Panasonic Intellectual Property Management Co., Ltd.

Naoto Tada

Suguru Nakao

Shuji Yamashita

Kazuya Honda

Hiromi Kanzawa

As a photoreceiver for a remote controller used in a display device or the like, a photoreceiver that is compact and has excellent light receiving sensitivity is provided. The photoreceiver includes a light receiving sensor that receives remote controller signal light from a remote controller to convert the received remote controller signal light into an electric signal, and a light guide body that guides the remote controller signal light to the light receiving sensor. The light guide body includes at least a first light guide body including an incident surface upon which the remote controller signal light is incident, and a second light guide body including an emission surface from which remote controller signal light is emitted, and a section of the first light guide body shows a round cornered rectangle, and a section of the second light guide body shows a substantial rectangle.

Photoreceiver and display device

A light receiving device has a light receiving section for receiving a remote control signal light beam, and a light guide section for guiding the light beam to the light receiving section. The light guide section has a first reflection surface for reflecting the light beam to the light receiving section, the first reflection surface being disposed to oppose obliquely at a sharp angle to an entrance plane, and a second reflection surface for guiding the remote control signal light beam, the second reflection surface being disposed between the entrance plane and the first reflection surface. The first reflection surface includes a circular arc curved surface curved outward in a part closer to the entrance plane and farther from the light receiving section, and a linear inclined surface in a part approaching the light receiving section from the curved surface.

Growing community of inventors

Osaka, Japan

Naoto Tada