Profile: Keystone Applied Technologies specializes in analysis, design, development, and prototyping of multi-spectral optical imaging systems for military, law enforcement & commercial applications. Our products include handheld night vision pocketscope, night vision camera kits, catadioptric lenses, electro optical situational awareness system. Our pocketscope can be used as a surveillance device, for low-level photography, or when attached to a head mount accessory, as a hands-free system for covert operations. It can also be converted into a night vision weapon sight. In our StarTon®, vacuum and immersion testing were used to refine the sealing & produce a dry nitrogen purged lens, environmentally sealed & designed & tested to withstand water immersion to a depth of 3 feet.