Pseudo-backscatter laser doppler velocimeter employing antiparal

Details Pseudo-backscatter laser doppler velocimeter employing antiparal Pseudo-backscatter laser doppler velocimeter employing antiparal

1976-05-27

1977-05-31

Wilbur, Maynard R.

Optics: measuring and testing

Velocity or velocity/height measuring

With light detector

250574, 350100, 350102, 350102, G01P 336

Patent

active

040266559

ABSTRACT:
A laser Doppler velocimeter for measuring the velocity of a flowing fluid comprising laser means for providing first and second beams of collimated coherent monochromatic electromagnetic radiation which are focused to intersect at a predetermined location in a flowing fluid, the movement of the particles of the fluid serving to scatter radiation in substantially all directions, the scattered radiation being shifted in frequency from that of the first beam by an amount corresponding to the velocity of the fluid at the predetermined location, a corner cube disposed generally forward of the predetermined location, the corner cube responding to a portion of the radiation scattered in the forward direction and being operative to reflect the portion in a direction substantially antiparallel to the forward direction, and a collector responsive to the frequency of the first beam and to the frequency of the reflected portion of radiation and operative to provide a frequency modulated signal representative of the velocity of the fluid at the predetermined location. In alternative embodiments, a cat's eye lens and a bank of corner cubes replace the corner cube.

REFERENCES:
patent: 3915572 (1975-10-01), Orloff
patent: 3953126 (1976-04-01), Kim et al.
patent: 3966324 (1976-06-01), Iten
Dandliker et al., Applied Optics, vol. 13, No. 2, 2-1974, pp. 286-290, 356-28.

Affiliated with

Also associated with

Rating

Pseudo-backscatter laser doppler velocimeter employing antiparal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pseudo-backscatter laser doppler velocimeter employing antiparal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pseudo-backscatter laser doppler velocimeter employing antiparal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-654961