| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light-emitting unit which emits light efficiently without regard to the shape of the opening window of a light-emitting element substrate frame material, and to provide an illuminating device using the same unit, image sensor and image reading apparatus. <P>SOLUTION: The light-emitting unit comprises a light-emitting element, a light-emitting element substrate mounting the light-emitting element, and the light-emitting element substrate frame material having the opening window for exposing the light-emitting element. Inside of the opening window is shielded with first resin and the second resin, and the ratio of the second resin to the first resin becomes smaller from the inside of a light-emitting window toward the outside of the light-emitting window. The first resin is transparent resin, and the second resin is color resin of high brightness or resin containing a light-reflecting and/or dispersing material. A cross-sectional boundary line of the first resin and the second resin is a curved line, so that light reflected by the bottom surface of the opening window among light outgoing from the light-emitting element also can outgo to outside efficiently. <P>COPYRIGHT: (C)2007,JPO&INPIT |
