Fiber Optics Guide Intense Light to the Target
In machine vision applications, lighting strategies based on the use of fiber optics can range from directional-front to diffuse-axial, coaxial, backlit, polarized-front, ring-bright-field and ring-dark-field illumination (see figure). Compared with other options, the fiber optic method has clear strengths and weaknesses.
Lighting strategies based on optical fiber compete with other sources, such as LEDs and fluorescent lamps, in a variety of illumination schemes. The determining factor...
Photonics Spectra, May 2004