Patent ID: 7259838
Filing Date: 2007-08-21
Classification: G01C,G01S,G02B

Abstract:
1. An optical beam separation element for a measuring apparatus configured to transmit an optical beam towards an object in a transmission direction through the optical beam separation element, and to receive an optical beam reflected from the object in a reception direction through the optical beam separation element, wherein the optical beam separation element comprises: a reflecting component with a reflecting surface and an aperture for forming an optical channel common to the transmission and the reception directions in the optical beam separation element; the reflecting surface of the reflecting component being positioned at an angle with respect to the optical channel; the aperture extending from the reflecting surface through the optical beam separation element being configured to pass the optical beam through the optical beam separation element to the optical channel in the transmission direction; the reflecting component being configured to isolate the optical beam of the transmission direction and the optical beam of the reception direction by reflecting the optical beam of the reception direction arriving at the reflecting surface away from the optical beam of the transmission direction; and an aperture optical component for focusing or collimating the optical beam of the transmission direction to the common optical channel wherein the aperture optical component is placed in the aperture of the reflecting component.