Guild Optical Associates is a widely recognized industry leader in the manufacturing of sapphire windows and sapphire lenses. We set ourselves apart from other optics providers by doing our own manufacturing in house using high purity, optical grade raw sapphire. We also pride our attentive customer service. The results are some of the best performing precision sapphire optics in the world. Guild Optics 25,000 sq. ft. production facility allows us to manufacture precision sapphire windows up to 18 inches in diameter and spherical sapphire lenses as small as 10mm. Small custom jobs and long range production runs are completely within Guild Optics' capabilities. Our products include: Sapphire Windows Sapphire Lenses - Convex, Concave, or Meniscus Sapphire Step Windows Custom Shaped Sapphire Windows Custom Optical Components Sapphire Domes Material Capabilities Include: Sapphire, BK-7, Fused Silica, Quartz, and Optical Glass