Patent ID: 8182089

Claim:
An apparatus for determining the orientation of ophthalmic lenses belonging to a frame, said apparatus comprising, on the one hand, a recording device and, on the other hand, a reference-frame unit that can be fitted on a frame while the patient is wearing it, said frame having two receiving half-parts able to receive ophthalmic lenses and a central bridge that links said two half-parts, said two half-parts extending symmetrically to one another relative to said central bridge, said reference-frame unit comprising two independent elements, a first element forming an arch having a central portion marked with a first reference mark and two fixing ends designed to be fitted respectively into the lateral edges of said half-parts to keep said central portion away from said frame, and a second element marked with a second reference mark, fitted onto said frame between the two lateral edges, said recording device comprising a camera pointing at the eyes of said patient from a determined viewing angle in order to record an image of said reference-frame unit fitted onto said frame, said apparatus comprising processing means for assessing, from said image, the relative position of the two reference marks and for providing a value representative of the inclination of said half-parts relative to one another; wherein it also comprises another camera separated vertically from said one camera and pointing at the eyes of said patient from another viewing angle; and in that the two cameras can be used to simultaneously record two images of said reference-frame unit fitted onto said frame from the two viewing angles in order to accurately assess the relative position of the two reference marks and to provide a value representative of the inclination of said half-parts.