Optical waveguides – With optical coupler – Input/output coupler
Patent
1990-08-10
1991-10-22
Sikes, William L.
Optical waveguides
With optical coupler
Input/output coupler
385 15, 385901, G02B 632
Patent
active
050589822
ABSTRACT:
An illumination system particularly useful for inspecting a workpiece by an optic scanner includes darkfield illumination produced mainly by two elongate light sources each having a reflector focussing member and a lenticular lens sheet spreading the light from its light source over its reflector focussing member to produce an approximate image of its light source on the line to be scanned. The illumination system further includes brightfield illumination produced mainly by a third elongate light source mounted laterally of the scanner optic axis, a refractive focussing member, and a further lenticular lens sheet producing an approximate image of the third light source on the line to be scanned. A beamsplitter aligned with the scanner optic axis reflects the light from the refractive focussing member towards the workpiece, and conducts therethrough both the darkfield and brightfield illumination reflected from the workpiece to the optic scanner.
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Orbot Systems Ltd.
Sikes William L.
Wise Robert E.
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