| 摘要 |
<P>PROBLEM TO BE SOLVED: To radiate white light with small color tone unevenness to an irradiated surface, in a semiconductor light-emitting apparatus having a cavity structure package, which seals a semiconductor light-emitting element mounted in the cavity with a sealing resin which disperses one or more phosphors. <P>SOLUTION: In a semiconductor light-emitting apparatus, a red phosphor layer 7 is arranged so as to cover a blue LED element 5 mounted in a cavity 2. A green phosphor layer 8, a binder resin 9, and a second resin member 11 are sequentially arranged on the red phosphor layer. In addition, a relationship of a distance (a) from an upper surface 5a of the LED element 5 to an upper surface 10a of the first sealing resin 10, a thickness (b) of the second resin member 11, and a distance (c) from a light axis X to a periphery 11c, is set so that an angle θ between the light axis X of the LED element 5 and a line C crossing with the light axis X on the upper surface 5a of the LED element 5 and crossing with the periphery 11c of the upper surface 11a of the second resin member 11 becomes smaller than a critical angle τ of light ray incoming from the second resin member 11 to an air layer 12 (θ<τ). <P>COPYRIGHT: (C)2010,JPO&INPIT |
