Provides protection and
improved durability for substrate and film surfaces.
CHC coatings will greatly
improve the durability of substrates with soft or
delicate surfaces such as:
polycarbonate, PMMA,
polysulfone, CR-39, Silicon, Germanium,
Aluminum, Gold, ...etc.
CHC coatings will also
provide protection for thin film filters.
CHC coatings can be
incorporated into DRLI thin film multilayer
designs such as high (HR) and anti-reflective (AR)
systems.
Environmental
Protection:
CHC material provides
resistance to:
- Humidity and salt fog
environments.
- Solvents (i.e.
Acetone, Propanol, Methanol, MEK and other -ketones).
- JP-Fuels
- Most Acids
Abrasion Resistance:
Baseline comparisons when
applied to CR-39 have yielded the following
results:
Taber abrasion tests were
performed per ASTM D1044 using a 500 gram weight
for 500 cycles and a # 10 grit wheel.
Uncoated
CR-39.......................30% haze
CR-39 with CHC......................1.1%
haze !
Effect on
optical performance:
The CHC thin
film hard coat can provide excellent protection with
little or no effect on optical performance.
Each CHC coating is designed to optimize optical
performance.
As shown
below, the effect on the reflectance from a CHC
coated gold sample is negligible The
reflectivity remains above 95% through 14µm..
