US Patent 10228218 Bow sight

A bow sight for recurve and compound bows includes a cylindrical housing, an exterior sight pin, and a rheostat cover to control the illumination of the sight pin. The sight pin is part of a ring pin assembly that mates with one end of the housing. An optical fiber is mounted on the external surface of the ring pin assembly and connected with the sight pin to illuminate the pin. The cover rotates about the housing and includes a portion that extends over the ring pin assembly to control the exposure of the optical fiber to ambient light to thereby control the intensity of illumination of the pin.