Arc illumination apparatus and method

Details Arc illumination apparatus and method Arc illumination apparatus and method

1999-04-07

2000-09-12

Font, Frank G.

Optics: measuring and testing

Inspection of flaws or impurities

356375, 25055934, 2505594, 25055946, 348 87, 348126, 348131, 382146, G01N 2100, G01B 1114, H04N 718, H04N 947

Patent

active

061185248

ABSTRACT:
An illumination apparatus and method illuminates one or more reflective elements, such as solder balls on an electronic component or other protruding surfaces or objects. The illumination apparatus includes one or more arc shaped or arc shape arranged light sources that provides a substantially even illumination across the one or more reflective elements. An illumination detection device detects light beams reflecting off of the illuminated reflective elements for forming a reflected image. A method of processing the reflected image includes locating one or more points on each reflected image element representing an illuminated reflective element. The points on the reflected image elements are used to located the pattern of the reflected image elements and/or to fit an outline around each image element corresponding to a known percentage of the true dimensions of each solder ball or other reflective element. The inspection system and method thereby determines various characteristics such as the absence/presence, location, pitch, size and shape of each reflective element.

REFERENCES:
patent: 4028728 (1977-06-01), Sharp
patent: 4677473 (1987-06-01), Okamoto et al.
patent: 4688935 (1987-08-01), Barnes et al.
patent: 4688939 (1987-08-01), Ray
patent: 4695157 (1987-09-01), Schoenbaum et al.
patent: 4697076 (1987-09-01), Yoshida
patent: 4972093 (1990-11-01), Cochran et al.
patent: 4988202 (1991-01-01), Nayar et al.
patent: 5023916 (1991-06-01), Breu
patent: 5030008 (1991-07-01), Scott et al.
patent: 5039868 (1991-08-01), Kobayaski et al.
patent: 5051872 (1991-09-01), Anderson
patent: 5058178 (1991-10-01), Ray
patent: 5064291 (1991-11-01), Reiser
patent: 5072127 (1991-12-01), Cochran et al.
patent: 5097516 (1992-03-01), Amir
patent: 5118193 (1992-06-01), Brown et al.
patent: 5127727 (1992-07-01), Arnold et al.
patent: 5137362 (1992-08-01), LeBeau
patent: 5166985 (1992-11-01), Takagi et al.
patent: 5245671 (1993-09-01), Kobayashi et al.
patent: 5247344 (1993-09-01), Doan
patent: 5257714 (1993-11-01), Beers et al.
patent: 5267217 (1993-11-01), Tokura et al.
patent: 5302836 (1994-04-01), Siu
patent: 5394246 (1995-02-01), Sugawara
patent: 5406372 (1995-04-01), Vodanovic et al.
patent: 5418879 (1995-05-01), Kalnajs et al.
patent: 5420689 (1995-05-01), Siu
patent: 5424838 (1995-06-01), Siu
patent: 5440391 (1995-08-01), Smeyers et al.
patent: 5461417 (1995-10-01), White et al.
patent: 5495424 (1996-02-01), Tokura
patent: 5519496 (1996-05-01), Borgert et al.
patent: 5533146 (1996-07-01), Iwai
patent: 5539485 (1996-07-01), White
patent: 5574801 (1996-11-01), Collet-Beillon
patent: 5581632 (1996-12-01), Koljonen et al.
patent: 5598345 (1997-01-01), Tokura
patent: 5604550 (1997-02-01), White

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