Optics: measuring and testing – Velocity or velocity/height measuring – With light detector
Reexamination Certificate
2006-06-13
2006-06-13
Tarcza, Thomas H. (Department: 3662)
Optics: measuring and testing
Velocity or velocity/height measuring
With light detector
C356S005090, C356S028000
Reexamination Certificate
active
07061592
ABSTRACT:
The invention relates to a system for measuring velocity. In one embodiment, the system includes a laser assembly having a laser diode and a power detection diode. The laser diode emits a plurality of laser signals which are frequency-modulated, wherein a selected one of the frequency-modulated signals is directed to and reflected from a target, and wherein another selected one of the frequency-modulated laser signals transmitted via one signal path is combined with the reflected laser signal transmitted via another delayed signal path in the interior of the laser assembly. The power detection diode detects the combined signal. The system also includes a signal processor configured to obtain velocity information from the detected signal by use of the harmonic frequencies associated with the modulation frequency.
REFERENCES:
patent: 3915572 (1975-10-01), Orloff
patent: 4594000 (1986-06-01), Falk et al.
patent: 4611912 (1986-09-01), Falk et al.
patent: 4846571 (1989-07-01), Jelalian et al.
patent: 4902125 (1990-02-01), Keene et al.
patent: 5006721 (1991-04-01), Cameron et al.
patent: 5029999 (1991-07-01), Kremer et al.
patent: 5088815 (1992-02-01), Garnier et al.
patent: 5117239 (1992-05-01), Riza
patent: 5157257 (1992-10-01), Geiger
patent: 5164784 (1992-11-01), Waggoner
patent: 5170218 (1992-12-01), Keene
patent: 5216477 (1993-06-01), Korb
patent: 5221927 (1993-06-01), Palmer
patent: 5250810 (1993-10-01), Geiger
patent: 5267010 (1993-11-01), Kremer et al.
patent: 5274361 (1993-12-01), Snow
patent: 5394233 (1995-02-01), Wang
patent: 5500729 (1996-03-01), Redman et al.
patent: 5587785 (1996-12-01), Kato et al.
patent: 5610705 (1997-03-01), Brosnan et al.
patent: 5822047 (1998-10-01), Contarino et al.
patent: 5838439 (1998-11-01), Zang et al.
patent: 6040898 (2000-03-01), Mrosik et al.
patent: 6097331 (2000-08-01), Matsugatani et al.
patent: 6100965 (2000-08-01), Nerin
patent: 6133993 (2000-10-01), Labaar
patent: 6141086 (2000-10-01), Vahala et al.
patent: 6147747 (2000-11-01), Kavaya et al.
patent: 6181412 (2001-01-01), Popescu et al.
patent: 6212951 (2001-04-01), Derevyagin
patent: 6301968 (2001-10-01), Maruyama et al.
patent: 6311121 (2001-10-01), Kuragaki et al.
patent: 6311529 (2001-11-01), Kang
patent: 6317073 (2001-11-01), Tamatsu et al.
patent: 6320651 (2001-11-01), Manhart et al.
patent: 6323943 (2001-11-01), Maruyama et al.
patent: 6608669 (2003-08-01), Holton
patent: 6671638 (2003-12-01), Kitazumi et al.
patent: 6707027 (2004-03-01), Liess et al.
patent: 6759671 (2004-07-01), Liess et al.
patent: 6813218 (2004-11-01), Antonelli et al.
Koelink et al. (1994) Fiber-coupled self-mixing diode-laser Doppler velocimeter: technical aspects and flow velocity profile disturbances in water and blood flows. Applied Optics. 33:5628-5641.
Koelink et al. (1992) Laser Doppler velocimeter based on the self-mixing effect in a fiber-coupled semiconductor laser: theory. Applied Optics. 31:3401-3408.
Rudd (1968) A laser Doppler velocimeter employing the laser as a mixer-oscillator. Journal of Physics E. 1:723- 726.
Shimizu (1987) Directional discrimination in the self-mixing type laser Doppler velocimeter. Applied Optics. 26:4541-4544.
Shinohara et al. (1986) Laser Doppler velocimeter using the self-mixing effect of a semiconductor laser diode. Applied Optics. 25:1417-1419.
Kenneth Miller, (1972) A Covariance Approach to Spectral Moment Estimation. IEEE Transactions on Information Theory. vol. It-18, No. 5 pp. 588-596.
Pan et al. (1996) Measuravle-Range Extension of Range-Finding Speedometer Using Self-Mixing Laser Diode, IEEE Industry Applications Conference, vol. 3, Meeting 31, pp. 1640-1644.
Hara et al., (1997) New Digital Vibrometer with High Accuracy Using Self-Mixing Type LDV, IEEE Instrumentation/Measurement Technology Conference, vol. 2, Conf. 14, pp. 860-864.
Alsomiri Isam
Doppler Ltd.
Knobbe Martens Olson & Bear LLP
Tarcza Thomas H.
LandOfFree
System and method for measuring velocity using frequency... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for measuring velocity using frequency..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for measuring velocity using frequency... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3643877