Apparatus and method for scanning products with a light beam...

Details Apparatus and method for scanning products with a light beam... Apparatus and method for scanning products with a light beam...

2005-03-08

2005-03-08

Nguyen, Tu T. (Department: 2877)

Optics: measuring and testing

Inspection of flaws or impurities

Reexamination Certificate

active

06864970

ABSTRACT:
An apparatus for sorting products moving through a detection zone directs a light beam having a given cross sectional area towards a scanning zone through which the products move and are impinged upon by the light beam. A first detector is disposed to receive reflected light back from the products and has a first field of view larger than the light beam cross sectional area, the first detector being sensitive to substantially all of the direct and diffused reflected light from the products and generating a first signal corresponding thereto. A second detector also receives the reflected light and has a second field of view generally equal to the cross sectional area of the light beam. The second detector is sensitive to substantially only the direct reflected light from the products and generates a second signal corresponding thereto. Control circuitry causes a removal mechanism to remove impurities o products from the stream of products based on the signals from the first and second detectors individually or a difference between the signals.

REFERENCES:
patent: 4260062 (1981-04-01), Lockett
patent: 4634881 (1987-01-01), Billion
patent: 4723659 (1988-02-01), Billion
patent: 5109236 (1992-04-01), Watanabe et al.
patent: 5487472 (1996-01-01), Satake et al.
patent: 5591985 (1997-01-01), Tsuji et al.
patent: 5939727 (1999-08-01), Sommer
patent: 6061086 (2000-05-01), Reimer et al.
patent: 9831477 (1998-07-01), None
patent: 9844335 (1998-10-01), None
PCT Search Report, Jan. 16, 2002.

Affiliated with

Also associated with

Rating

Apparatus and method for scanning products with a light beam... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for scanning products with a light beam..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for scanning products with a light beam... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3392017