Method of manufacturing a light concentrator for a light emitting diode array

Abstract

Abstract PURPOSE:To obtain a high optical coupling efficiency, by using a photopolymerization material, and making an output light from an LED have directivity. CONSTITUTION:Onto a light emission surface 3a of an LED array 1 provided with an LED 3, a sheet-like photopolymerization material 5 containing a photopolymerization substance is made to adhere, one end 8 of an optical fiber array 7 is stuck and placed on the surface of the photopolymerization material by use of a coupling member 12, and each one end of an optical fiber 6 is opposed to the ligit emission surface 3a of each LED 3. Subsequently, when an ultraviolet ray L being photopolymerization photosensitive wavelength light is made incident from the other end 9a of the optical fiber 6, the photopolymerization substance of the photopolymerization material 5 is photopolymerized and its refractive index is raised, therefore, it is fixed by a desired refractive index. Accordingly, it is possible to obtain an optical coupler having high efficiency, by making diffused light of the LED have directivity.

Inventors

• 👤 Toshiyuki Iguchi
• 👤 敏之 井口

Bibliographic Details