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Coma – Definition and Causes of Comatic Optical Aberration

Optical aberrations are deviations from geometric optics that are mainly caused by faults in optical lenses.

12 Feb 2014

Sagnac Interferometer - Definition and Applications

The Sagnac interferometer uses counter-propagating beams in a ring path. This is realized by either using multiple mirrors or with an optical fiber. Generally, three or more mirrors are used, so that the counter-propagating light beams follow a closed path such as a triangle or square.

12 Feb 2014

Gain Medium - Definition and Use in Laser Construction

Gain medium is a quantum system that amplifies laser beams by means of stimulated emission.

12 Feb 2014

Spectrograph - Definition and Use

A spectrograph is a device that separates the incident light from an object into a frequency spectrum and measures the amount of radiation at each wavelength.

12 Feb 2014

Schmidt Prism - Definition and Properties

Schmidt prism, also referred to as Schmidt–Pechan prism, is a prism that reverts an image while deviating the line of sight by 45°. It is a type of optical roof prism.

12 Feb 2014

Enhancing the Lateral Resolution of White Light Optical Profilers Using AcuityXR Technology

White light interferometry is one of the most rapid, precise and versatile surface measurement techniques available to researchers and manufacturers.

From Bruker Nano Surfaces and Metrology 27 Jan 2014

Optical 3D Metrology in Industrial Opthalmic Applications

With hundreds of millions of people choosing contacts for either visual or aesthetic reasons, and millions more having surgery to solve vision problems associated with aging, there is a growing need for high-volume manufacturing process control for ophthalmic products.

From Bruker Nano Surfaces and Metrology 27 Jan 2014