What is the difference between red light and white light analysis?
The 3005 has the ability to analyze surfaces using either red light or white light. This gives the customer the maximum versatility for measuring a variety of surfaces with the system. Red light or Monochromatic Light is very fast and useful for measuring smooth, continuous surfaces. A single wavelength of light is more coherent and causes interference over a wider range so that fringes will appear over the entire area being analyzed. The fringe pattern looks very similar to a topographical map of the surface. Red light analysis assumes that every fringe is ½ a wavelength above or below the adjacent fringe. Because of this, it is not able to accurately analyze rough surfaces or surfaces with sudden changes in height greater than ¼ of a wavelength. White Light shows only a few Red Light shows continuous fringes fringes that scan down the across the surface. (AC3000 image surface. of single fiber connector.). Most multifiber connectors have a rough surface and need to be analyzed with wh
The 3005 has the ability to analyze surfaces using either red light or white light. This gives the customer the maximum versatility for the system. Red light or Monochromatic Light is very fast and useful for measuring smooth, continuous surfaces. A single wavelength of light is more coherent and causes interference over a wider range so that fringes will appear over the entire area being analyzed. Red light analysis assumes that every fringe is a wavelength above or below the adjacent fringe. It is not able to analyze rough surfaces or surfaces with sudden changes in height. Most multifiber connectors have a very rough surface and need to be analyzed with white light. White light or broadband analysis has lower coherence and provides an interference pattern with just a few fringes visible on the surface to be measured. With white light, the objective lens is moved so that the fringes shift or scan down from the top to the bottom of the surface – appearing and disappearing depending on
