Receiver, reception device, communication device, and communication system

Abstract

A receiver includes a ball lens, a light receiving element array including a plurality of light receiving elements arranged around the ball lens, and a light guide including a plurality of reflection units that guide optical signals concentrated by the ball lens toward the light receiving elements. Each of the reflection units includes a first reflector associated with one of the plurality of light receiving elements and having reflecting surfaces formed on inner side surfaces tapered from the ball lens toward the light receiving element, and a second reflector disposed inside the first reflector and formed by combining double-sided mirrors having reflecting surfaces parallel to the reflecting surfaces of the first reflector.

Dependencies are inferred from the claim text.