Loading... Please wait...This fiber optic light bulb will work in any ramé-hart system which uses the fiber optic illuminator. The current-generation illuminator will have a "Techniquip" label on the back of the unit. For bulb installation instructions, please see this video. This bulb will also work in legacy light sources which mostly are ACE1 with Schott or Fostec label on front or rear. Bulb p/n is 100-00-FOB.