If you may not have realized, an anti-reflective coating is nowadays used in various applications. I'm sure you've even used some albeit unconsciously.
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In this chapter, I want us to look at these various applications and find out whether or not you can relate to some of them.
Let's get down;
If you've ever worked on a computer for long hours, probably you've at the very least experienced blurred vision and eye strain. These among others are known as computer vision syndrome.
However, nowadays we have anti-glare computer glasses that allow you to obtain the most comfortable vision and prevent the eye strain.
These glasses are relatively different from the typical eyeglasses. They help in optimizing your eyesight when looking at your computer screen for long.
They have often placed within a range of 20-26 inches away from the eyes of the users. This range is what experts regard as the intermediate zone of vision.
It simply implies that the distance is closer to the driving vision and comparatively far away than the reading vision.
Many computer users often tend to suffer from blurred vision when working on computers without the anti-glare glasses.
Photo Credits: EYE DOCTOR
Worse still; the users also on most occasions attempt to for the blurred vision by leaning towards the computer screen.
So it becomes double trouble for you. However, the glasses provide long-term solution to this particular problem.
We wear eyeglasses for different reasons. But above all improving vision would be the main reason for putting it on.
Ironically, you'd be wearing the eyeglasses, but instead of enhancing your vision it gets distorted. And that is where the anti-reflective coating becomes handy.
Nowadays, you do not necessarily have to worry about less light passing through your glasses hence hindering your vision.
Several interventions including integration of the anti-reflective coatings have become phenomenal and effective.
Photo Credits: COOLWINKS
Most manufacturers understand the quintessence of this problem. Therefore, they ensure that they produce glasses that can suit different anti-reflection materials that fit an individual needs.
The good thing again is that anti-reflective coating for glass can also be applied even after purchasing the lens.
The world is changing and so is technology. These days, virtually all mobile manufacturers produce smartphones.
These handsets are operated via a touchscreen unlike the previous models that were using keypads.
In fact, the next generation of youth already anticipates most devices to have touchscreen interfaces.
Photo Credits: OPTITUNE
But manufacturers have come up with anti-reflective coatings for touch screen as a means of providing safety and better vision when using such screens.
It simply involves the application of a particular layer of film to the surface of the cover lens. In turn, this film decreases reflection by canceling the wavelength of light.
These coatings enhance the user-experience when operating the device making it easy for you to obtain best results.
This is the other area where AR coating is again commonly used. In fact, it's not only the solar cells alone that nowadays carry anti-reflective coating.
The AR coating can however also be used on the glass surface that is always apparent on the solar panels.
Photo Credits: MITSUBUSHI ELECTRIC
The essence of the AR coatings on solar panels is merely to enhance the transmittance of light. This subsequently improves the overall effectiveness of the PV module.
Additionally, this coating also reduces the glare from the glass. It thus allows the solar panel to blend with the surrounding easily.
Again, these panels can easily be installed in airports given that they do not have the reflective elements that would probably blind the pilots.
Most of the TV screens, including the LCDs, LEDs, and plasmas have glassy screens designed to enhance the appearance of the picture.
Nonetheless, if you place your TV in a conservatory or somewhat bright room, it'll be able to display the reflections emanating from windows, indoor lighting, sun and even doors.
The result is that it somehow makes it difficult to watch TV especially during the day or when the lighting on in the room.
But AR coating for TV screen has made it ideal as it helps to eliminate more than 90% of the reflection without necessarily interfering with the quality of your TV picture.
It is a good idea given that TV is often a considerable investment and this coating helps in maintaining its life for as long as you own it.
Windshields are essential components, especially on planes and automobiles. AR coatings are applied to the windscreen since they assist in reducing glare and double images.
Anti-glare coating for windshield ' Photo Credit: QUORA
Double images are more of a concern in windshield because they tend to form several layers that can easily destruct the driver.
Most manufacturers often produce the windshield while bearing in mind the concern about light reflection.
For that matter, applying the AR coating on the windshield surfaces has become integral as it significantly improves vision especially when driving at night.
It is also helpful when driving in an excessively lit area since the coating decreases invisibility.
AR coatings are nowadays used in various types of high-end wrist watches. In fact, it is very rare to find most of these types of watches without this kind of coating.
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Wath with/without anti-reflective coating
These coatings are essential in the watches because they help in blocking most of the unwanted reflection.
The AR coatings block the colors in a systematic manner such that the eyes do not get irritated by the common reflection shades emanating from the surrounding.
This coating in most of the high-end wrist watches is applied on both the outside and the inside surfaces.
Other than giving these watches enhanced appearance and patency, they also improve their lifespan. The coatings also help to protect the surface from scratching.
