Chromatic point sensor optical pen with adjustable range and adjustable stand-off distance

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United States of America Patent

PATENT NO 11415674
APP PUB NO 20210132194A1
SERIAL NO

16669895

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Abstract

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A chromatic point sensor (CPS) optical pen provides a signal usable to measure a distance to a surface, and includes an axial chromatic aberration portion arranged to receive source radiation from an aperture, output it toward the surface as a focused measurement beam having axial chromatic dispersion, receive reflected radiation from the surface and focus it proximate to the aperture. The axial chromatic aberration portion includes a first axially dispersive focusing element that receives the source radiation and focuses it at a first focal region, a second axially dispersive focusing element that receives the radiation from the first focal region and focuses it at a second focal region, and a third axially dispersive focusing element that receives the radiation from the second focal region and outputs the measurement beam. Lengths between the first, second and third axially dispersive focusing elements are adjustable (i.e., resulting in an adjustable range).

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Patent Owner(s)

  • MITUTOYO CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nagornykh, Pavel Ivanovich Kirkland, US 2 0

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