anti-reflective coating forglasswindows

To understand Corning’s Anti-Glare solution, think of trying to take a photo or read your smartphone when outside on a sunny day. Chances are, you’re instantly annoyed by seeing your own reflection instead of the image on the screen.

Antireflectiveglassfor windows

As a result, your eyes don’t perceive a sharp reflection of your own image on the surface. That way you can get past the distraction of your reflected image to visualize and focus on the content displayed on your device.

If you’re looking at Gorilla Glass with Anti-Glare treatment, though, all the light hitting the screen is still reflecting back – you just don’t notice it. That’s because of the invisible structures on the surface of the anti-glare glass. You can’t see them – they measure only a few microns -- but they are hard at work scattering incoming light in different directions.

AntiReflectiveglasssheet

Parfocal: the objective lenses are mounted on the microscope so that they can be interchanged without having to appreciably vary the focus.

Resolving power or resolution: the ability to distinguish objects that are close together.  The better the resolving power of the microscope, the closer together two objects can be and still be seen as separate.

When it comes to making glossy glass finishes easy to read in bright light, Corning scientists focus intently on what you can’t see.

The Virtual Edge by http://www.uwyo.edu/virtual_edge/ is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States License

Please take a few minutes to fill out a brief survey about your experience using the Virtual Edge: https://docs.google.com/forms/d/1yGbkF0KM92WBSk-IgS-EkjxkTKTQwhzuXmDsVpwRDoU/viewform

Antireflectiveglassprice

The thin-film application has gotten Corning in the door with customers seeking anti-reflective properties on their cover glass, but scientists are now developing a more-robust version of the anti-reflective thin-film coatings that can withstand the harsh handling of mobile devices. They’re also developing a chemical etching process to achieve a more-readable device.  This chemical etching process creates the Anti-Glare solution.

We have invested significantly in understanding glass surfaces at this microscopic level. That’s how our scientists have learned just how deep to make nanostructures to have the light-suppressing properties for the Anti-Reflective Solution – and how slightly larger structures result in the light-scattering properties of Anti-Glare.

Antiglare glasses for night driving

anti-reflectiveglasscoating spray on

The surface manipulation starts with a fresh piece of Gorilla Glass. Specialized chemistry and processes etch away microscopic bits of the glass. Exhaustive experiments and process controls have helped scientists consistently create tiny surface structures with the depth, width, and pitch to manipulate light to achieve the desired results.

Once the glass has gone through its etching, it moves on to the ion-exchange process to develop the tough, damage-resistant properties consumers have come to expect from Gorilla Glass.

Immersion Oil:  Clear, finely detailed images are achieved by contrasting the specimen with their medium.  Changing the refractive index of the specimens from their medium attains this contrast.  The refractive index is a measure of the relative velocity at which light passes through a material.  When light rays pass through the two materials (specimen and medium) that have different refractive indices, the rays change direction from a straight path by bending (refracting) at the boundary between the specimen and the medium.  Thus, this increases the image’s contrast between the specimen and the medium.

non-reflectiveglassfor framing pictures

Our innovators continue to deepen their fundamental understanding of surface engineering. Investments in advanced metrology techniques and other process controls equip the company to meet the challenge of extremely uniform production on a large scale.

One way to change the refractive index is by staining the specimen.  Another is to use immersion oil.  While we want light to refract differently between the specimen and the medium, we do not want to lose any light rays, as this would decrease the resolution of the image.  By placing immersion oil between the glass slide and the oil immersion lens (100X), the light rays at the highest magnification can be retained.  Immersion oil has the same refractive index as glass so the oil becomes part of the optics of the microscope.  Without the oil the light rays are refracted as they enter the air between the slide and the lens and the objective lens would have to be increased in diameter in order to capture them.  Using oil has the same effect as increasing the objective diameter therefore improving the resolving power of the lens.

Total magnification: In a compound microscope the total magnification is the product of the objective and ocular lenses (see figure below).  The magnification of the ocular lenses on your scope is 10X.

Miniscule structures constructed on the glass surface – so tiny that they’re visible only under a powerful microscope – are a key factor in the advanced Anti-Reflective and Anti-Glare solutions being developed for Corning® Gorilla® Glass. Each anti-glare solution has its own properties and advantages, so let’s take a look at how each solution works.

And rather than dulling out colors like some other commercial anti-reflective coatings, Corning’s solution actually enhances color fidelity for the entire visible spectrum. It’s excellent for displays with very high resolution.

The Anti-Reflective solution, introduced at display industry trade shows in early 2014, begins as a thin, inorganic film on Gorilla Glass. The proprietary thin film manipulates incoming light, causing light waves to interfere and cancel each other out. The intensity and magnitude of reflected light is reduced by about 75 percent.