Over 30 Years in the Industry Guernsey Coating Laboratories, Inc., is an optical coating company specializing in quality thin-films covering the wavelength range from ultraviolet to the near infrared. The longevity of GCL's staff (average tenure is 25 years), has led to a solid trust between GCL and our clients.
GCL focuses on details. Each substrate is accounted for, both in-coming and out-going, inspected and reviewed per customers' blueprint. Each is hand cleaned, evaluated and documented. Each run is registered for traceability and logged for future inquiries. It is of the utmost importance to keep the lines of communication open, working together to overcome challenges and find solutions.