Okandan Glass
Okandan Cam San. Ve Tic. A.S.
http://www.okandanglass.com/

3D Scene
Illustrates most of the modeling, illumination, and rendering 3D objects. Covers Z-buffer, Shading, Phong illumination, and Ray Tracing.
http://www3.telus.net/Voiculescu/scene_3d/index.html

Custom Glass Corporation
Custom Glass Corporation offers Custom Fabricated Glass, Specialty Glass, Bent Glass, Bulletproof Glass, Silk Screened Glass, Security Glass, Transportation Glass, Bullet Resistant Glass, Safety Glass, and much more
http://www.customglass.com

NGF Canada Ltd
Manufacturer of specialised glass fibre, rubberized glass cord and glass flake. Owned by NGF (Europe), part of NSG (Japan). E-glass, K-glass and U-glass
http://www.ngfcanada.com

Fiberoptics Technology Inc.
Manufacturing standard and custom fiber optic cables, fiber optic lighting, and fiber optic illumination products for industrial, medical, and commercial industries since 1977
http://www.fiberoptix.com/

L.J. Star, Inc.
Provider of innovative and value priced illumination sources, Metaglas safety glass products, sanitary service products, visual flow indicators, sight glasses, ports and gages, and accessories.
http://www.ljstar.com/

Radiant Imaging
CCD light measurement systems, light source characterization files, optical and illumination design software, and optical and illumination engineering services.
http://www.radimg.com/

Nippon Glass Fiber
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http://www.nsg.co.jp/

Global Illumination Compendium by Philip Dutré
This page contains the Global Illumination Compendium, an effort to bring together most of the useful formulas and equations for global illumination algorithms in computer graphics.
http://www.cs.kuleuven.be/~phil/GI/

Technical Glass Products
Fire Rated Glass & Framing for architectural and industrial communities with wireless fire rated glass and narrow profile fire rated framing
http://www.fireglass.com/