Blue Block Anti-Reflective Coatings
A certain spectrum of blue light emitted by computer screens has been shown to be harmful to your eyes. Not all blue light is bad. Some blue light is necessary for proper vision. Blue block AR Coatings are specially designed anti-reflective lens coatings that reflect off the bad blue light (HEV or, High Energy Visible Blue Light) emitted by computer and tablet screens, as well as TVs and cell phones. These coatings allow beneficial blue light through to your eyes and reduces unwanted glare. They are designed to provide natural vision while protecting your eyes from harmful blue light, UV rays, and the effects of Computer Vision Syndrome (CVS). They do this to varying degrees.
- Mojo BluBlock AR - Blue light reflecting AR coating on polycarbonate lens.
- APEX BluBlock AR-T - Blue light reflecting AR coating on polycarbonate lens with the addition of a very light tint.
- KODAK TOTAL BLUE 1.6 AR and Mojo BluBlock 1.6 AR - Blue light reflecting AR coatings on a high index 1.6 lens with a special monomer built in.
You can get these coatings on lenses without magnification by selecting zero (plano) from the lens powers list, or choose reading powers from zero to +4.00 in either eye. They are also available in prescription.
Blue block AR coatings are a great choice for basic protection from blue light/HEV for most people. For people that suffer from severe blue light related issues, blue block tints offer a higher degree of blue light filtration. Learn more about our blue block tints.
See the charts below for details.
[Blue Light/HEV High Energy Visible - These percentage numbers indicate blue light/HEV filtered. They do not include blue light reflected away. We feel comfortable based on our tests, that an additional 10-20% can be added to these percentages numbers to give a truer value to overall blue light protection.]
Mojo BluBlock AR Coating - (Clear AR)
Features and Benefits:
APEX BluBlock AR-T Coating - (Clear AR + Lens Tint)
Features and Benefits:
Kodak Total Blue 1.6AR - (Clear. Hybrid AR + Lens Material)
Mojo BluBlock 1.6 AR - (Clear. Hybrid AR + Lens Material)
Features and Benefits:
Baseline for testing.
CR39 Plastic Resin.
Standard AR coating.
About these graphs.
We conducted our tests using a BPI UV/Blue Meter which provides transmission percentages at a series of points. The measured points are at 400, 430, 470, 505, and 525nm. Spectrometers cannot determine the amount of light reflected off the AR lens coating, rather they determine light transmittance through the lens.
Standard AR Coatings are designed to pull as much light through the lenses to your eyes as possible. About 20% of light gets reflected off non AR lens surfaces resulting in surface glare and reflections on the lenses. Good AR coatings reduce that loss from 20% down to about 1%. These coatings produce higher quality optics. For best optical quality, whether through eyeglass lenses, binoculars, telescopes, etc, the more light through the lens the better. But,
Blue Block AR Coatings are designed to reflect off blue light/HEV but to also pull beneficial light through. Each manufacturer has their own proprietary formula for the mineral combinations that make up the multi-layered AR coatings. These AR coatings are not as anti-reflective by nature as standard AR coatings but the cosmetic differences are barely noticeable. We do not have the equipment necessary to measure the amount of blue/HEV reflected off of AR lenses. All of the manufacturers claim at least a 20% reflection of HEV/blue light.
Blue Block Lens Materials - The Mojo BluBlock AR Coating is a blue light reflecting coating on a polycarbonate lens. The Apex BluBlock AR-T and the Kodak Total Blue lenses filter a higher percentage of blue light. The Apex BluBlock AR-T lenses are also polycarbonate but with a light tint in the lenses. The Kodak Total Blue and Mojo BluBlock 1.6 AR lenses are a special 1.6 high index lens material with a proprietary monomer built in. The combination of lens tint, monomer, and blue block AR produces different end results.
Based on other tests we have conducted (using UV laser pens and such) we can see that the blue block AR coatings do indeed reflect off more blue light than standard AR coatings. Unfortunately, these tests are not very scientific, but when we compare results from lens to lens, we can easily see the differences.
Updates- Lens manufacturers are aware of the demand for specific information about their products. As this information becomes available we will update the data on this page accordingly.
If you are light sensitive you may like our Mojo BluBlock Tint options which you can learn more about here- Blue Block Tints
Read our BluBlock Guide for help in selecting the right blue block option option for you. Or, if you want a quick answer: