Abstract: An optical fiber delivery system comprising a number of first optical fibers, preferably in a bundle, and a second optical fiber light from a number of light sources are coupled into the second fiber via the first fibers. The emitting diameter of the first fibers is adjusted to match the core diameter and acceptance angle of the second fiber by reducing/increasing the number of emitting light sources being coupled to the first fibers. Thereby the brightness and efficiency of the light beam is preserved throughout the entire system in particular when the beam is passed from the first fibers to the second fiber, even if the power is reduced or the diameter of the second fiber is very small. Accurate knowledge of the optical beam which is eventually emitted by the second fiber is obtainable. Further, a method for delivering optical power from a number of light sources using the fiber delivery system.

Abstract: An optical system comprising a light source and a beamsplitter for splitting the beam of the light source into a primary output beam and a secondary output beam. The power of the secondary output beam is a substantially fixed small percentage (preferably less than 0.5%, such as less than 0.1%) of the power of the primary output beam, at least within a certain wavelength range. Thus, measuring the power of the secondary output beam provides a precise measure for the power of the primary output beam. May be used for controlling/adjusting the output power of the primary output beam, e.g. for keeping the power substantially constant. The fixed percentage is preferably invariant to wavelength variations, at least within a certain wavelength range. Preferably, a low variation in power (ripple) is induced.

Abstract: A connector assembly for releasable connecting an optical fiber to a laser apparatus to allow a laser beam to be coupled into the fiber. Comprises a first connector part being positioned at the fiber and a second connector part being positioned at the laser apparatus. When the first and second connector parts are not connected, the first connector part protects the tip of the fiber. The first connector part further comprises a window positioned in the beam path of the laser beam emitted from the laser apparatus for further protection of the fiber tip. Dust and dirt is prevented from access to the fiber. The connector assembly may comprise information means for containing information about the fiber and/or a light emitting device, and information may be transferred from a handpiece to the information means via electrical, optical, mechanical and/or magnetical means.