Patent ID: 8824839
Filing Date: 2014-09-02
Classification: G02B,Y10T

Abstract:
1. An optical coupling device comprising: an optical fiber holder configured to hold an optical fiber; a wavelength conversion member including a phosphor and an optical characteristic matching member that matches optical characteristics of the phosphor to desired optical characteristics and configured to convert a wavelength of a laser beam that has passed through the optical fiber and enters the wavelength conversion member into a desired wavelength; a wavelength conversion member holder configured to hold the wavelength conversion member, and to bond the optical fiber holder so as to the optical fiber and the wavelength conversion member are optically couple each other, a first region which is formed on an end face of the optical fiber and an end face of the wavelength conversion member, which are optically coupled, when bonding the optical fiber holder and the wavelength conversion member holder, and in which foreign bodies that shield the laser beam are removed from an optical axis of the optical fiber and an optical axis of the wavelength conversion member; and a second region which is formed outside the first region when bonding the optical fiber holder and the wavelength conversion member holder, and in which the foreign bodies removed from the first region flow.