DEVICE AND METHOD FOR MEASURING THE SHAPE OF A MIRROR OR OF A SPECULAR SURFACE

• Main Authors: PICHON, MICHEL, ETIENNE, ROMAIN, MARLIER, ALEXANDRE
• Format: Patent
• Language: English; French
• Published: 22.03.2012
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The present invention relates to a device for measuring the shape of a surface. Said device comprises a first test pattern (4) having a unidirectional design illuminated by a first lighting means (7), which enables the shape to be measured in a first direction, and a second test pattern (9) having a unidirectional design perpendicular to the design of the first test pattern, which enables the shape to be measured in a second direction perpendicular to the first direction. The second test pattern is generated in the same plane as the first test pattern by an additional lighting means (8) which is only illuminated when the first lighting means is switched off. La présente invention concerne un dispositif de mesure de forme d'une surface. Il comporte une première mire (4) à motif monodirectionnel illuminée par des premiers moyens d'éclairage (7), ce qui permet de mesurer la forme selon une première direction, et une seconde mire (9)à motif monodirectionnel perpendiculaire au motif de la première mire permettant de mesurer la forme selon une seconde direction perpendiculaire à la première. La seconde mire est engendrée dans le même plan que la première mire par des moyens supplémentaires d'éclairage (8) qui sont uniquement allumés lorsque les premiers moyens d'éclairage sont éteints.