Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1989-11-20
1990-11-20
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250223R, G01N 2188
Patent
active
049720937
ABSTRACT:
An engineered lighting system for use in an inspection system is comprised of an array of light emitting diodes. A specimen is brought into the viewing area, and a current pulse is provided to the diodes of the array to selectively flash all or a portion of the diodes of the array. Reflected light from the specimen is sensed and a digitized image is generated therefrom. An illumination level of the digitized image is adjustable, in whole or in part, by varying the effective lighting intensity of one or more of the diodes of the array during a flash period. The digitized image of the specimen is compared to data indicative of acceptability of the specimen, and acceptance or rejection of the specimen is decided on a basis of a comparison therebetween.
REFERENCES:
patent: 3222524 (1965-12-01), Lee
patent: 4141566 (1983-11-01), Peyton et al.
patent: 4165277 (1979-08-01), Frewin
patent: 4217491 (1980-08-01), Dufford, Jr. et al.
patent: 4271408 (1981-06-01), Teshima et al.
patent: 4293219 (1981-10-01), Ducloux
patent: 4305658 (1981-12-01), Yoshida
patent: 4344146 (1982-08-01), Davis, Jr. et al.
patent: 4364088 (1982-12-01), Kubota
patent: 4367405 (1983-01-01), Ford
patent: 4379233 (1983-04-01), Rosenthal
patent: 4380025 (1983-04-01), Deane
patent: 4385233 (1983-05-01), Lovalenti
patent: 4385318 (1983-05-01), Miller
patent: 4427880 (1984-01-01), Kanade et al.
patent: 4442455 (1984-04-01), Huignard et al.
patent: 4446481 (1984-05-01), Edamatsu et al.
patent: 4486776 (1984-12-01), Yoshida
patent: 4491868 (1985-01-01), Berridge, Jr. et al.
patent: 4509076 (1985-04-01), Yoshida
patent: 4513441 (1985-04-01), Henshaw
patent: 4530036 (1985-07-01), Conti
patent: 4567551 (1986-01-01), Choate
patent: 4581632 (1986-04-01), Davis et al.
patent: 4595289 (1986-06-01), Feldman et al.
patent: 4604648 (1986-08-01), Kley
patent: 4606635 (1986-06-01), Miyazawa et al.
patent: 4677473 (1987-06-01), Okamoto
patent: 4699273 (1987-10-01), Suggi-Liverani et al.
patent: 4731649 (1988-03-01), Chang et al.
patent: 4758084 (1988-07-01), Tokumi et al.
patent: 4764681 (1988-08-01), Michaiski et al.
patent: 4811251 (1989-03-01), Minato
patent: 4843231 (1989-06-01), Caloyannis et al.
patent: 4865447 (1989-09-01), Shay
A. Novini, "Fundamentals of Machine Vision Lighting", Penn Video Inc., Copyright 1985.
Penn Video Inc., "Pulsar Machine Vision Strobes".
A. Novini, "Fundamentals of Strobe Lighting for Machine Vision", Penn Video Inc., Copyright 1987.
G. Wagner, "Combining X-Ray Imaging and Machine Vision", Penn Video Inc., Copyright 1987.
A. Novini, "Fundamentals of Machine Vision Component Selection", Penn Video Inc., Copyright 1984.
Penn Video Inc., "Programmable Logic Controlled Vision".
SME Manufacturing Engineering, Manufacturing Insights: The Video Tape Series for Industrial Management, "Machine Vision, Trends in Technology", Copr. 1985.
Schreiber, Rita R., Quality Control with Vision, Vision MVA/SME's Quarterly on Vision Technology, vol. 2, No. 4 (Oct., 1985).
George, Robert W., High Speed Video Inspection of Caps and Closures, Vision '85 Conference Proceedings, pp. 1-55 through 1-70 (Mar. 25-28, 1985).
Vinarub, E. J. et al., Fiber Optics in Machine Vision, Photonics Spectra, (Jun. 1987).
Austin James R.
Cochran Don W.
Nelms David C.
Pressco Inc.
Shami Khaled
LandOfFree
Inspection lighting system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Inspection lighting system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inspection lighting system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-455540