16 Sep 2011 • Ideal for gimbal windows and sensor detector assemblies on unmanned systems
Deposition Sciences, Inc. (DSI®), manufacturer of durable thin film optical coatings, announces the design of a wide-angle broadband anti-reflection (BBAR) coating for gimbal windows and detector assemblies. The highly specialized coatings address the needs of unmanned aircraft systems (UAS) for a highly durable, angle-insensitive (FOV 0-30 degrees) glare- reducing coating on sapphire substrates. The design is band-selective, such that minimum reflectance can be tuned to a particular detector package, while still minimizing visibility (glare) in the photopic spectral sensitivity range of the human eye. The design delivers an average reflectance of approximately 2 percent between 400-5000 nm.
Consistent with the harsh operating environments of UAS, the new wide-angle BBAR coatings are environmentally stable and perform to MIL-C-48497 and MIL-F-48616 standards. Testing is performed on the coated windows according to specifications for humidity, salt-fog, abrasion, temperature cycle, adhesion, solubility, and cleanability. In addition, DSI‘s in-house testing facility ensures that cryogenic and operating temperature measurements can be made between 10-400 Kelvin.
For more information on DSI’s durable wide angle, broadband anti-reflective optical coatings and test and measurement capabilities for military and defense applications, please visit www.depsci.com.
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