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US 2003/0116727 A1Published application
Automated optical inspection system with light trap
AssigneeLandrex Technologies Co., Ltd.
InventorJohn B. Burnett
Life of this patent
Estimating the term…
Abstract
An automated optical inspection system with improved accuracy achieved by reducing the negative effects of extraneous light. The system includes a light trap behind a two-way mirror.
Claims18
An optical inspection system comprising:
- a) a beam splitter having at least a first, second and third ports;
- b) a source of illumination connected to a first port of the beam splitter;
- c) a camera connected to a second port of the beam splitter;
- d) an inspection area facing the third port of the beam splitter;
- e) a light trap connected to the beam splitter, the light trap having an angled surface and a cavity.
2 more elements
An optical inspection system comprising:
- a) a source of illumination emitting light in a first direction;
- b) a mirror having a reflective surface positioned at an angle transverse to the first direction;
- c) an inspection area illuminated by light reflected from the mirror;
- d) a camera facing the inspection area;
- and
- e) a means for absorbing extraneous light from the source of illumination passing through the mirror, said means positioned on a side of the mirror opposite the source of illumination.
3 more elements
Dependencies are inferred from the claim text.