Apparatus for measuring dimension of article and scale to be used in the same
US5812265A · kind A · utility
13Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 1, 1997 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | Jul 1, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/34715
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A scale has marks of a point-symmetrical shape which are arranged in matrix. The scale and an article to be measured in dimension are positioned without any relative movement. An image sensor unit detects a predetermined portion of the article and the marks of the scale corresponding to the predetermined portion of the article selectively and successively, and the image sensor unit generates output signals in accordance with the detected results of the article and the scale. The output signals are processed to calculate the dimension of the article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.