UV Enhanced Aluminum Mirrors

Aluminum coated mirrors are cost effective and offered in a variety of sizes. Bare aluminum is extremely delicate and susceptible to damage. A protective overcoat is layered over the aluminum to make it damage resistant. Our UV Enhanced coating is made by using an overcoat of MgF2 which is transparent in the UV allowing 200-230nm R>65%; 230-250nm R>80%; 251-1200nm R>85% (Ravg>93% @400-1200nm).
Material: BK7 grade A optical glass
Dimension Tolerance: +/-0.2mm
Clear Aperture: >85% of diameter
Parallelism: < 1 arc minutes
Surface Quality: 60-40 S/D
Flatness: λ/4@632.8nm
Coating: R> 90% on S1
Bevel: 0.25mmx45deg