Patent ID: 6313912
Filing Date: 2001-11-06
Classification: G01C

Abstract:
Laser leveling instrument with a beam platform that can be leveled and fine self-leveling of a laser beam, having an inner cylinder which is oscillatingly suspended in an outer cylinder and to the lower end of which orientation elements are secured, comprising:a capacitor system having electrode surfaces which are situated opposite to one another formed by the outer cylinder and the inner cylinder;means for providing a measurable capacitance when the inner cylinder and outer cylinder come in contact; anda compensator circuit for measuring said measurable capacitance when the inner cylinder and outer cylinder come in contact;wherein one of the electrode surfaces is segmented, with a separation of extending in the direction of a beam axis,wherein the outer cylinder is vertically connected to the beam platform centrally to the beam axis, andwherein the capacitor system derives signals for detection of a pendulum position of the inner cylinder and wherein the means for providing a measurable capacitance prevents an electrical short circuit when the inner cylinder and outer cylinder come in contact.