| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent undesired incident light and reflected light from an end face of a transparent member directly adhered onto an optical element from intruding into a light receiving part, and to make an optical device small in size and low in cost. <P>SOLUTION: The transparent member 5 covering a light receiving part 2 on a top surface of the optical element 3 comprises a base material 8 adhered to the top surface of the optical element 3 and a resin part 9 forming a fillet between an outer surface of the base material 8 and the top surface of the optical element 3. In the transparent member 5, the base material 8 and the resin part 9 are optically integrated, an outer circumferential surface becomes an inclined face 7 and a distance to the light receiving part 2 becomes long. Consequently, undesired incident light from the outside of the inclined face 7 is inhibited from reaching the light receiving part 2 and incident light from the inside of the inclined face 7 is inhibited from being reflected light, reaching the light receiving part 2. Because of the inclined face 7, it is unnecessary to take into consideration, for example, the interference of a wire bond with a capillary, and the optical element 3 may have the same chip size as in the conventional manner. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
