Optics: measuring and testing – Inspection of flaws or impurities – Surface condition
Patent
1997-04-07
2000-07-04
Font, Frank G.
Optics: measuring and testing
Inspection of flaws or impurities
Surface condition
348126, G01N 2100, H04N 718
Patent
active
060846631
ABSTRACT:
A method and apparatus for inspecting a printed circuit board assembly especially with surface mount devices are provided. The method and apparatus include a multiple camera set-up utilizing both color and monochrome images. A very strong white light is employed as the light source. The multiple camera setup includes frontal and oblique looking cameras to examine the printed circuited board assembly from different angles. The strong white light source provides sufficient illumination evan at a small camera aperture hence increasing the depth of field. The method and apparatus are resistant against warpage of the PCB and variations in components' height.
REFERENCES:
patent: 4926452 (1990-05-01), Baker et al.
patent: 4988202 (1991-01-01), Nayar et al.
patent: 5012502 (1991-04-01), Battin et al.
patent: 5039868 (1991-08-01), Kobayashi et al.
patent: 5064291 (1991-11-01), Reiser
patent: 5097492 (1992-03-01), Baker et al.
patent: 5105149 (1992-04-01), Tokura
patent: 5185638 (1993-02-01), Conzola et al.
patent: 5245421 (1993-09-01), Robertson et al.
patent: 5260779 (1993-11-01), Wasserman
patent: 5406372 (1995-04-01), Vodanovic et al.
patent: 5414513 (1995-05-01), Leib
patent: 5517235 (1996-05-01), Wasserman
patent: 5550583 (1996-08-01), Amir et al.
Font Frank G.
Hewlett--Packard Company
Smith Zandra V.
LandOfFree
Method and an apparatus for inspection of a printed circuit boar 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 an apparatus for inspection of a printed circuit boar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and an apparatus for inspection of a printed circuit boar will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1491342