Measurement of form of spherical and near-spherical optical...

Geometrical instruments – Gauge – Lens

Reexamination Certificate

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C033S503000, C033S551000, C033S555000

Reexamination Certificate

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07140119

ABSTRACT:
Rotational motions between a displacement-measuring probe and an optical test surface define a spherical or near spherical datum surface against which measurements of the probe are taken. The probe has a measurement axis that is maintained substantially normal to the optical test surface during the course of measurement.

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