In summary, Vacuum Fluorescent Displays are high contrast displays that can display 7-segment numerals, multi-segment alphanumeric characters or a dot matrix pattern. They use a self-emitting fluorescent light allowing them to operate in extreme cold and hot temperatures. Vacuum Fluorescent Displays are available as glass or module type displays, are typically colored green, bright, and perform well in both dark and full sunlight environments. Optional color filters are available. Newhaven Display International Inc., offers both glass and module type VFDs in standard sizes as well as custom designs.