Light Emitting Unit and Illumination Device and Image Scanner Using Such Light Emitting Unit

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20090073715A1





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A light emitting unit comprises a light emitting element, a light emitting element substrate for mounting the light emitting element, and a light emitting element substrate frame member provided with a window for exposing the light emitting element, wherein the inside of the window is sealed with a first resin and a second resin, the ratio of the second resin relative to the first resin becomes smaller toward the outside of the window from the inside thereof. The first resin is a transparent resin, and the second resin is a colored resin with a high color value or a resin including a light reflective material and/or a light scattering material. Since a sectional border line between the first resin and the second resin is a curved line, the light reflected from the bottom section of the window among the light emitted from the light emitting element can also be efficiently emitted to the outside.

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International Classification(s)


Inventor Name Address # of filed Patents Total Citations
Kishimoto, Takashi Tokyo, JP 93 815
Nemoto, Hiroyuki Tokyo , JP 98 845
Saito, Tomihisa Tokyo, JP 20 311
Sumitani, Naofumi Tokushima, JP 25 270
Takeuchi, Hidemitsu Tokyo, JP 13 302

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