Vacuum Deposited Aluminum Coatings - Surface Optics Corporation

Surface Optics has spent decades perfecting large area Vacuum Deposited Aluminum (VDA) coatings.

We offer standard, enhanced, or protected aluminum coating on your substrate. Our in-house design and measurement capabilities allow for customized VDA coatings for your substrate and application.

Aluminum

Performance	Aluminum, 400 – 1000 nm Rmin: ~ 85.0% Aluminum, 400 – 1000 nm R_max: 99.0% Aluminum, 400 – 1000 nm Rave: ~ 97.5%
Scalability	Excellent

Protected Aluminum

Performance	Protected, Al 300 -1000 nm Rmin: 79.4% Protected, Al 300 -1000 nm Rmax: 91.7% Protected, Al 300 -1000 nm Rave: 84.4% Performance is based on substrate polish. Reflectance estimates are for polished glass slide substrates.
Scalability	Excellent
Mil-Spec	Improved durability over VDA. Passes Eraser rub test per Mil-C-4849A 3.4.3.1 and adhesion per 3.4.1.1
Lead Time	Flat Substrates up to 5” approx. 2 weeks. Larger than 5” substrates development program built with your statement of work.

Enhanced Aluminum

Performance	Bare Al, 400 – 1000 nm Rmin: ~ 85.0 Enhanced Aluminum, 300-1000 nm Rmin: 82.6% Enhanced Aluminum, 300-1000 nm Rmax: 95.0% Enhanced Aluminum, 300-1000 nm Rave: 89.3% Enhanced Aluminum, 400 – 700 nm Rave: 93.8%
Lead Time	Flat Substrates up to 5” approx. 2 weeks. Larger than 5” substrates development program built with your statement of work.

UV Enhanced Aluminum

Performance	Bare Al, 400 – 1000 nm Rmin: ~ 85.0 Bare Al, 400 – 1000 nm Rmax: ~97.5% UV Enhanced Aluminum, 300 – 400 nm Rmin: 92.0% UV Enhanced Aluminum, 300 – 400 nm Rmax: 94.8% UV Enhanced Aluminum, 300 – 400 nm Rave: 96.1%
Lead Time	Flat Substrates up to 5” approx. 2 weeks. Larger than 5” substrates development program built with your statement of work.

Sample Program

THERMAL COVERS FOR NUSTAR OPTICS MODULES

The Nuclear Spectroscopy Telescope Array (NuSTAR) optics modules required a cover that provided acceptable thermal and physical properties while maintaining transparency throughout the NuSTAR band. The front surface of the cover, which points toward space, is coated with 0.08μm of Al then 1.2 μm of SiOX. The back surface, which faces the optics module, is coated with 0.08μm of Al. The combination of carrier film and coating is >97% transmissive at 6 keV for a single layer.