Ligt emitting device

Abstract

According to one embodiment, a light emitting device includes a light emitting element, a molded body, a first sealing layer and a converging lens. The light emitting element has a first surface and a second surface with an optical axis of emission light being perpendicular to the second surface. The molded body includes a recess. The first surface side of the light emitting element is disposed in the recess. The first sealing layer covers the light emitting element in the recess and includes a first transparent resin and phosphor particles. The converging lens is provided on the first sealing layer and has a refractive index increasing with increase of distance from the optical axis. The refractive index at a position in contact with an outer edge of the upper surface of the first sealing layer is higher than a refractive index of the first transparent resin.

1 - 20 . (canceled) 
     
     
         21 . A light emitting device comprising:
 a light emitting element having a first surface and a second surface opposite to the first surface, with an optical axis of emission light being perpendicular to the second surface;   a molded body including a recess, an inner wall of the recess surrounding side surfaces of the light emitting element, an upper edge of the inner wall being higher than the second surface of the light emitting element, the first surface of the light emitting element disposed in the recess; and   a sealing layer covering the light emitting element and a portion of the inner wall and including a transparent resin, phosphor particles dispersed in the transparent resin and fillers dispersed on a side of an upper surface of the transparent resin, a refractive index of the fillers being higher than a refractive index of the transparent resin;   a refractive index of the upper surface of the sealing layer being higher than the refractive index of the molded body.   
     
     
         22 . The device according to  claim 21 , wherein a width of the recess increases upward. 
     
     
         23 . The device according to  claim 21 , wherein the fillers are dispersed in the transparent resin so that weight composition ratio increases with increase of distance from the optical axis on the side of the upper surface of the sealing layer. 
     
     
         24 . The device according to  claim 21 , wherein the fillers are made of one of zirconium dioxide, titanium oxide, and potassium titanate. 
     
     
         25 . The device according to  claim 21 , wherein the refractive index of the upper surface of the sealing layer increases toward an outer edge of the upper surface of the sealing layer. 
     
     
         26 . The device according to  claim 21 , wherein the sealing layer is made of silicone resin or epoxy resin. 
     
     
         27 . The device according to  claim 21 , wherein the refractive index of the sealing layer is equal to 1.6 or more at an outer edge of the upper surface. 
     
     
         28 . The device according to  claim 21 , further comprising:
 a lead exposed at a bottom surface of the recess; and   a bonding wire connecting the light emitting element and the lead.   
     
     
         29 . The device according to  claim 21 , wherein the refractive index of the sealing layer on a side in contact with the molded body is higher than a refractive index of the molded body on the side of the upper surface of the sealing resin. 
     
     
         30 . The device according to  claim 29 , wherein reflective fillers are dispersed in the molded body.