| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical semiconductor apparatus capable of improving incidence level of infrared signal even if a mesh-like part is provided in front of a light-receiving lens. <P>SOLUTION: Since a recess 12 is formed around a light-receiving lens 8a, the infrared optical signal in the diagonal direction enters the light-receiving lens 8a through the recess 12. When compared with the case with no recess 12, the incidence level of infrared optical signal is higher, the incident angle range of the infrared optical signal is wider, and the reception range (directivity) of the infrared optical signal is expanded with a PD chip 3. <P>COPYRIGHT: (C)2009,JPO&INPIT |
