Optics: measuring and testing – Velocity or velocity/height measuring – With light detector
Patent
1991-06-19
1993-05-18
Buczinski, Stephen C.
Optics: measuring and testing
Velocity or velocity/height measuring
With light detector
180169, G01P 336, B60T 716
Patent
active
052125351
ABSTRACT:
A speed measuring apparatus includes a light projecting unit having a light source for emitting light, a projection optical system for projecting the light from the light source onto a relatively moving object and a first polarizer included in a part of the projection optical system for allowing the passage of polarized light from the light source as projected light. A light receiving unit includes a second polarizer allowing the passage of polarized light in a direction at right angles to the direction of polarization of the projected light reflected from the relatively moving object and a spatial filter detector for taking out a predetermined spatial frequency of the light passed through the second polarizer and outputting an electrical signal representing the frequency. The relative speed of the relatively moving object is calculated on the basis of the signal from the spatial filter detector.
REFERENCES:
patent: 3486032 (1969-12-01), Cufflin
patent: 3508066 (1970-04-01), Agar
patent: 4333008 (1982-06-01), Misek
patent: 4470696 (1984-09-01), Ballard
patent: 5038030 (1991-08-01), Hayashi et al.
"Electronics", Ohm Publishing Co., Ltd., Jan. 1984, pp. 73-76.
Kitajima Hiroshi
Miyazaki Hidenori
Buczinski Stephen C.
Omron Corporation
LandOfFree
Spatial filter type speed measuring apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spatial filter type speed measuring apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spatial filter type speed measuring apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-807538