Quadratic frequency modulated absolute distance measuring interf

Details Quadratic frequency modulated absolute distance measuring interf Quadratic frequency modulated absolute distance measuring interf

1988-09-06

1989-12-12

Willis, Davis L.

Optics: measuring and testing

By particle light scattering

With photocell detection

356358, G01B 902

Patent

active

048863637

ABSTRACT:
In a frequency modulated absolute distance measurement interferometer, distance to a test object is determined by quadratically modulating the frequency of a laser beam, and detecting the rate of change of a beat frequency produced at the output of the interferometer, thereby enabling the measurement to a moving test object.

REFERENCES:
patent: 3767307 (1973-10-01), Bowker
patent: 4019818 (1977-04-01), Vilkomerson
patent: 4165182 (1979-08-01), Vilkomerson
patent: 4295741 (1981-10-01), Palma et al.
patent: 4594003 (1986-06-01), Sommargren
patent: 4611915 (1986-09-01), Gillard et al.
patent: 4632554 (1986-12-01), Pearce
patent: 4714346 (1987-12-01), Eichen et al.
patent: 4749277 (1988-06-01), Eichen et al.
patent: 4759628 (1988-07-01), Tatsuno et al.
Kubota et al., "Interferometer for Measuring Displacement & Distance", Optics Letters, vol. 12, No. 5, (1987), 310-12, p. 2, line 5.
Kikuta et al., "Distance Measurement by the Wavelength Shift of Laser Diode Light", Applied Optics, vol. 25, No. 17, (1986), 2976-80.
Tatsuno et al., "Diode Laser Direct Modulation Heterodyne Interferometer", Applied Optics, vol. 26, No. 1, (1987), 37-9.
A. J. denBoef, "Interferometric Laser Rangefinder Using A Frequency Modulated Diode Laser", Applied Optics, vol. 26, No. 21, (1987)--4545-50.

Affiliated with

Also associated with

Rating

Quadratic frequency modulated absolute distance measuring interf does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Quadratic frequency modulated absolute distance measuring interf, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quadratic frequency modulated absolute distance measuring interf will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2118659