Optical Surfaces Ltd has been producing optical components and systems for more than 50 years and is now accepted as one of Europe's leading manufacturers of high-precision optics. The comapny's main workshops and test facilities are deep underground in a series of tunnels excavated in solid chalk where temperature remains constant and vibration is practically non-existent. With such stable conditions testing particularly with long path lengths become quantifiable and reliable. Working with these natural advantages is a highly skilled team of craftsmen with a commitment to excellence in both product quality and customer service. Optical Surfaces ISO 9001-2015 approved manufacturing facility provides the flexible resources to supply from single specialist requirements to OEM quantities. All high precision optics are provided with a complete quality test assurance report.