Patent ID: 6323977
Filing Date: 2001-11-27
Classification: H04B

Abstract:
An optical transmitting and receiving apparatus comprising:a light transmitting and receiving unit including 1) a light emitting element, 2) a light transmitting lens, 3) a light receiving lens, and 4) a photosensitive element, wherein the light emitting element outputs light, and the light outputted from the light emitting element passes through the light transmitting lens before leaving the light transmitting and receiving unit as outgoing light, wherein the light receiving lens concentrates incoming light on the photosensitive element, and wherein the light transmitting lens and the light receiving lens are arranged side by side and face in equal directions;a rotary mechanism for rotating the light transmitting and receiving unit;a dome-shaped cover covering the light transmitting and receiving unit, and conducting light of a predetermined wavelength while blocking light of a wavelength different from the predetermined wavelength, the cover having a curved shape separate from a trajectory defined by the light transmitting and receiving unit during rotation thereof; anda cylindrical visor connected to the light transmitting lens and having an end close to an inner surface of the cover, wherein the end of the visor has a curved shape similar to the curved shape of the cover.