MIROGARD®

The MIROGARD® collection of anti-reflective glass is the result of high-tech manufacturing methods and strict scientific control – from nanometer-thin layers of metal oxides to chemical and abrasion testing.

High levels of anti-reflection and UV protection

Anti-reflective excellence

The anti-reflective qualities of MIROGARD® are achieved by putting products through a comprehensive coating process in clean-room conditions. The glass is dip-coated using the sol-gel process, applying nanometer-thin metal oxide layers before they are burned in.

Perfect color rendition

MIROGARD® glass’s color-neutral characteristics give art-lovers a peerlessly rich view of exhibits, achieving the highest possible color rendering index of 100.

High UV protection

SCHOTT MIROGARD® delivers superior protection for art and museum exhibits from ultraviolet light in the 300 nm-380 nm range, with specific MIROGARD® products eliminating 99% of UV rays.

Passing the test

SCHOTT experts employ rigorous testing methods to ensure that MIROGARD® glass can survive a wide range of threats, from rough handling to chemical spills. All products go through a copper chloride/acetic acid spray test, sliding abrasion with the Taber Abraser process, the Pencil Hardness test, as well as the adhesive tape, alcohol rubbing and stylus test.
Specifications

All types of MIROGARD® glass offer superior levels of anti-reflection, transmittance, color rendering and UV protection in a range of thicknesses. Each MIROGARD® variant is suited for a specific requirement, so discover which one is right for you using the details below.

Ordinary Glass (Float Glass) MIROGARD® MIROGARD®plus MIROGARD®protect MIROGARD®Protect Ultra MIROGARD®DARO
Reflectance ρvA % ~ 8% ~ 0.9% ~ 1.1% ~ 0.9% ~ 0.9% < 1%
Transmittance τvA % ~ 91% ~ 99% ~ 98% ~ 98% ~ 98% ~ 98%
Perceived color
rendering
98 100 98 99 100 100
Mechanical protection effect low low low medium to
high
medium to
high
low to
high
Splinter protection possible
Reduced visibility of fingerprints
UV Protection
(300 nm – 380 nm)
~ 44% ~ 48% ~ 82% ~ 99% ~ 99% min 48%
max 99% *
Glass thickness 2 mm - 8 mm 2 mm 2 mm 4.4 mm 2.95 mm min 2.0 mm
3 mm 3 mm 6.4 mm
4 mm 4 mm 8.4 mm
Available sizes in mm x mm 1,000 x 1,600 1,000 x 1,600
1,220 x 1,770 1,220 x 1,770 1,220 x 1,770 1,220 x 1,770
1,220 x 885 1,220 x 885 1,220 x 885 1,220 x 885 1,220 x 885
3,180 x 1,770 3,180 x 1,770 3,180 x 1,770

* UV protection value depends on MIROGARD® version that is coated with DARO.

Anti-Reflective Properties

MIROGARD® anti-reflective glass is a float glass with optical interference properties coated on one or both sides to minimize surface reflections. A special immersion procedure is used to apply multiple metal oxide layers just nanometers thick. Reflections are reduced optically by up to 90% and the glass appears invisible. At a transmission of >98%, viewers can then focus on what’s important.



Advantages of SCHOTT MIROGARD®

  • Luminous reflectance of 0.9 %
  • Appears invisible
  • Neutral in color
  • High transmission
  • Color rendering index of Ra = 100, delivering a clear view of the art

 

Float vs anti-reflective glass

Conventional float glass has dependable but limited optical properties. At just 91% transmission, a significant amount of light is lost. The smaller share of this (approximately 1 %) is absorbed by the glass itself. The other 8 % is reflected by the glass surface. This reflection is perceived as highly inconvenient, especially in applications which require clear viewing. Surface finishing can help here.

 

Disadvantages of float glass

  • Luminous reflectance of 8 %
  • Undesirable reflections
  • Lower transmission
  • Colors appear drab
  • Displays art with unsophisticated colors 
 Floatglas Float Glass  Schott Mirogard SCHOTT MIROGARD®
 - 1% luminous reflectance of SCHOTT MIROGARD® compared to 8% luminous reflectance of regular glass.

 Tests and Cleaning

SCHOTT invests a great deal of time and effort to ensure that art lovers around the world have an uninterrupted view of their favorite pieces. The result is a high-tech, anti-reflective art glass of the highest quality with a surface that is extremely stable, easy to clean and highly resistant to abrasion.



Benefits of SCHOTT dip-coated glass

  • Burned-in surface coating
  • Highly resistant to abrasion
  • Extremely stable

 

MIROGARD® is also mechanically robust and highly resistant to chemicals, delivering durable performance in every application. Key properties include:

  • High mechanical durability proven by international standards
  • Easy handling and processing
  • Robust surface for daily cleaning cycles

 

Testing

MIROGARD® undergoes a series of rigorous tests, split into mechanical and chemical:

 

Mechanical tests

  • Tesa Test, which highlights the durability against the forces of adhesive tape being ripped from the coating.
  • Taber Abrasion Test 

Tests and Cleaning 01

 

Testing the abrasion resistance of coating with the Taber Abrasion Process

  • Pencil Hardness Test. Here MIROGARD®achieved class 9H, a significantly higher score than other anti-reflective surfaces.

 

Tests and Cleaning 03

Pencil Hardness Test to check scratch resistance

  • Cheesecloth Test.

Tests and Cleaning 04

Cheesecloth test shows the good resistance of the coating

The Cheesecloth Test is an indicator of the good resistance of the coating. It’s based on DIN ISO 9211-4 and simulates moderate abrasion. In this test, a cushion of gauze is pressed onto a coated surface with a certain force and then moved several times. The surface is then checked for damage. Competing products are 95 % worse than SCHOTT products in this test.

 

Chemical tests

  • Standardized CASS (Copper-accelerated Acid Salt Spray) test
  • NSS (Neutral Salt Spray) test, which examines the anti-corrosive coating
MIROGARD® DARO

The difference between anti-reflective picture glazing and MIROGARD® DARO can be seen immediately. This durable, anti-reflective coating with oleophobic properties, is one of the best products on the market for eliminating fingerprints and smudges on picture glazing.

 MIROGARD DARO 01 

Specifications MIROGARD®DARO:
Glass thickness 2 – 4 mm
Available sizes 990 x 1,770 mm
Luminous reflectance < 1%
Light transmission ~ 98%
Color rendering index Ra= 100
Combination with other properties possible

 

Fingerprint-free

Fingerprints have a crucial impact on the optical properties of an anti-reflective coating and are much more visible than on uncoated glass. MIROGARD® DARO eliminates these fingerprints using a combination of oleophobic and hydrophobic properties, reducing their visibility down to 10 %.

 

Easy to clean

The DARO coating is a proprietary blend of hydrophobic and oleophobic molecules that are optimized to bond with the nano-features of SCHOTT´s anti-reflective coating. Oleophobic and hydrophobic surfaces (initial water contact angle > 110°) don't allow grease and sweat from fingers to stick to the glass and any remaining residues can be removed very easily by dry wiping.

 Easy to clean01      Easy to clean02

 

Equally applied imprint on MIROGARD® DARO and anti-reflective glass (both glasses wiped dry three times)

Want to know more? Let’s talk

Whether you need more information, samples, a quote, or advice for a project, we would be delighted to talk to you.

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Man in glasses in business office on phone while working on laptop