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Letto Dark - Blueblocker glasses
Letto Dark - Blueblocker glasses
Letto Dark - Blueblocker glasses
Letto Dark - Blueblocker glasses
Letto Dark - Blueblocker glasses
Letto Dark - Blueblocker glasses
  • Download the image in the gallery viewer, Letto Dark - Blueblocker Glasses
  • Download the image in the gallery viewer, Letto Dark - Blueblocker Glasses
  • Download the image in the gallery viewer, Letto Dark - Blueblocker Glasses
  • Download the image in the gallery viewer, Letto Dark - Blueblocker Glasses
  • Download the image in the gallery viewer, Letto Dark - Blueblocker Glasses
  • Download the image in the gallery viewer, Letto Dark - Blueblocker Glasses

Letto Dark - Blueblocker glasses

Blueblocker Glasses
Normal price
79,00 €
Special price
79,00 €
Normal price
Sold out
Unit price
per
incl. VAT plus Shipping costs
  • Ultra light frame
  • Double anti-reflective & tempered lenses
  • 100% protection up to 550 nm
In stock - In 2 to 4 working days at your home

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with DHL within Germany

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Lichtblock® Letto Dark Blueblocker glasses

Maximum protection in any environment: the Lichtblock® Dark series

In today's technology-dominated world, you are exposed to more artificial light than ever before - often when you least need it.

The Dark Series is your solution for maximum light reduction, specifically designed for those moments when you can't control the lighting around you. Perfect for use in brightly lit airports, lively hotel lobbies or late night office buildings, the Dark Series offers unparalleled protection for your eyes and your sleep cycle.

Protection until
550 nm
Graph
Block
Blue light + parts of the green light spectrum
UV 400 filter
Yes
Suitable for road traffic
No

Our lenses block 100% blue and 70% green

Glass

Transparent
Blue light filter

Lichtblock®
Dark Blueblocker
100% blue light filter performance

max. 30%

100%
Sleep (protection from melatonin suppression)
Stress reduction for the eye (protection of sensitive photoreceptors)

Advantages of the Dark series

  • Maximum light reduction: Blocks 100% of blue light and 70% of the green light spectrum up to 550 nm to protect your sleep cycle and improve your sleep quality
  • Ideal for extreme lighting conditions: Especially recommended if you are in environments where bright light is prevalent and you have little control over the lighting.
  • Promotes sleep quality: Supports the natural production of melatonin by minimizing exposure to light-induced melatonin suppression.

The problem: blue light in the evening

The crucial and biggest problem with blue light after sunset is the effect it has on our nervous system. After dark, the light tricks your brain into thinking it's the wrong time of day. This interrupts your sleep cycle and can have a negative effect on your health, especially over a longer period of time. Blueblockers can help you to protect your sleep cycle and improve your sleep quality.

Difference between LEDs and fire

Lichtblock Blueblocker Graphic LED Spectrum Bluepeak

LED spectrum

We speak of blue light at a wavelength of approx. 380 to 495 nanometers (nm). This is short-wave and very high-energy light. Modern displays, LEDs and energy-saving lamps have a disproportionately high proportion of blue light. This stimulates certain photoreceptor cells and can lead to a dysregulation of your sleep-wake rhythm. This can have a negative effect on your hormones and metabolism.


Fire (candlelight)

Before we were able to turn night into day through the invention of electricity, there were only natural sources of light in the form of fire. The big and decisive difference to today's light sources is the distribution of the light spectrum. Blue and green are hardly present in candlelight, as can be seen in the graph. Furthermore, fire has no flicker effect, which can stress your nervous system. Therefore, fire usually has a calming effect.


Lichtblock Blueblocker Graphic Spectrum Fire Candlelight
With the Dark series, you can rest assured that your eyes are protected and your sleep cycle remains undisturbed - no matter where you are or how bright your surroundings are.
Manufacturer Lichtblock GmbH
Model LB-LETTO-DARK
Glass variant Dark
Scope of delivery Blueblocker glasses, glasses case, glasses cleaning cloth

Spectacle dimensions

Spectacle width: 136 mm
Glass height: 46 mm Glass width: 52 mm
Bar width: 18 mm
Temple length: 130 mm

Properties

Frame colour Black
Spectacle shape Round
Frame type Full rim
Frame material Acetate
Weight 18 g
Accessories Spectacle case, spectacle cleaning cloth

Do you have any questions?

Maybe our FAQ page will help you. If not, please send us an e-mail to support@lichtblock.shop.

Customer Reviews

Based on 65 reviews
97%
(63)
0%
(0)
2%
(1)
0%
(0)
2%
(1)
A
A. Bontos
Super quality

The glasses are nice and light and fit very well, making them comfortable to wear. The intensity of the lenses is also very good. Definitely recommended

N
Noel
Top

Top

H
Heiko
Highly recommended

Helps us to fall asleep in the evening, as the blue light from the smartphone/PC/TV is blocked/dimmed.

J
J.K.
Very satisfied

The glasses are very good for my eyes in the evening and I have the feeling that I can relax more quickly. I may soon buy another pair of glasses with red lenses. I can recommend the glasses to others.

J
Julia Gebendorfer
Clear buy recommendation

I love the Blueblocker glasses. I bought them for working on my laptop. I actually wear glasses (short-sighted), but I don't usually wear glasses at my desk, which is why I opted for the Blueblocker glasses (instead of clip-ons). However, I'm now so impressed with the effect that I really want a Lichtblock for everyday wear away from my desk (i.e. when I'm wearing my normal glasses) and will therefore soon be buying matching clip-ons for my glasses. Some customers might be interested to know that it took me a few days to feel comfortable with the Blueblocker glasses. At first, it was very unusual for me and I almost had the feeling that I was getting a headache. However, as you have a very long right of return, I didn't stress myself and simply tested the glasses gradually in the evening for a few days. The initial unfamiliarity disappeared after a few days and turned into enthusiasm. Now I don't even want to look at screens in the evening without wearing the glasses :-)