The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 06, 2004
Filed:
Jan. 10, 2001
Roger W. Schmitz, Hutchinson, MN (US);
Senthil Balasubramaniam, Chaska, MN (US);
Roger S. Posusta, Silver Lake, MN (US);
Hutchinson Technology Incorporated, Hutchinson, MN (US);
Abstract
A measurement device includes a laser or other light source for producing a light beam, and optics that split the light beam into a plurality of differentiable beam portions, such as a plurality of polarized beams. The optics also direct the differentiable beam portions toward a target to be measured. The measurement device also includes a detection component, such as a plurality of position sensitive detectors, positioned to intercept images created by simultaneous incidence of the differentiable beam portions on the target. The data collected by the detection component is used to calculate measurement data related to the target. When used with a head suspension target, displacement of various regions of the head suspension may be measured relative to a reference region, such as the mounting region of the head suspension.