Optical position gauge
USH277H · kind H · statutory invention registration
Assignee
Inventors
Key dates
| Filing date | — |
| Grant date | May 5, 1987 |
| Priority date | — |
| Expiry date | — |
Classification
- Technology area (CPC —)General
Abstract
Apparatus for measuring the direction, extent and rate of linear displacet of a body (e.g. a steel bulkhead) subjected to a harsh environment such as shock from an explosive force. A housing containing an extendable piston is connected between the movable body and a fixed structure. The piston has a surface marked with alternating high and low light reflecting bands which pass under a pair of light emitting optical fibers fixed on the housing. Light reflected from the bands is detected and converted into corresponding out of phase electrical signals for measuring direction, extent and rate of linear displacement of the piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.