Using special visibility materials proximate candidate...

Details Using special visibility materials proximate candidate... Using special visibility materials proximate candidate...

2007-07-24

2007-07-24

Ngo, Hung V. (Department: 2831)

Optics: measuring and testing

Inspection of flaws or impurities

Transparent or translucent material

C250S459100, C250S461100

Reexamination Certificate

active

10939754

ABSTRACT:
The invention in one implementation encompasses the use of special visibility material to enhance the ability of computer-aided visual inspection machines to detect errors in placement or orientation of components mounted to a printed circuit board. In another implementation, the visibility of labels to a repair technician is enhanced by using indicia formed using special visibility material disposed in a housing which substantially restricts the penetration outside ambient light into the interior of the housing.

REFERENCES:
patent: 4400618 (1983-08-01), Bupp et al.
patent: 4697923 (1987-10-01), Jones et al.
patent: 4963752 (1990-10-01), Landis
patent: 5805533 (1998-09-01), Daigle et al.
patent: 6187417 (2001-02-01), Farquhar
patent: 6337375 (2002-01-01), Johansson
patent: 6698085 (2004-03-01), Stevenson et al.
GB Patent Office, Patents Act 1977: Search Report under Section 17(5), Nov. 25, 2005, 4 pages.

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