Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1995-07-31
1998-08-04
Buczinski, Stephen C.
Optics: measuring and testing
Range or remote distance finding
With photodetection
356 405, 356 406, G01C 308
Patent
active
057902429
ABSTRACT:
A three dimensional sensor includes an illumination source that produces broadband, high intensity optical energy. This optical energy includes a number of individual wavelength components. The individual wavelength components are impinged in a spot on a target. Dispersion is applied to the light reflected from the spot, either before target impingement, after target impingement, or both, whereby light of different colors is focused at different distances from the target. A maximum reflected wavelength, dependent on target range, is detected to determine the target range. In one embodiment, temporal modulation is applied to the light before target impingement. A stationary detector determines the target range by relating the maximum light received to the time it is received in order to determine the color received at that time. In another embodiment, all colors are reflected from the target simultaneously, and the reflected beam is chromatically dispersed in the transverse direction. A detector array, or a linear position sensor, is employed to determine the transverse position of the maximum amplitude of the transversely dispersed beam. The transverse position, being related to a particular color, contains information from which the range to the target is determinable.
REFERENCES:
patent: 3567320 (1971-03-01), Chitayat
patent: 3741654 (1973-06-01), Brenholdt
patent: 3788741 (1974-01-01), Buechler
patent: 3815409 (1974-06-01), Macovski
patent: 4600831 (1986-07-01), Hutley
patent: 4798951 (1989-01-01), Walker
patent: 5479258 (1995-12-01), Hinnrichs et al.
Pure And Applied Optics, May 1995, pp. 219-228 H. Perrin et al., "Longitudinally dispersive profilometer".
Optical Engineering, vol. 27 No. 2, Feb. 1988, pp. 135-142 F. Quercioli et al., "Optical surface profile transducer".
Applied Optics, Apr. 1, 1994, pp. 135-142 H.J. Tiziani et al. "Three-dimensional image sensing by chromatic confocal microscopy".
Metzger Robert J.
Stern Howard
Buczinski Stephen C.
Robotic Vision Systems Inc.
LandOfFree
Chromatic optical ranging sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Chromatic optical ranging sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chromatic optical ranging sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1183549