Contour reading device, in particular for eyeglass lenses
AssigneeEssilor International (Compagnie Generale d'Optique)
InventorsAlain Chansavoir, Christian Joncour
Life of this patent
Estimating the term…
Abstract
A contour reading device, in particular for eyeglass frames, includes a holding arrangement to support a template at a fixed position and a carriage mobile relative to the holding arrangement and carrying a feeler at the end of a rod. To read off the position of a mounting hole in a peripheral area of the template, the device includes a detector arrangement having at least one component constrained to move with the carriage at a given distance from the axis of the rod carrying the feeler, on the same side as a central area of the holding means. Applications include identifying the mounting holes in "drilled mount" eyeglass lenses.
Claims15
In a contour reading device especially for rimless eyeglass frames, the reading device comprising holding means having a central and a peripheral area and adapted to support a lens contour template at a fixed position and a carriage mobil relative to said holding means and carrying a rod having an axis and a feeler at a distal end of the rod, and means for reading the contour of the template, the invention comprising mounting hole reading means for reading off the position of a lens mounting hole in a peripheral area of the lens contour template, said mounting hole reading means including detector means having a component constrained to move with said carriage spaced from said rod axis at a predetermined distance, said mounting hole reading means being located on the same side of said central area as said holding means.
In a contour reading device especially for rimless eyeglass frames, the reading device comprising holding means having a central and a peripheral area and adapted to support a lens contour template at a fixed position and a carriage mobile relative to said holding means and carrying a rod having an axis and a feeler at a distal end of the rod, means for reading the contour of the template, the invention comprising mounting hole reading means for reading off the position of a lens mounting hole in a peripheral area of the lens contour template, said mounting hole reading means including detector means having a component constrained to move with said carriage spaced from said rod axis at a predetermined distance, said detector means having a detection direction generally parallel to said rod axis, said predetermined distance being equal to the distance between an edge of the template and said mounting hole plus one half the diameter of said rod.
A mounting hole reading device especially for rimless eyeglass frames, comprising holding means having a central and a peripheral area and adapted to support a lens contour template at a fixed position and a carriage mobile relative to said holding means and carrying a rod having an axis and a feeler at a distal end of the rod, the mounting hole reading device including detector means having a component constrained to move with said carriage spaced from said rod axis at a predetermined distance, said detector means having a detection direction generally parallel to said axis of said rod for reading off the position of the mounting hole at said predetermined distance from the template edge.
Dependencies are inferred from the claim text.