Optical measuring device with position indicator
US4521112A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1982 |
| Grant date | Jun 4, 1985 |
| Priority date | — |
| Expiry date | Dec 22, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical measuring device comprising a parallel scanning ray beam generator, condensing means for condensing said parallel scanning ray beams after said parallel scanning ray beams have passed through a workpiece being measured, and a single light receiving element for sensing the brightness of said scanning ray beams condensed by said condensing means to convert the same into an electric signal, whereby the dimensions of the workpiece being measured are measured from the time length of a dark portion or a bright portion generated due to the obstruction of said parallel scanning ray beams by the workpiece being measured, which has been interposed between the parallel scanning ray beam generator and said light receiving element, a plurality of light emitting elements are arranged in opposed relations to the scanning scope of the parallel scanning ray beams, an output from the light receiving element during a single scanning time is time-shorn in accordance with the number of the light emitting elements to thereby cause the light emitting element or elements to emit light in accordance with the position of the workpiece being measured with respect to the scanning scope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.