Light array system and method for illumination of objects imaged by imaging systems

An illumination system and method for providing wide angle illumination to objects to be inspected. The illumination system includes a dome light array having a plurality of rows where each row includes a plurality of lamps arranged in an arc about an imaging area (so that each lamp in the row is ap...

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Bibliographische Detailangaben
Hauptverfasser:	DEYONG MARK R, LEWIN ALVARO D, TAIT ROBERT W
Format:	Patent
Sprache:	eng
Schlagworte:	GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PHYSICS TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS TESTING
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Beschreibung
Zusammenfassung:	An illumination system and method for providing wide angle illumination to objects to be inspected. The illumination system includes a dome light array having a plurality of rows where each row includes a plurality of lamps arranged in an arc about an imaging area (so that each lamp in the row is approximately the same distance from the imaging area) and all of the lamps in a row point to and illuminate the same point within the image area. The illumination system can include an aperture in the top of the dome light array through which a camera can image the object. Positioning each row of lamps in an arc about the image point provides various illumination angles to give a relatively uniform wide angle, yet intense, illumination to enhance automated PWB defect inspection. To further provide illumination, a pair of side panel light arrays having a plurality of lamps can be attached to the sides of the dome light array so that the side lamps provide further vertical illumination on the image area from a horizontal side plane.