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Optical Engineering

Optical profilometer with a stand-alone scanning sensor head
Author(s): Alessandro Bartoli; Pasquale Poggi; Franco Quercioli; Bruno Tiribilli; Massimo Vassalli
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Paper Abstract

The use of compact disc (CD) pickups as distance sensors in optical profilometry is a well-established practice. The novelty of our device is the use of the built-in objective lens-tracking actuator of the pickup to perform a 1-D beam scanning of the sample. The profilometer prototype presented in this paper is made up of a standalone sensor-actuator optical head that can be easily positioned on samples of complex shapes with every orientation and can be operated by a remote control system. When 2-D scanning is unnecessary or even impossible, as for surface quality inspection of bulky mechanical pieces, a device that uses a CD pickup as both the sensor and the actuator is cheaper, faster, lighter, more compact, and more versatile than standard object-scanning setups that use xy translation stages. A lateral scan range of 800 ?m and a vertical scan range of 160 ?m are achieved.

Paper Details

Date Published: 1 December 2001
PDF: 8 pages
Opt. Eng. 40(12) doi: 10.1117/1.1417494
Published in: Optical Engineering Volume 40, Issue 12
Show Author Affiliations
Alessandro Bartoli, Ist Naz di Ottica Applicata (Italy)
Pasquale Poggi, Istituto Nazionale di Ottica (Italy)
Franco Quercioli, Istituto Nazionale di Ottica (Italy)
Bruno Tiribilli, Officine Galileo (Italy)
Massimo Vassalli, Istituo Nazionale di Ottica Applicata (Italy)

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