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Class Information
Number: 356/5.09
Name: Optics: measuring and testing > Range or remote distance finding > With photodetection > Of frequency difference
Description: Subject matter that either sends a defined frequency beam or frequency modulates an outgoing pulse or continuous wave optical beam in order to compare the detected return frequency to the transmitted frequency for determining range calibrated frequency differences.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5847816 |
Fiber optic micro-doppler ladar system and operating method therefor |
Dec. 8, 1998 |
| 5835199 |
Fiber-based ladar transceiver for range/doppler imaging with frequency comb generator |
Nov. 10, 1998 |
| 5828459 |
Apparatus and method for scanning laser microscopy |
Oct. 27, 1998 |
| 5825465 |
Autodyne detection laser velocimeter |
Oct. 20, 1998 |
| 5748295 |
Method and apparatus for determining the range, direction and velocity of an object |
May. 5, 1998 |
| 5715044 |
Laser radar |
Feb. 3, 1998 |
| 5706079 |
Ultra-high sensitivity transducer with chirped bragg grating relector |
Jan. 6, 1998 |
| 5648844 |
Laser liquid level gauge with diffuser |
Jul. 15, 1997 |
| 5621514 |
Random pulse burst range-resolved doppler laser radar |
Apr. 15, 1997 |
| 5610705 |
Doppler velocimeter |
Mar. 11, 1997 |
| 5608514 |
High range resolution ladar |
Mar. 4, 1997 |
| 5594543 |
Laser diode radar with extended range |
Jan. 14, 1997 |
| 5589928 |
Method and apparatus for measuring distance to a target |
Dec. 31, 1996 |
| 5535044 |
Optical frequency mixing apparatus |
Jul. 9, 1996 |
| 5534993 |
Dual-wavelength frequency-chirped microwave AMCW ladar system |
Jul. 9, 1996 |
| 5534992 |
Optical measuring apparatus |
Jul. 9, 1996 |
| 5510890 |
Laser radar with reference beam storage |
Apr. 23, 1996 |
| 5502558 |
Laser doppler velocimeter |
Mar. 26, 1996 |
| 5500729 |
Magneto-optical arrangement for laser radar |
Mar. 19, 1996 |
| 5485009 |
Laser imaging system with a linear detector array |
Jan. 16, 1996 |
| 5446530 |
Amplitude modulated corrected frequency modulated laser |
Aug. 29, 1995 |
| 5347357 |
High-voltage crystal ramp generator and integrator for FM laser radar |
Sep. 13, 1994 |
| 5343285 |
Electrical circuit for measuring the frequency of laser Doppler signals |
Aug. 30, 1994 |
| 5337056 |
Dynamically tunable notch filter |
Aug. 9, 1994 |
| 5323223 |
Radar laser transmitter |
Jun. 21, 1994 |
| 5317376 |
Solid state pulsed coherent laser radar for short range velocimetry applications |
May. 31, 1994 |
| 5309212 |
Scanning rangefinder with range to frequency conversion |
May. 3, 1994 |
| 5307138 |
Energy efficient modulation-demodulation optical system |
Apr. 26, 1994 |
| 5298962 |
Pulse compression signal processor utilizing identical saw matched filters for both up and down chirps |
Mar. 29, 1994 |
| 5289252 |
Linear frequency modulation control for FM laser radar |
Feb. 22, 1994 |
| 5274361 |
Laser optical mouse |
Dec. 28, 1993 |
| 5267011 |
Laser doppler frequency control |
Nov. 30, 1993 |
| 5267016 |
Laser diode distance measurement |
Nov. 30, 1993 |
| 5262836 |
Coherent double homodyne optical backscatter filter |
Nov. 16, 1993 |
| 5260762 |
Device for non-contact measurement of speed, displacement travel and/or distance |
Nov. 9, 1993 |
| 5237331 |
Eyesafe coherent laser radar for velocity and position measurements |
Aug. 17, 1993 |
| 5208641 |
Laser cavity helmet mounted sight |
May. 4, 1993 |
| 5151747 |
Laser radar wire detection |
Sep. 29, 1992 |
| 5110207 |
Optical system including interferometer for enhancing the performance of a photoconductive non-shot noise limited detector |
May. 5, 1992 |
| 5069545 |
Laser radar system |
Dec. 3, 1991 |
| 5053630 |
Method and apparatus for determining the sign of the direction of a particle stream |
Oct. 1, 1991 |
| 5035506 |
Coherent detection with increased sensitivity using four-wave amplification |
Jul. 30, 1991 |
| 5029999 |
Laser radar device |
Jul. 9, 1991 |
| H933 |
Infrared coherent optical sensor |
Jul. 2, 1991 |
| 5020062 |
Apparatus and method for frequency modulating a waveguide laser |
May. 28, 1991 |
| 5000567 |
Laser radar system for detecting an object |
Mar. 19, 1991 |
| 4995720 |
Pulsed coherent Doppler laser radar |
Feb. 26, 1991 |
| 4973154 |
Nonlinear optical ranging imager |
Nov. 27, 1990 |
| 4960329 |
Chirp pulse echo ranging apparatus |
Oct. 2, 1990 |
| 4957365 |
Optical meter with dual functions avalanche photodiode |
Sep. 18, 1990 |
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