How Do I Know If My Glasses Have Blue Light Filter

(10 minute read)

Blueish light glasses with the right kind of lenses tin can be a great aid in improving your sleep at night. To get a pair that really will work, it is important to choose a pair that filters out the nearly melatonin-disturbing low-cal.

In this commodity, you volition acquire how to test blue calorie-free glasses and estimator glasses. It volition give you a simple way to tell if you lot have the best blueish light estimator spectacles and if they work as intended.

Why use a blue light spectacles exam?

To test blue low-cal spectacles, you lot have to learn some of the basics of the melatonin disturbance zone and perform a simple blue low-cal test.

There are some quick and like shooting fish in a barrel at-home tests to use to tell if your glasses have complete blue light protection. Everything gathered in this article is to help you effectively manage exposure to blue light.

Blue light glasses blue blocking filter test

The best blue light glasses for sleep have orangish lenses, combining the best blue low-cal filtration performance and clarity.

Blueish light glasses – the different kinds of bluish light blocking lenses

In that location are many blue light filter lens colors, which makes it essential to understand the unlike performance and clarity these will offer and when they are suitable to use.

With colors ranging from articulate transparent lenses all the way to deep red, here is a summary for each choice and typical use instance.

Computer spectacles – clear lenses

As the name suggests, these glasses are made to be used when working on your computer or smartphone or while watching TV.

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

The best reckoner glasses filter 25–30% of all blueish light.

Best blue light computer glasses by thl sleep

Get your pair of premium computer spectacles in our Amazon.com store hither.

Night driving glasses – Yellow lenses

Yellowish blueish light filter lenses are suitable to be used when driving at night.

Compared to the clear lenses, these are good at removing more of the highest energy blue light, around 440 nm, but are still clear enough to hands distinguish traffic lights and for driving at dark.

With more than and more than cars coming out with LED light applied science, this type of blue light spectacles is highly recommended for driving at night.

These generally cake around 65–70% of blueish light when benchmarked with a blue light test.

This ways that this color lens fails to block out the blue light that affects your slumber hormone the near (460–480 nm).

Blue light spectacles for better sleep – Orangish lenses

The best blue light glasses for slumber have orangish lenses. A well-balanced lens for sleep filters out 100% of the most melatonin-disturbing light and is like shooting fish in a barrel to see through.

Blue light spectrum chart with blue light hazard and melatonin regulation

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

Premium orange lenses for sleep block 99.v–99.9% of all blue low-cal as well every bit a large corporeality of the dark-green low-cal spectrum, from 495 to 550 nm.

Blue low-cal blocking glasses for sleep – Ruby lenses

Red lenses are frequently marketed to be better for sleep comeback than orangish lenses.

The issue with these deep dark red lenses is that they are hard to see through for negligible improvements for sleep compared to orange lenses.

They take a chance putting unnecessary strain on your eyes, comparable with using sunglasses indoors, so your eyes have to work hard to run into anything. Near of the extra light these filter out are in the condom yellow, orange, and ruddy spectrum.

Ruddy lenses can filter out the aforementioned amount of blueish light every bit orange lenses, mostly around 99.5–99.9%.

How to test bluish light calculator glasses (Clear lenses)

1.Get the official bluish light spectrum study information

To find out if a brand'due south blueish light glasses are the best computer spectacles yous can get, you take to get some numbers from the companies' blue low-cal filtering test data.

Premium blue cut lenses that filter out the recommended 30% of all blue low-cal and include anti-reflective coatings are costly to manufacture. This means that any computer glasses cheaper than US$40 likely lack these essential features.

So, brand sure to buy yours from a reputable make that can supply detailed lens data or a consummate lens study.

2.Perform the blueish sky reckoner spectacles bluish light filter test

Information technology is equally easy as information technology sounds. Simply await for a clear twenty-four hours and hold your glasses towards the bluish sky.

During normal wear, the lenses wait clear, only they really have a slight yellowish tint if filtering the recommended 30% of bluish light. The filtration is by and large at the offset of the blue lite spectrum, which is too called blue-violet low-cal.

When looking through the lenses towards a clear blueish sky, you can more easily see this light beingness filtered away past the lenses. As seen in the picture below, a slight xanthous tint will announced with the all-time computer glasses.

Blue sky computer glasses test

How to examination blue light glasses for better sleep

Every bit for the best estimator glasses, you tin quickly run into the departure in operation with an easy blue light glasses exam.

The best blue light blocking glasses for sleep from thl sleep

You tin can find two easy at-dwelling house blue light filter tests below to tell if your glasses cake all blue light.

For better sleep, the entire blue lite spectrum must be filtered out.

1.Go the official blueish lite spectrum report data

As you know by now, you should ask the brand for exact lens information as a first footstep before any lens testing starts.

In this way, you tin can salve money by verifying the performance before you identify an order.

ii.RGB color wheel blue light glasses test

The following test indicates how good your spectacles are at filtering out blue and green light.

Put on your blue light–blocking glasses.
Look at the nautical chart and see how close to black the blue circle (B) becomes.
For a proficient test consequence, the blue circle should become dark gray, and the cyan color blends in with the green circumvolve.

RGB Color Wheel Blue Light Glasses Test

three.Blackness and bluish circle test for blue light glasses

Put on your blue calorie-free–blocking glasses.
Await at the picture and report the color of the bluish portion.
For a adept result, the blue circle in the middle should look dark grayness when looking through your bluish light–filtering lenses.

Black and Blue Circle Test for Blue Light Glasses

How bluish light glasses are tested professionally

The tests constitute above are swell ways to tell if your bluish light spectacles work as intended. They are really useful to see if nigh blue light is filtered out.

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

An essential part of how this type 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 exam.

With this understanding, information technology is easy to run into that a handheld visible spectrometer tin't give accurate spectral analysis examination results. Whatsoever measurement taken using a non-standardized light source, such every bit a laptop screen or other random light source, can't be trusted.

False marketing for blue light glasses with hand held visible spectrometer

Whatsoever claims of how much green lite is filtered out using this non-scientific method via charts or alive demonstrations is merely imitation marketing. In this case, the result is totally dependent on the light source with its colors and effulgence.

Summary

As you can see in this commodity, it is easy to run into how effective your blueish light–filtering glasses are at blocking out blue low-cal.

When it comes to the light-green lite filter functioning, the only way to get a reliable result is to exam with a lab-grade visible spectrometer using a standardized total-spectrum low-cal source.

To get a pair of premium blue light–blocking spectacles for sleep adult with science, pick up a pair of THL Sleep blue calorie-free glasses today.

S hare with the links below to help others meliorate their sleep naturally.

Happy Deep Sleep,

Oskar Eriksson, M.Sc.
The Sleep Engineer™