Patent ID: 11921330
Assignee: NEC CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A light receiving device comprising:
a first light guide body including at least a first light receiving surface and a first emitting end, the second light guide body and guiding signal light entering from the first light receiving surface to the first emitting end;
a second light guide body including at least a second light receiving surface and a second emitting end, the second light receiving surface being connected to the first emitting end of the first light guide body, the second light guide body guiding the signal light entering from the second light receiving surface to the second emitting end; and
a light receiver including a light receiving part connected to the second emitting end, the light receiver converting the signal light received by the light receiving part into an electric signal, wherein
the first light guide body is formed in a cylindrical shape with the first light receiving surface as a side, and the first emitting end is formed on either one of an upper surface and an undersurface, and
the second light guide body is formed in a ring shape with open ends according to a shape of the first emitting end of the first light guide body formed in the cylindrical shape.