Efficient hybrid illuminator

Details Efficient hybrid illuminator Efficient hybrid illuminator

1998-07-08

2000-03-28

Spyrou, Cassandra

Illumination

Plural light sources

With modifier

362246, F21V 500

Patent

active

060422475

ABSTRACT:
An illumination system for wire bonding at wire bonding locations which includes an illuminator having a highly light transmissive portion with an end surface and an axial bore extending therethrough and terminating at the end surface. The illuminator includes a first light source for directing light substantially axially through the bore to the end surface and a second light source for directing light substantially axially through the highly light transmissive portion to the end surface. The end surface is preferably a light diffusing surface. The bore is preferably tapered with the taper widening in a direction toward the end surface. The surface of the bore is preferably a light diffusing surface. The bore can alternately include a layer of highly light reflecting material disposed on its surface. The highly light transmissive portion has an outer surface which can include a layer of highly light reflecting material disposed thereon. The system further includes a mirror spaced from the bore in a direction opposed to the end surface and coaxial with the bore for reflecting light passing through the bore and circuitry to digitally store a representation of the reflected light.

REFERENCES:
patent: 4677533 (1987-06-01), McDermott et al.
patent: 5897195 (1999-03-01), Choate

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