Linear encoder
First Claim
Patent Images
1. A linear encoder for use in a machine for manufacturing workpieces having a coefficient of thermal expansion approximately between 2.5×
- 10-6 K-1 and 3.5×
10-6 K-1, the machine having two movable relative to each other objects, said linear encoder being designed for measuring a relative position of the two objects, and said linear encoder comprising a scale having a coefficient of thermal expansion approximately between 2.5×
10-6 K-1 and 3.5×
10-6 K-1, selected to substantially correspond to the coefficient of thermal expansion of the workpieces to be manufactured on the machine, said scale being attachable to one of the two objects, and a device for scanning said scale and attachable to another of the two objects.
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Abstract
A linear encoder for measuring a relative position of two objects and including a scale having a coefficient of thermal expansion between 2.5×10-6 K-1 and 3.5×10-6 K-1 approximately, and attachable to one of the objects, and a device for scanning the scale and attachable to the other of the objects.
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Citations
6 Claims
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1. A linear encoder for use in a machine for manufacturing workpieces having a coefficient of thermal expansion approximately between 2.5×
- 10-6 K-1 and 3.5×
10-6 K-1, the machine having two movable relative to each other objects, said linear encoder being designed for measuring a relative position of the two objects, and said linear encoder comprising a scale having a coefficient of thermal expansion approximately between 2.5×
10-6 K-1 and 3.5×
10-6 K-1, selected to substantially correspond to the coefficient of thermal expansion of the workpieces to be manufactured on the machine, said scale being attachable to one of the two objects, and a device for scanning said scale and attachable to another of the two objects. - View Dependent Claims (2, 3, 4, 5, 6)
- 10-6 K-1 and 3.5×
Specification