Spectrogon US Inc. - Mountain Lakes, NJDesigner and manufacturer of interference filters: narrow and broad bandpass, long- and shortwave, ND filters, atmospheric windows, AR and metallic coatings. Holographic diffraction gratings: plano, concave and blazed, pulse compression/stretcher gratings. WDM and telecom applications include diode laser tuning gratings and network communications gratings.
Vermont Photonics Technologies Corp. - Dummerston, VTUS distributor for Moeller-Wedel Optical GmbH. Optical test, metrology, and quality control equipment: ELCOMAT electronic autocollimators, GONIOMAT electronic goniometers, custom electronic autocollimators, visual autocollimators, collimators, alignment telescopes, dioptometers, spherometers, focometers, interferometers, and refractometers.