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:
Nov. 17, 1998
Filed:
Jun. 26, 1997
Michael Bray, Olivet, FR;
Compagnie Industrielle Des Lasers Cilas, Paris, FR;
Abstract
The present invention relates to a device for determining the shape of the wave surface reflected by a substantially plane component (P), which includes a support (S) for the component (P), an interferometer (I), means for moving the support (S), and a control unit which determines, from the measurements by the interferometer (I), the shape of said wave surface. According to the invention, the device additionally includes a swivelling mirror (M1), which directs the measurement beam (FM) of the interferometer (I) orthogonally onto a surface (2) of the component (P), and an optical sensor (CO), which determines the position of the image of a light point (PO) of the measurement beam (FM), the orientation of the mirror (M1) being controlled in such a way as to bring the light point (PO) back to a reference position automatically.