Patent ID: 8087198

Claim:
A sight, comprising: an ocular housing; an objective housing; a saddle connected between the ocular housing and the objective housing; a crosshair disposed in the ocular housing; a light-emitting element disposed in the ocular housing, illuminating the crosshair; a focal adjustment member disposed on the saddle, adjusting an objective focus for the sight; and a key-type member connected to the focal adjustment member and electrically connected to the light-emitting element, controlling operation of the light-emitting element and adjusting luminous brightness thereof, wherein the key-type member comprises a key, a control switch, a first circuit board, a second circuit board, a control chip, and a cell, the control switch is electrically connected to the first circuit board and corresponds to the key, the second circuit board is electrically connected to the first circuit board and control chip, the cell comprises a first power connection pin and a second power connection pin, the first power connection pin is electrically connected to the control chip, and the light-emitting element is electrically connected between the control chip and the second power connection pin of the cell.