Telescopes and cameras are the other areas where AR coatings are commonly used these days. It is expected that the images produced by these optical elements to be of high quality.
However, this is only possible if the stray light is eliminated from getting to the lenses of these devices.
And expectedly, researchers nowadays go for telescopes that have AR coating in most of the planetary centers.
These kinds of lenses do not cause reflection of lights. This coating can also reduce the glint hence preferable.
ARC is again used in microelectronic photolithography. They help in decreasing the possibility of image distortion related to the reflections that generally occur off the surface of the substrate.
What typically happens during this process is that varied types of anti-reflective coatings are applied either before or even after photoresist.
This is essential in reducing the thin film interference, the standing waves as well as the specular reflections.
In short, AR coating technology plays a pivotal role in most optical devices. It is actually for these unlimited applications of anti-reflective coating that the manufacturers work to improve their performance.
When you order prescription glasses, you'll make some additional choices regarding upgrades and options. The purpose of most lens upgrades are self-explanatory, but selecting an anti-reflective (AR) coating isn't always an easy choice to make due to the variety.
In this post, I'll provide you the insights you need regarding your anti-reflective coating options so you can make an informed decision. There are differences in price, function and features, so we'll look at those here.
At the most basic level, all AR coatings defuse light reflections on the front and back surface of the lens. The coatings allow more light to pass through and improve your visual acuity.
Reducing reflections is especially helpful in situations where you have a light source directly hitting your lenses, such as with computer use and night driving.
AR coating improves the sharpness and clarity of your vision by defusing light reflections on your lenses. (Image Source)
With an AR coating, light hitting the front surface of the lens can pass through instead of bouncing off. Having the back of the lens coated prevents light that's shining behind you from bouncing off the back of the lens and back into your eye. Having a dual surface coating provides crisp, clear vision in all light conditions.
Standard AR coating would be just fine for everyone if reflections were the only issue. However, the reality is there are many more elements coming in contact with your lenses than just light.
Premium coatings, such as those developed by Crizal, are comprised of unique formulas which:
Premium AR coatings go above and beyond simply reducing reflections.
A standard AR coating is typically comprised of two layers:
Premium AR coatings have multiple layers, such as:
Here's a deeper dive on each type:
Standard AR coatings, though they can do a good job of reducing reflections, still have a noticeable greenish hue. Premium AR, like the Crizal Sapphire, has advanced to the point where the AR layer itself is virtually colorless. The coating not only diminishes reflections on your lens, but also eliminates the greenish light flares that can be present on standard AR coatings.
Thanks to a protective layer called the SR booster, premium AR coatings are significantly better at resisting scratches from the trials of day-to-day wear and tear compared to standard AR coatings. Kids, in particular, benefit greatly from the improved scratch resistance on premium AR coatings.
The hydrophobic layer repels water, makes the lenses easier to clean and also helps prevent fogging. This is a great feature for people that are regularly exposed to winter elements such as rain and snow.
As much as we try, we end up touching our glasses many times throughout the day and in the process we leave fingerprints and smudges behind. An advanced oleophobic layer on premium AR coatings makes it easy to wipe away oils from fingerprints and eyelashes.
When cleaning lenses with a standard AR coating, rubbing a cloth against the lens creates a static charge that attracts dust particles. Crizal has solved this problem by creating an anti-static property which reverses the static charge every time you wipe your lenses with a microfiber cleaning cloth.
Crizal was the first AR manufacturer to include UV protection across their entire AR coating line. Their advanced UV protection ensures UV light bounces off the front surface of the lens but allows it to pass through the back surface.
Overexposure to short wavelength blue light (380-500nm) has been clinically linked to sleep disorders. With the average adult spending over 10 hours a day on digital devices, Crizal Prevencia is a premium AR coating which limits the amount of harmful blue light reaching the eye by 20%.
Keep in mind that Prevencia has a purple hue, which is quite noticeable compared to Avance and Sapphire. It is suggested that Prevencia be used primarily on computer glasses.
Thanks to the advanced multi-layer application process, premium AR coatings have a longer lifespan than standard AR coatings.
If you're looking for the best in class protection, clearest field of view and the most durable coating, Crizal Sapphire (+$129) is the best option.
For blue light protection and durability during those long hours on the computer, Crizal Prevencia (+$159) is the coating for you.
If you're looking for a great value, Crizal Alize (+$79) comes with hydrophobic, oleophobic and UV protection at a great price.
If you're simply looking to reduce reflections on your lens and you don't mind the extra maintenance, the standard AR (+$29) could be just what you need.
EZContacts Crizal Lineup. Compare the benefits. (Image source)
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