Optical device for dispersing light

Optics: measuring and testing – By shade or color

Reexamination Certificate

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C356S302000

Reexamination Certificate

active

07894064

ABSTRACT:
An optical device includes an aperture stop that limits an angular extent of light from an illuminated sample. A first lens is positioned between the aperture stop and a detector plane. A second lens is positioned between the first lens and the detector plane and is operable to map light from the aperture stop to the detector plane such that the light is averaged at the detector plane.

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