How To Tell If Glasses Have Blue Light Filter

(10 minute read)

Blue light glasses with the correct kind of lenses can exist a great help in improving your sleep at night. To get a pair that really will work, it is important to cull a pair that filters out the most melatonin-disturbing light.

In this article, you will learn how to examination blue low-cal glasses and computer spectacles. It will requite you a uncomplicated way to tell if you have the best bluish lite reckoner glasses and if they work every bit intended.

Why use a blue light glasses test?

To exam blue calorie-free spectacles, you have to larn some of the basics of the melatonin disturbance zone and perform a simple blue light test.

At that place are some quick and piece of cake at-abode tests to use to tell if your glasses have consummate blue light protection. Everything gathered in this article is to assist you effectively manage exposure to blue calorie-free.

Blue light glasses blue blocking filter test

The best bluish lite glasses for sleep have orange lenses, combining the best bluish light filtration performance and clarity.

Blue calorie-free spectacles – the different kinds of blue low-cal blocking lenses

At that place are many blueish light filter lens colors, which makes it essential to empathise the different performance and clarity these will offer and when they are suitable to use.

With colors ranging from clear transparent lenses all the style to deep red, hither is a summary for each option and typical use instance.

Computer glasses – articulate lenses

As the name suggests, these glasses are fabricated to be used when working on your figurer or smartphone or while watching Goggle box.

Their purpose is relieving your eyes from digital eye strain and filtering out light rays at the start of the blue low-cal spectrum.

The best estimator spectacles filter 25–30% of all blue light.

Best blue light computer glasses by thl sleep

Get your pair of premium computer spectacles in our Amazon.com shop here.

Dark driving glasses – Xanthous lenses

Yellow blueish light filter lenses are suitable to exist used when driving at night.

Compared to the clear lenses, these are good at removing more of the highest energy blue calorie-free, effectually 440 nm, just are still clear enough to easily distinguish traffic lights and for driving at night.

With more and more cars coming out with LED light technology, this type of blue calorie-free glasses is highly recommended for driving at night.

These more often than not cake around 65–70% of blue lite when benchmarked with a blue light test.

This ways that this color lens fails to block out the blueish light that affects your sleep hormone the most (460–480 nm).

Blue light spectacles for improve slumber – Orangish lenses

The all-time blue low-cal glasses for sleep have orangish lenses. A well-counterbalanced lens for sleep filters out 100% of the most melatonin-agonizing light and is easy to see through.

Blue light spectrum chart with blue light hazard and melatonin regulation

Compared to yellow lenses, orange lenses are slightly darker, making them unsuitable for driving.

Premium orange lenses for slumber block 99.v–99.ix% of all blueish light as well as a large corporeality of the green light spectrum, from 495 to 550 nm.

Blueish calorie-free blocking glasses for sleep – Red lenses

Red lenses are often marketed to be ameliorate for sleep comeback than orange lenses.

The consequence with these deep dark scarlet lenses is that they are difficult to see through for negligible improvements for slumber compared to orange lenses.

They chance putting unnecessary strain on your eyes, comparable with using sunglasses indoors, so your optics have to work hard to see anything. Most of the extra light these filter out are in the safety yellow, orange, and red spectrum.

Red lenses can filter out the same corporeality of blue low-cal as orange lenses, generally around 99.v–99.9%.

How to test blue light computer glasses (Clear lenses)

one.Go the official blue low-cal spectrum written report data

To find out if a brand'south blue calorie-free spectacles are the best calculator spectacles you tin can get, you have to go some numbers from the companies' blue light filtering test information.

Premium blue cutting lenses that filter out the recommended 30% of all blueish calorie-free and include anti-reflective coatings are costly to manufacture. This means that whatever calculator glasses cheaper than US$40 likely lack these essential features.

So, make sure to buy yours from a reputable brand that tin can supply detailed lens information or a consummate lens written report.

2.Perform the blue sky figurer glasses blue light filter exam

It is equally easy equally it sounds. Just await for a articulate twenty-four hours and hold your glasses towards the blue sky.

During normal vesture, the lenses look articulate, just they really have a slight yellow tint if filtering the recommended 30% of blue light. The filtration is mostly at the commencement of the blueish light spectrum, which is as well called blue-violet light.

When looking through the lenses towards a articulate blue sky, you tin can more hands meet this light beingness filtered away by the lenses. As seen in the picture below, a slight yellow tint volition appear with the best computer glasses.

Blue sky computer glasses test

How to test blue light glasses for meliorate sleep

Equally for the best calculator glasses, you lot tin quickly see the difference in functioning with an easy blue calorie-free glasses test.

The best blue light blocking glasses for sleep from thl sleep

Yous can find two like shooting fish in a barrel at-home bluish calorie-free filter tests below to tell if your spectacles block all blue light.

For amend sleep, the unabridged blueish lite spectrum must be filtered out.

1.Go the official bluish low-cal spectrum study information

Every bit you know by at present, you should ask the brand for verbal lens data equally a starting time step before whatever lens testing starts.

In this style, you can save money past verifying the performance before y'all identify an club.

2.RGB colour wheel bluish light spectacles test

The following test indicates how skilful your glasses are at filtering out blue and green light.

Put on your blue light–blocking glasses.
Look at the chart and encounter how close to black the blue circumvolve (B) becomes.
For a skilful test result, the blueish circle should get dark gray, and the cyan color blends in with the dark-green circle.

RGB Color Wheel Blue Light Glasses Test

3.Black and blueish circumvolve test for blue light glasses

Put on your blueish lite–blocking glasses.
Await at the picture and report the colour of the blueish portion.
For a proficient result, the blue circle in the middle should wait night gray when looking through your blue lite–filtering lenses.

Black and Blue Circle Test for Blue Light Glasses

How bluish light glasses are tested professionally

The tests establish in a higher place are great means to tell if your blue light glasses piece of work equally intended. They are really useful to meet if about blue light is filtered out.

The only way to accurately measure out how much green calorie-free a blue light blocker lens filters out is to utilise a visible spectrometer. This instrument tin can measure the exact greenish low-cal–filtering capacity with high precision.

An essential function of how this blazon of expensive laboratory instrument works is that the light used during lens testing is standardized. This means that the incoming light contains all the colors needed to perform an accurate test.

With this agreement, it is easy to come across that a handheld visible spectrometer can't requite accurate spectral analysis test results. Whatsoever measurement taken using a non-standardized light source, such as a laptop screen or other random lite source, can't be trusted.

False marketing for blue light glasses with hand held visible spectrometer

Any claims of how much green lite is filtered out using this not-scientific method via charts or live demonstrations is just faux marketing. In this case, the issue is totally dependent on the calorie-free source with its colors and brightness.

Summary

As you tin can run across in this article, information technology is like shooting fish in a barrel to see how effective your bluish light–filtering glasses are at blocking out blue light.

When information technology comes to the light-green light filter performance, the but way to get a reliable event is to examination with a lab-grade visible spectrometer using a standardized full-spectrum calorie-free source.

To become a pair of premium blue light–blocking glasses for sleep developed with science, choice up a pair of THL Slumber blueish light glasses today.

S hare with the links below to aid others ameliorate their sleep naturally.

Happy Deep Sleep,

Oskar Eriksson, G.Sc.
The Sleep Engineer™