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US 4,286,879 AGranted
Device, particularly for the digital measuring of force
OwnerGerd Jager, Wolfgang Bernuth +3inventors
InventorsGerd Jager, Wolfgang Bernuth, Klaus Irrgang, Hans-Joachim Wendt, Siegfried Honecker
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Abstract
A measuring device, particularly for the measurement of force, has a tilt-invariant interferometer attached to a bifurcated deformation body which consists of a base with one or several diaphragms attached thereon. The interference fringes are counted photoelectrically.
Claims84
A measuring device, particularly for the digital measurement of force, comprising a monochromatic light source;
- sensing means;
- a deformable body;
- at least one diaphragm operatively connected to said body;
- an optical splitter affixed to said body and adapted to receive light from said source;
- two interometer mirrors connected to said body;
- a first tilt-invariant reflector affixed to said body;
- a second tilt-invariant reflector affixed to said diaphragm;
- and force-receiving means operatively connected to said diaphragm so that the force to be measured is transmitted to said diaphragm causing the light from said source to be phase-shifted in said optical splitter, said mirrors and said first and second tilt-invariant reflectors in response to the displacement of said diaphragm under action of said force and thereupon detected by said sensing means.
5 more elements
Dependencies are inferred from the claim text.