Photonics Tech Briefs
Product of the Month
July 1999

Meller Optics, Providence, RI, offers high-precision optical domes for protecting sensors and detectors from water, chemicals, moving particles, debris, and corrosive materials while extending their viewing angle. Manufactured to specifications on a 5-axis Opticam SX spherical machining center, the domes can be fabricated from sapphire, quartz, glass, ZnSe, fused silica, and silicon. The domes feature included angles to 160° and can be fabricated in sizes up to 4 in. outside diameter. They exhibit <25 microns wall thickness variation, <1 fringe/in. surface accuracy (at 633 nm), and finishes up to 20-10 scratch/dig.

About Photonics Tech Briefs This bimonthly supplement to NASA Tech Briefs provides articles and briefs on the latest innovations in photonics technology, including laser components and systems; lenses, mirrors, coatings, optical systems, imaging systems, and sensors. PTB reaches 80,000-plus buyers of lasers, optics, and imaging equipment. Products of the Month are chosen by PTB's editors for outstanding technical merit and practical value to the magazine's engineering and management readers.