Method and apparatus for distinguishing materials

Details Method and apparatus for distinguishing materials Method and apparatus for distinguishing materials

2006-05-23

2006-05-23

Porta, David (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

C250S339100, C250S341800

Reexamination Certificate

active

07049596

ABSTRACT:
An apparatus and method for optically detecting whether a substance is present at an inspection site on a base material based on light reflected from the inspection site. A light module generates light of a first wavelength and light of a second wavelength. A first optical transmission medium directs the light of the first wavelength and the light of the second wavelength to the inspection site. A photodetector receives light reflected from the inspection site and generates a reflection signal corresponding to the reflected light. A second optical transmission medium directs the reflected light from the inspection site to the photodetector. A control module has an input for receiving the reflection signal. Responsive to the reflection signal, the control module generates a first inspection site absorption value corresponding to absorption of the light of the first wavelength that was directed at the inspection site and a second inspection site absorption value corresponding to absorption of the light of the second wavelength that was directed at the inspection site. The control module generates an output signal indicating whether the substance is present at the inspection site responsive to the first and second inspection site absorption values.

REFERENCES:
patent: 3980568 (1976-09-01), Pitchford et al.
patent: 4197457 (1980-04-01), Cheo
patent: 4359638 (1982-11-01), Allport
patent: 4808824 (1989-02-01), Sinnar
patent: 4945250 (1990-07-01), Fantone et al.
patent: 5106387 (1992-04-01), Cothren, Jr. et al.
patent: 5406082 (1995-04-01), Pearson et al.
patent: 6040198 (2000-03-01), Komiya et al.
patent: 6052056 (2000-04-01), Burns et al.
patent: 6239436 (2001-05-01), Parker et al.
patent: 6504900 (2003-01-01), Kondo et al.
patent: 2002/0001364 (2002-01-01), Opsal et al.
patent: 2002/0093651 (2002-07-01), Roe
patent: 2002/0169379 (2002-11-01), Bostrom et al.
patent: 2005/0163282 (2005-07-01), Zerle
patent: 2005/0190882 (2005-09-01), McGuire
patent: 1048265 (2000-11-01), None
C. Scholz et al., “DIe Knochenzemententfemung mit dem Laser (Bone Cement Removal with the Laser)”, Biomed. Technik 36:5 (1991), 120-128.

Affiliated with

Also associated with

Rating

Method and apparatus for distinguishing materials does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for distinguishing materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for distinguishing materials will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3650048