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Electro-Optical Products Corporation - Manufactures optical modulators, choppers, shutters, scanners, galvos, and drivers. New York
Eluzions' Optical Illusions - Contains many optical illusions, illustrating a wide range of visual anomalies and surprising optical effects. A free screensaver, posters, and educational explanations are also provided.
Guild Optical Associates, Inc. - Manufacturer of custom lenses, windows, mirrors, and optics. Specializes in sapphire optics. New Hampshire.
Hana Optical - Korean manufacturer of metal eyeglass frames and sunglasses.
Hou Gine Optical Manufactory Company - Established in 1983 with a manufacturing plant in Hong Kong. Provides products with photos, company overview and contact information.
Hyun-Jin Optical Co. - Manufactures optical frames in Korea.
Illusion Works - A multimedia museum of optical and sensory illusions, with on-line demonstrations and explanations.
Jackson Optical Manufactory - Manufacturer and distributor of a variety of metal, plastic and sunglass frames for over 20 years. Includes photos of products, company profile and contact information. Site is in English, Spanish and Portugues.
Just Optical Illusions - Focus on geometric optical illusions by Gianni A. Sarcone and Marie J. Waeber
Knight Optical - Optical components custom made and designed, off the shelf components are also available.