing melatonin — the most common reason people buy this lamp
🍼 Night feeds and baby checks
Soft red glow for nighttime parenting without the wakefulness hit of white light on either parent or child
👨👩👧 Family evenings
Replace the overhead light in living rooms and bedrooms with red light 1–2 hours before bed for the whole family's søvn
🏕️ Camping and hyttetur
Rechargeable battery and USB charging means this works anywhere — maintain your søvnrutine away from home
🌙 Night navigation
Gentle red glow for getting up in the night without full wakefulness — pairs well with a motion sensor for hallways
💼 Home office wind-down
Switch from desk work to red light as the transition into evening — signals to your body that the day is ending
🇳🇴 Why this matters especially in Norway
Norwegian vintere mean it's dark by 3pm and you're under artificial light for up to 14 hours before sleep. If your bedroom and living room lamps contain blue wavelengths throughout that window — even at low brightness — you're sending a persistent daytime signal to your sirkadisk system. Switching to rød kveldslys is one of the most direct ways to protect your melatonin production through the mørketid. Dominic's guide to indoor lighting in Norway covers why this matters more here than most places in the world.
For a comprehensive home setup, this lamp pairs with the Family Sleep Pack, which includes E27 amber and red bulbs, a motion sensor night light, and a clip-on reading light — everything needed for a fully blått lys-fri evening environment.
📐 Specifications
| Wavelength | 620–630nm (pure red) |
| Blue/green block | 100% of 380–550nm |
| Power | 3W |
| Brightness | Up to 200 lumen (3 levels: 30% / 70% / 100%) |
| Battery | 3.7V 1800mAh rechargeable lithium |
| Battery life | Up to 18 hours (brightness-dependent) |
| Charge time | 2–3 hours via USB |
| Control | Touch — single tap cycles brightness levels |
| Flicker | Flicker-free |
| Dimensions | 120×120×450mm |
| LED lifespan | 30,000 hours |
| Warranty | 1 year |
📦 What's in the box
- 1× Blue light blocking lamp (620–630nm red)
- USB charging cable
- User guide
- 1-year warranty
- FREE sleep optimisation guide by email after purchase
🌙 Build a complete søvnvennlig light environment
This lamp handles your bedroom and living spaces. Pair it with the rest for a full circadian-friendly home:
Further reading
Dominic's guide to indoor lighting in Norway explains what good evening light looks like in practice and why the standard Norwegian home's LED setup works against sleep through the mørketid. For the broader picture of how light and seasons interact here, the summer vs winter light strategy post is worth reading alongside it.
From Dominic
I use this lamp every single evening. Not because it's some dramatic biohack — because it requires zero effort and the logic is simple: if I'm going to be in a lit room in the hours before sleep, the light shouldn't be telling my brain it's the middle of the day. Walking through Norwegian homes in vinter, you see bright white LEDs in every room. They look normal. But your biology doesn't agree, especially not at 9pm when your melatonin should be building. A rød kveldslys is one of the smallest changes I recommend and consistently one of the first things people notice making a difference. I have had customers with søvnproblemer for years tell me this was the starting point that changed everything else.
📧 admin@lighttherapy.no · 📞 +47 951 47 478 (Text only)
❓ Vanlige spørsmål / Common questions
Why choose red light over a warm white lamp?
Even warm white LEDs (2700K) contain blue wavelengths that suppress melatonin. Red light (620–630nm) sits completely outside the wavelengths that trigger the circadian wake signal. Melatonin continues building normally through your evening, regardless of how long the lamp is on.
Hva er en blått lys-fri lampe og trenger jeg en?
A blått lys-fri lampe emits only red wavelengths — blocking all blue and green light (380–550nm) that would otherwise suppress melatonin. If you spend time in lit rooms after dark, particularly during Norwegian vintere, a blue-free lamp is one of the most direct ways to protect your søvnkvalitet.
How long does the battery last?
Up to 18 hours on a full charge, depending on brightness setting. Full charge takes 2–3 hours via USB. Most people charge it a couple of times per week.
Er det trygt å bruke ved siden av barn?
Yes. Flicker-free red light at 620–630nm does not suppress melatonin and is safe for children's rooms. Children are more sensitive to blue light than adults — the sirkadisk benefit is actually greater for them.
Can I use this for reading?
Yes. The adjustable stem and three brightness levels allow comfortable kveldlesing. For dedicated book reading, the clip-on leselys clips directly onto the page and provides more targeted illumination if needed.
Hvorfor er denne lampen spesielt viktig om vinteren i Norge?
Norwegian vintere mean it's dark by 3pm and you're under artificial light for 12–14 hours before sleep. If your bedroom and living room lights contain blue wavelengths throughout that window, you're sending a persistent daytime signal to your sirkadisk system. Switching to rød kveldslys removes that signal across the entire evening.
Is this portable enough for travel?
Yes. At 120×120×450mm with an 18-hour rechargeable battery, it travels well in luggage. Many customers use it specifically in hotel rooms to avoid the harsh white LED ceiling lights that disrupt sleep in unfamiliar environments.
🚚 Free Shipping
Orders over 3000 kr in Norway
🛡️ 30-Day Returns
Full refund, no questions
✓ 1-Year Warranty
Quality construction
🇳🇴 Norwegian Support
From Dominic in Drammen
Switch on the right light tonight
Melatonin builds or it doesn't — based almost entirely on the light your eyes receive in the evening. A rød kveldslys is the simplest way to make sure yours does.
Note: Eliminating blue light is one important part of good søvnhygiene. For best results, combine this lamp with consistent sleep timing and reducing screen use in the hours before bed. Individual responses to light vary.