Over 30 Years in the Industry
Beginning business in 1982

Guernsey Coating Laboratories, Inc., is an optical coating company specializing in quality thin-films covering the wavelength range from ultraviolet to the near infrared.

With a complete line of standard coatings as well as custom coating designs, GCL reaches such areas as:

  • Medical
  • Aerospace
  • Defense
  • Optical Instrumentation
  • Inspection Equipment
  • Telecommunications
  • Imaging, Displays
  • Lighting & Scanning
  • Universities
  • Laser and Semiconductor fields.

GCL meets and many times exceeds Mil-Spec requirements committing to both a higher standard of performance while working with our customers to bring about a successful product.

News and Events

August 9-13
Optics and Photonics
October 13-15

Deposition Techniques and Coatings

From research and development to high volume runs, GCL's expertise covers custom design, custom tooling, evaluation and testing to final production.

Using the following techniques:

  • Resistance Source Thermal Deposition
  • Resistance Source Thermal Deposition
  • Electron Beam
  • Ion Assisted Electron Beam
  • Ion Beam Sputtering

(Note: Ion Beam Sputtering provides the advantage of the highest packing densities, giving the thin-film coating exceptional adhesion, abrasion, resistance and ruggedness).

Applications include coatings such as:

  • Broadband Anti-reflection
  • V-Coats
  • Super V-Coats
  • MgF2
  • Dielectric High Reflectors
  • Protected Aluminum
  • Enhanced Aluminum
  • Protected Silver
  • Protected Gold
  • Beam Splitters
  • Neutral Density
  • Dichroic

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