LIGHT-EMITTING DEVICE HAVING DIFFRACTIVE OPTICAL FILM ON LIGHT EMISSION SURFACE AND METHOD FOR MANUFACTURING SAME

申请公布号：: KR20050083560(A)
申请号：: KR20047013512
申请日期：: 2004.08.30
申请公布日期：: 2005.08.26
申请人：: SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人：: USHIRO TOSHIHIKO;OKUBO SOICHIRO;MATSUURA TAKASHI
分类号：: G02B5/18;G02B27/00;H01S5/026;H01S5/028;(IPC1-7):H01S5/028
主分类号：: G02B5/18
摘要：: A light-emitting device having a practical, small diffractive optical film on the light emission surface is efficiently manufactured at low cost. The light-emitting device (LD) is provided with a diffractive optical film (DF) on the light emission surface. The diffractive optical film (DF) comprises a translucent DLC (diamond-like carbon) layer, and this translucent DLC layer includes a modulated refractive-index diffraction grating having a local region of a relatively high refractive index and another local region of a relatively low refractive index.