Patent ID: 6619134
Filing Date: 2003-09-16
Classification: G01B,G01D,G01G

Abstract:
A device for measuring small forces and displacements comprising, in a body (1) of the device,a detector means comprising a light source (4) and a position-sensitive detector (5), and a sensing means comprising a spring means (2) to be loaded with a force to be measured and a shading means (3) mounted to the spring means (2), which shading means moves under the influence of the force loading the spring means (2) in a light beam of the light source (4) of the detector means, the beam being directed towards an active surface of the detector (5), characterized in that the detector means and the sensing means are arranged into a common clamp (8) arranged in the body (1) of the device, which clamp comprises a material having a small coefficient of thermal expansion, wherein the spring comprises a first end mounted onto the common clamp, and wherein the shading means is mounted onto a second end of the spring.