Machine-vision illumination system and method for delineating a

Television – Camera – system and detail – With object or scene illumination

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

348131, 348132, 359739, 362244, 362248, 235462, H04N 718, H04N 947, H04N 5222

Patent

active

057451761

ABSTRACT:
The present invention takes advantage of the efficiency of high-brightness red, infra-red, or other color LEDs arranged in a single row, the properties inherent to a focusing element such as a cylindrical lens, as well as the advantages of having a straight-edged diaphragm and a light-absorbing enclosure to produce an illumination source for machine-vision systems. The illumination source exhibits multi-directional properties on one side of an imaginary plane defined by the positions of the row of LEDs, the straight-edged diaphragm, and the focusing element, and minimize light cast on the other side of the plane. The present invention provides a compact light line generator which has no shadowing or secondary lines. The present invention also provides a method for measuring the height of a raised surface. The present invention provides a method and apparatus which provide an illumination source for illuminating an object in a machine-vision system, and includes a light source emitting light from a plurality of points, the points being on a straight line, a focusing element, the focusing element focusing light from the light source in one dimension to a focal line, wherein the focusing element is separated from the straight line by a distance sufficient to focus rays from the plurality of points into the focal line, and wherein there is a light path from the straight line to the focusing element and then to the focal line, and a first diaphragm located in the light path and defining a sharp edge in the rays. This embodiment provides a light which has a sharply defined virtual surface which separates lighted areas from areas not lit, and within the lighted areas, provides light from multiple directions to reduce shadowing.

REFERENCES:
patent: 3663752 (1972-05-01), Froschle
patent: 4743773 (1988-05-01), Katana et al.
patent: 4882498 (1989-11-01), Cochran et al.
patent: 4972093 (1990-11-01), Cochran et al.
patent: 5010412 (1991-04-01), Garriss
patent: 5051825 (1991-09-01), Cochran et al.
patent: 5072127 (1991-12-01), Cochran et al.
patent: 5172005 (1992-12-01), Cochran et al.
patent: 5354977 (1994-10-01), Roustaei
patent: 5468950 (1995-11-01), Hanson
patent: 5604550 (1997-02-01), White
Hewlett Packard OptoElectronics Designer's Catalog, Technical Data entitled "High power AllnGaP Amber and Reddish-Orange Lamps," pp. 3-24 through 3-29, 1993.
Edmund Scientific Company 1993 Annual Reference Catalog, "Cylinder Lenses (CYL)"; catalog pp.47.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Machine-vision illumination system and method for delineating a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Machine-vision illumination system and method for delineating a , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Machine-vision illumination system and method for delineating a will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1537412

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.