Stereo multiplexed holographic particle image velocimeter
- Champaign, IL
- Urbana, IL
A holographic particle image velocimeter employs stereoscopic recording of particle images, taken from two different perspectives and at two distinct points in time for each perspective, on a single holographic film plate. The different perspectives are provided by two optical assemblies, each including a collecting lens, a prism and a focusing lens. Collimated laser energy is pulsed through a fluid stream, with elements carried in the stream scattering light, some of which is collected by each collecting lens. The respective focusing lenses are configured to form images of the scattered light near the holographic plate. The particle images stored on the plate are reconstructed using the same optical assemblies employed in recording, by transferring the film plate and optical assemblies as a single integral unit to a reconstruction site. At the reconstruction site, reconstruction beams, phase conjugates of the reference beams used in recording the image, are directed to the plate, then selectively through either one of the optical assemblies, to form an image reflecting the chosen perspective at the two points in time.
- Research Organization:
- University of Illinois (Champaign/Urbana, IL)
- DOE Contract Number:
- FG05-89ER75508
- Assignee:
- University of Illinois (Champaign/Urbana, IL)
- Patent Number(s):
- US 5548419
- OSTI ID:
- 870578
- Country of Publication:
- United States
- Language:
- English
Similar Records
Phase-conjugate holographic system for high-resolution particle-image velocimetry
The VELOPT code for estimating performance of a Fabry-Perot velocimeter
Related Subjects
multiplexed
holographic
particle
image
velocimeter
employs
stereoscopic
recording
images
perspectives
distinct
time
perspective
single
film
plate
provided
optical
assemblies
including
collecting
lens
prism
focusing
collimated
laser
energy
pulsed
fluid
stream
elements
carried
scattering
light
collected
respective
lenses
configured
form
scattered
near
stored
reconstructed
employed
transferring
integral
unit
reconstruction
site
beams
phase
conjugates
reference
directed
selectively
reflecting
chosen
collimated laser
focusing lens
reference beam
scattered light
fluid stream
laser energy
particle image
particle images
reference beams
phase conjugate
integral unit
focusing lenses
image velocimeter
holographic particle
/359/