Patent ID: 6181452
Filing Date: 2001-01-30
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 first rotary mechanism for rotating the light transmitting and receiving unit about a first axis;a second rotary mechanism for rotating the light transmitting and receiving unit about a second axis perpendicular to the first axis;wherein a center of the light receiving lens is on the second axis, and the light transmitting lens is smaller in diameter than the light receiving lens, and wherein a center of the light transmitting lens is offset from the second axis by a predetermined distance to provide a space at a side of the light transmitting lens, the space accommodating the first rotary mechanism.