Key Personnel: Ch Exec/Dir: John W. Smith, Chief Engineer: Colin B. Bathe

Description: Manufactures rotating electromechanical choppers and lock-in amplifiers. Also offers a custom design service for these products. Supplies DPSS lasers, laser eyewear, optical crystals, precision optics, wideband IR sources, pyroelectric IR sensors, UV sensors and calibration systems, fiberoptic test products, tuning fork optical choppers, and resonant optical scanners.