Global to push GA events into
skip to main content

Title: Hand held phase-shifting diffraction Moire interferometer

An interferometer is described in which a coherent beam of light is generated within a remote case and transmitted to a hand held unit tethered to said remote case, said hand held unit having optical elements for directing a pair of mutually coherent collimated laser beams at a diffraction grating. Data from the secondary or diffracted beams are then transmitted to a separate video and data acquisition system for recording and analysis for load induced deformation or for identification purposes. Means are also provided for shifting the phase of one incident beam relative to the other incident beam and being controlled from within said remote case. 4 figs.
Inventors:
;
Issue Date:
OSTI Identifier:
6996214
Assignee:
EG G Idaho, Inc., Idaho Falls, ID (United States) PTO; EDB-94-150499
Patent Number(s):
US 5349442; A
Application Number:
PPN: US 8-034636
Contract Number:
AC07-76ID01570
Resource Relation:
Patent File Date: 18 Mar 1993
Country of Publication:
United States
Language:
English
Subject:
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION; DATA ACQUISITION SYSTEMS; DESIGN; IDENTIFICATION SYSTEMS; INTERFEROMETERS; DIFFRACTION GRATINGS; LASER RADIATION; OPERATION; PHASE SHIFT; PORTABLE EQUIPMENT; STRESS ANALYSIS; ELECTROMAGNETIC RADIATION; EQUIPMENT; GRATINGS; MEASURING INSTRUMENTS; RADIATIONS; 055001* - Nuclear Fuels- Safeguards, Inspection, & Accountability- Technical Aspects