Compact portable diffraction moire interferometer

Patent · Tue Jul 25 00:00:00 EDT 1989

OSTI ID:5288045

Deason, V A; Ward, M B

The authors present a compact and portable moire interferometer used to determine surface deformations of an object. The improved interferometer is comprised of a laser beam, optical and fiber optics devices coupling the beam to one or more evanescent wave splitters, and collimating lenses directing the split beam at one or more specimen gratings. Observation means including film and video cameras may be used to view and record the resultant fringe patterns.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4850693
• Application Number: PPN: US 7197235A
• OSTI ID: 5288045
• Resource Relation: Patent File Date: 23 May 1988
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
42 ENGINEERING
INTERFEROMETERS
DESIGN
LASERS
MATERIALS
DEFORMATION
BEAM OPTICS
CAMERAS
FIBER OPTICS
GRATINGS
LENSES
OPTICAL SYSTEMS
PORTABLE EQUIPMENT
VIDEO TAPES
EQUIPMENT
MAGNETIC STORAGE DEVICES
MAGNETIC TAPES
MEASURING INSTRUMENTS
MEMORY DEVICES
440800* - Miscellaneous Instrumentation- (1990-)
426002 - Engineering- Lasers & Masers- (1990-)