Guernsey Coating Laboratories Inc. (GCL)

For over fifteen years, Guernsey Coating Laboratories, Inc. (GCL) has provided superior quality optical thin-film coatings and unsurpassed customer service. With both a complete line of standard coatings, as well as custom coating designs, we are able to meet the specific needs of our clients applications. Our coatings cover the wavelength range from the ultraviolet to the near infrared.

With optimized coating designs, and stringent handling and cleaning procedures, we have achieved our goal of being able to provide our clientele with the highest performance optical coatings possible coupled with some of the lowest defect densities available in the industry. In short, we strive to treat your optics the way your company would while they are in our care.