摘要:
A method of shaping an optical lens (100) includes at least one operation of edging along a desired outline that includes cutting through the material of the lens (100) includes a cutting-out tool (637). Cutting out includes a plurality of passes, each performed along the desired outline as a pass that is axially shallow.
摘要:
The present invention relates to a device and to a method for shaping an optical lens. According to the invention, a selection is provided between either a first tool (50) for machining the edge face of the lens, and a cutter tool (637) for cutting through the material of the lens, for the purpose of performing at least one given shaping operation. The invention also provides a method of shaping an optical lens coated in a treatment with low surface energy, the method including cutting through the material of the lens.
摘要:
The present invention relates to a device and to a method for shaping an optical lens. According to the invention, a selection is provided between either a first tool (50) for machining the edge face of the lens, and a cutter tool (637) for cutting through the material of the lens, for the purpose of performing at least one given shaping operation. The invention also provides a method of shaping an optical lens coated in a treatment with low surface energy, the method including cutting through the material of the lens.
摘要:
The method of shaping an optical lens (100) comprises at least one operation of edging along a desired outline that includes cutting through the material of the lens (100) by means of a cutting-out tool (637). Cutting out comprises a plurality of passes, each performed along the desired outline as a pass that is axially shallow.
摘要:
The machine includes: elements for supporting the lens and for driving it in rotation about a first axis of rotation, the rotation of the lens being driven by first driver element, a tool-carrier mounted to turn about a second axis of rotation, turning of the tool-carrier being driven by second driver element, a plurality of working tools mounted on the tool-carrier to rotate about tool axes, with at least two of the tools including tools for shaping the periphery of the lens for shaping having distinct tool axes, third driver element for driving relative spacing movements between the first axis of rotation and the second axis of rotation, swivel elements for enabling the tool-carrier to be pivoted relative to the first axis of rotation about a third axis of rotation that extends substantially transversely to the first axis of rotation.
摘要:
A method and device for edging an ophthalmic lens, includes turning the lens about a first axis of rotation and working on the edge face of the lens with a beveling grindwheel or cutter having a beveling groove or chamfer and mounted to rotate about a second axis of rotation. While machining the edge face of the lens with the beveling grindwheel or cutter, the first and second axis of rotation are moved dynamically relative to each other as a function of the angle of rotation of the lens about the first axis of rotation, in such a manner that during machining of each portion of the edge face of the lens, the tangent to the curve of the working portion of the beveling groove or chamfer is substantially parallel to the tangent to the curve of the bevel desired on the portion of the edge face.
摘要:
A grinding machine for grinding eyeglass lenses includes at least one grinding wheel rotatably mounted on a chassis. A carriage is pivoted to the chassis to pivot about an axis parallel to the rotation axis of the grinding wheel. A support spindle is rotatably mounted on the carriage to rotate about an axis also parallel to the rotation axis of the grinding wheel and which is adapted to receive axially the lens to be ground and a template. A feeler in vertical alignment with the template is mounted on the chassis so that it is movable transversely relative to the pivot axis of the carriage. The feeler comprises a rigid pad and a tactile sensor appropriately attached to the rigid pad, at the surface thereof.
摘要:
A method of working the periphery of an ophthalmic lens (L), the periphery of the lens possessing an edge face (C) and the method including edging the edge face of the lens by machining with a first grindwheel (31) mounted to rotate about an axis of rotation (A4). According to the invention, during the edging, in addition to being free to rotate about the axis of rotation, the first grindwheel possesses two degrees of freedom to move in tilting about two distinct pivot directions that are substantially transverse to its axis of rotation.
摘要:
An imaging device includes an image acquisition device to which there corresponds an imaging axis and a viewing screen to which there corresponds an observation axis and two units hinged together in the manner of a pendulum about a horizontal pivot axis at the top. One of these units is an imaging unit that includes the image acquisition device and to which the orientation of the corresponding imaging axis is tied. The other one is an observation unit which includes the viewing screen and to which the orientation of the corresponding observation axis is tied. The center of gravity of the imaging unit is below the pivot axis. There is preferably a detector responsive to the position of the observation unit. Applications include acquisition by an optician of an image of a person wearing an eyeglass frame to be fitted with lenses.