Apparatus for measuring variations in size on bodies subjected to temperature variations
AssigneeExpert System Solution S.r.L.
InventorMariano Paganelli
Life of this patent
Estimating the term…
Abstract
The apparatus comprises: a holder for a test piece; at least two optical systems, identifying two optical paths located at a predetermined and known reciprocal distance, which are able to focalize, with a predetermined degree of magnification, images of two ends of the test piece; the at least two optical systems being aligned with the holder; at least one viewing and measuring device able to collect the images which are focalized by the at least two optical systems. The apparatus is structured to perform measurement of a size of a test piece while completely eliminating any influence on such measurement on the part of the holder or the measuring system.
Claims11
An apparatus for measuring variations in size on bodies subjected to temperature variations, comprising:
- a holder for a test piece;
- at least two optical systems, identifying two optical paths located at a predetermined and known reciprocal distance, which are able to focalize, with a predetermined degree of magnification, images of two ends of the test piece;
- the at least two optical systems being aligned with the holder;
- at least one viewing and measuring device able to collect the images which are focalized by the at least two optical systems.
A process for measuring variations in size on bodies subjected to temperature variations, comprising the following steps:
- placing a test piece on a holder located internally of an oven in such a way that ends of the test piece can be viewed from the outside;
- using two optical systems which identify two optical paths located at a predetermined known reciprocal distance, able to focalize, with a predetermined magnification, images of two ends of a same test piece;
- using a viewing and measuring device able to collect the images focalized on the optical systems and to measure a relative distance between the two resulting images;
- determining an effective distance between the two ends of the test piece on the basis of a relative distance between the two images and the distance between the two optical paths.
Dependencies are inferred from the claim text.