Working with high-stability materials such as glass, Zerodur and silica, Optical Surfaces Ltd. is today recognised as a premier supplier of high precision reference flats by many leading research ...

Optical Surfaces Ltd. has produced a 600mm diameter mounted reference flat mirror that will enable Thales (www.thalesgroup.com) to perform the alignment of the laser beam expanders implemented in the ...

Two parallel optical surfaces often exhibit colorful fringes along the lines of equal thickness because of the interference of light. This simple phenomenon allows one to observe subwavelength ...

Most surface metrology needs can be met by one of three complementary tools - the white light interferometer, the atomic force microscope and the stylus profilometer. Quantitative measurement of ...

Due to their stable design, Fizeau interferometers are used to determine the topography of surfaces such as, e.g., plane surfaces. PTB has now developed a method which makes it possible to analyze ...