Inspection and repair of tab lifted leads
First Claim
Patent Images
1. An optical video system for viewing at least two distinct surfaces, said surfaces lying in substantially the same plane, which plane intersects a supporting surface which comprises:
- a first collimated source of illumination forward of the surfaces under investigation, the axis of said illumination lying in a plane substantially normal to said surface, said axis at an angle of 45°
to 65°
with reference to the supporting surface;
a second fluorescent source of illumination rearward of the surfaces, the axis of said illumination lying in a plane substantially normal to the surface under investigation, said axis at an angle of 45°
to 65°
with reference to the supporting surface;
a third fiber optic source of illumination forward of the surface under investigation, and its axis at an angle of 20°
to 40°
with reference to both the supporting surface and the plane of the surfaces under investigation, said first, second and third sources defining an area of illumination.
1 Assignment
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Accused Products
Abstract
An optical video system for the inspection and repair of TAB lifted leads. Three distinct light sources are aligned at different angles to illuminate the side of a lead-solder-pad joint. Each of the surfaces of the joint are readily distinguished.
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Citations
21 Claims
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1. An optical video system for viewing at least two distinct surfaces, said surfaces lying in substantially the same plane, which plane intersects a supporting surface which comprises:
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a first collimated source of illumination forward of the surfaces under investigation, the axis of said illumination lying in a plane substantially normal to said surface, said axis at an angle of 45°
to 65°
with reference to the supporting surface;a second fluorescent source of illumination rearward of the surfaces, the axis of said illumination lying in a plane substantially normal to the surface under investigation, said axis at an angle of 45°
to 65°
with reference to the supporting surface;a third fiber optic source of illumination forward of the surface under investigation, and its axis at an angle of 20°
to 40°
with reference to both the supporting surface and the plane of the surfaces under investigation, said first, second and third sources defining an area of illumination. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 17)
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13. A method for viewing at least two distinct surfaces, said surfaces lying in substantially the same plane, which plane intersects the supporting surface on which the distinct surfaces lie, which includes:
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creating a first collimate source of illumination forward of the surface under investigation, the axis of illumination lying in a plane substantially normal to the surface under investigation, said axis at an angle of 25°
to 45°
with reference to the supporting surface;creating a second fluorescent source of illumination rearward of the surfaces, the axis of illumination lying in a plane substantially normal to the surface under investigation, said axis at an angle of 45°
to 65°
;creating a third fiber optic source of illumination forward of the surfaces under investigation, its axis at an angle of 20°
to 40°
with reference to both the supporting surface and the surface under investigation;distinguishing between first and second surfaces by; aligning the axes of said sources of illumination to define an area of illumination on the surfaces under investigation; and viewing the illuminated surfaces. - View Dependent Claims (14, 15, 16, 18, 19, 21)
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20. rotating the joint 180°
- about a z axis normal to the support surface and which passes through the point P; and
viewing the surfaces of the other side of the joint.
- about a z axis normal to the support surface and which passes through the point P; and
Specification