| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sealing structure of an optical element which excels in environment resistance and is adaptable to miniaturization. <P>SOLUTION: The sealing structure 20 includes an optical element 22 which is mounted on a leadframe 30 having a light transmitting part 38, wherein the optical plane 41 of the optical element 22 faces the light transmitting part 38 to close an end part 48 in the axial-line direction of the light transmitting part 38. The sealing structure 20 also includes a sealing member 29 which is formed in regions except an optical path 80 and seals the optical element 22. By forming the sealing member 29 in regions except the optical path 80, reduction of the light utilization efficiency is prevented even if a substance that enhances the environment resistance is added to the sealing member. Besides, by mounting the optical element 22 on the leadframe 30 with a face-down configuration, the sealing structure 20 can be easily formed even if the optical element 22 is of a small size. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
