Pulsed holographic system having independent universal beam adjustment
US4049336A · kind A · utility
0Cited by
7References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1975 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Jul 24, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2222/33
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved holographic instrument for evaluating the structural integrity of a load-bearing structure by recording on a holographic recording medium two successive holograms of the structure under differing stress conditions to produce a holographic interferogram containing information defining a deformation fringe pattern representing the deformations in the structure resulting from the change in stress conditions. A holographic recording unit for the optical signature instrument and for general holographic recording use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.