Patent ID: 8979340
Filing Date: 2015-03-17
Classification: G02B

Abstract:
1. A method for illuminating a dental object with high intensity light, whereby radiation emitted by a plurality of LEDs is coupled into a fiber-optic light guide, each LED is arranged in a stationary manner on a first circle having a first diameter, each LED is assigned to a stationary first fiber-optic light guide in a form of an arcuate optical fiber with first and second coupling surfaces, wherein the second coupling surfaces are arranged on a second circle with a second diameter, radiation from each one of the LEDs is coupled in via the first coupling surface into the first fiber-optic light guide, the radiation of the LEDs emerging from the second coupling surfaces of the first fiber-optic light guide is transmitted onto a coupling surface of a second fiber-optic light guide, the radiation emerging from the second fiber-optic light guide is used to illuminate the dental object to be measured, wherein the LEDs are operated in a pulsed manner with a pulse duration between 1 μs and 100 ms and a pulse/pause ratio of less than 1 and are activated sequentially; wherein the second coupling surfaces of the first fiber-optic light guide are arranged on a closed circular track, along which is moved the second fiber-optic light guide with its coupling surface or an optical system oriented towards the coupling surface of the stationary second fiber-optic light guide, wherein for a moving second fiber-optic light guide, the second coupling surface is rotated about an axis, and wherein for a stationary second fiber-optic light guide, the optical system is moved about the axis, and wherein the first circle and the second circle intersect the axis in different planes.