Anti-reflective
glass (non-reflective glass) uses multi-layer vapor
deposition coatings on one or two sides of the glass
surface to minimize interference caused by reflections. ESI’s
anti-reflective coated glass improves usability of
displays by reducing reflections while maintaining
crisp, sharp images.
ESI anti-reflection coated glass reduces unwanted reflections and improves transmission of images over uncoated glass. The average reduction in reflectivity is from approximately 4% per surface to approximately 0.3% per surface. Therefore, for a double sided coated glass, the reduction is from 8% to 0.6% - a 13X reduction. Transmission is improved by the same factor. Clear float glass averages 92% transmission in the visible light range. A single surface coating improves the transmission to 95% and a double sided coating improves light transmitted to 98-99%.
ESI also offers its proprietary "Easy Clean" hydrophobic treatment which reduces the unwanted finger-print color shadows typical of anti-reflective coatings. It also improves the ability to clean the surface by rejecting static-borne materials and solutions. "Easy Clean" can be cleaned with all common glass or window cleaners without affecting the coatings.
- Glare and reflection reduced by 95%
- Contrast Enhancement
- Superior Durability
- Excellent Surface Quality
- Anti-reflective glass is available in multiple sizes
and thickness ranges
- Competitive Pricing
ESI Anti-Reflective Coated Glass Specifications
1.0 PURPOSE & SCOPE
This specification defines the spectral and environmental performance
requirements of a multilayer high efficiency antireflection
coating applied to glass display products.
2.0 APPLICABLE DOCUMENTS
The following documents form a part of this specification
to the extent specified herein.
MIL-C-675C Anti-Reflective Coatings of Glass Optical Elements
(Anti reflection)
MIL-C-14806 A Coating, Reflection Reducing, For Instrument
Cover Glasses and lighting wedges
8510002 "Scotch" Tape Adhesion Test
3.0 EQUIPMENT, MATERIALS, AND SUPPLIES
Rapid Scanner, or equivalent
4.0 RESPONSIBILITIES
NONE
5.0 DEFINITIONS
NONE
6.0 SPECTRAL PERFORMANCE
The spectral reflectance from the coated surface measured
at the center
of the part of 100 incident angle.
Coating Reflectance Requirements:
=0.6% R absolute from 430nm
to 65Onm, and
=0.3% R average between 0.6% R points
On curved products only the variation in coating performance
from the center of the part to any two diagonal corners shall
be =10% if the product is 15' or less in longest dimension;
or =17% if the product is greater than 15" longest dimension
as measured in absolute reflectance at the upper .6% intercept
points.
7.0 ENVIRONMENTAL AND COATING DURABILITY REQUIREMENTS
7.1 Coating Adhesion
The anti-reflective glass coating shall show no evidence of
damage when an approved tape is pressed firmly against the
coating surface and removed quickly as referenced in PARA.
4.5.12 of MIL-C-675C.
7.2 Abrasion Resistance
The anti-reflective glass coating shall show no evidence deterioration
after being subjected to a 40 rub (stroke) eraser abrasion
resistance test using a rub force of 2-2 1/2Ibs.,(reference
MIL-C675C, Para.4.5.10)
7.3 Humidity
The anti-reflective glass coating shall be subjected to continuous
exposure for 24 hours in an atmosphere of 120° F±
4° with 95 - 100% relative humidity without evidence of
deterioration (reference MIL-C-675C, Para.4.5.8)
7.4 Solubility
The anti-reflective glass coating shall show no evidence of
deterioration after being immersed for 24 hours in water containing
six ounces of Sodium Chloride per gallon ( reference MILC-675C
Para.4.5.7)
7.5 Temperature Shock
The anti-reflective glass coating shall show no evidence of deterioration
as tested per MIL-C-I4806A Para. 3.11.3. (Cycle between 160°F
- 65°F, and back: with a 4 hour soak at each temperature)
