Abstract: A device (10) for clamping a lens (11) to a spectacle frame (12) comprises a bridge (16), which is rotatable about a pin (19) fixed to the body of the frontal frame or to the nose pad carrying element of the spectacle, said bridge being provided with two opposite ends relative to said pin, of which: a first end (27) is provided with a thread suitable for cooperating with a screw (26) which is suitable for causing the rotation movement of the bridge about said pin; and the second end (28) directly cooperates with the lens, by exerting a force on the surface of said lens, said force keeping the lens pressed against a conjugate element (22, 24) which is present on the body of the frontal frame and/or of the nose pad carrying element.