Optical comparator using light- emitting diode light sources
AssigneeQuality Vision International, Inc.
InventorsStephanie M. Bloch, Donald Boerschlein
Life of this patent
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Abstract
The invention provides a source of illumination comprising a base having mounted thereon at least one light-emitting diode light source, a parabolic reflector mounted on the base and surrounding the at least one light-emitting diode, and a transmissive diffuser at the narrow end of the parabolic reflector.
Claims26
An optical comparator comprising:
- a display screen;
- a stage for holding and moving an object
- a light source including one or more solid state illumination sources;
- a diffuser disposed between the solid state illumination sources and the stage, and an inverted, truncated, generally-conical reflector surrounding the illumination sources and having the diffuser disposed at its narrow end.
- optics disposed between the stage and the display for imaging the object on the screen.
A source of illumination comprising a base having mounted thereon at least one light-emitting diode light source, a parabolic reflector mounted on the base, and surrounding the at least one light-emitting diode, and a diffuser closing the narrow end of the parabolic reflector.
A comparator comprising at least one source of illumination comprising a base having mounted thereon at least one light-emitting diode light source, a parabolic reflector mounted on the base, and surrounding the at least one light-emitting diode, and a diffuser closing the narrow end of the parabolic reflector.
Dependencies are inferred from the claim text.