摘要:
Method of shaping an ophthalmic eyeglass lens presenting two main optical working faces and including firstly a substrate made of a first material and presenting two main faces corresponding to the two main faces of the lens, and secondly at least one coating film made of a material distinct from that of the substrate, the coating film being previously secured on at least one of the main faces of the substrate, includes: cutting the lens by machining with a first tool over at least the thickness of the previously secured coating film, to define internally a working central portion of the coating film that presents a reduced outline; trimming the edge face of the substrate along the desired outline by machining with a second distinct tool, without machining the working central portion; and finishing the edge face of the substrate without machining the working central portion.
摘要:
Method of shaping an ophthalmic eyeglass lens presenting two main optical working faces and including firstly a substrate made of a first material and presenting two main faces corresponding to the two main faces of the lens, and secondly at least one coating film made of a material distinct from that of the substrate, the coating film being previously secured on at least one of the main faces of the substrate, includes: cutting the lens by machining with a first tool over at least the thickness of the previously secured coating film, to define internally a working central portion of the coating film that presents a reduced outline; trimming the edge face of the substrate along the desired outline by machining with a second distinct tool, without machining the working central portion; and finishing the edge face of the substrate without machining the working central portion.
摘要:
A device for applying a coating film (63) on a face of a lens, the film previously being placed on the face concerned of the lens, includes a seat (40) suitable for receiving the lens, a membrane (62) including a peripheral fixing portion (62A) and an inflatable portion (62B), and an inflater element (61) for inflating the membrane towards the lens seat. The inflater element include a first plate (66) and a second plate (65) with the membrane (62) placed between them, the first plate presenting as a setback a pressurization chamber (80) connected to a source (93) of compressed gas, and the second plate presenting a protrusion opening (71), the two plates being mounted to move relative to each other between an open configuration and a closed configuration.
摘要:
A device for applying a coating film (63) on a face of a lens, the film previously being placed on the face concerned of the lens, includes a seat (40) suitable for receiving the lens, a membrane (62) including a peripheral fixing portion (62A) and an inflatable portion (62B), and an inflater element (61) for inflating the membrane towards the lens seat. The inflater element include a first plate (66) and a second plate (65) with the membrane (62) placed between them, the first plate presenting as a setback a pressurization chamber (80) connected to a source (93) of compressed gas, and the second plate presenting a protrusion opening (71), the two plates being mounted to move relative to each other between an open configuration and a closed configuration.
摘要:
Described is a method and a device for applying a coating film (63) on a face (108) of an optical element (100), including placing the coating on the face of the lens with an adhesive interface (46) placed between the coating and the lens, and inflating a membrane (62) towards the lens in order to press the coating against the lens. Provision is made to adjust the position of the lens relative to the membrane, the adjustment being distinct from the inflation of the membrane.
摘要:
Described is a method and a device for applying a coating film (63) on a face (108) of an optical element (100), including placing the coating on the face of the lens with an adhesive interface (46) placed between the coating and the lens, and inflating a membrane (62) towards the lens in order to press the coating against the lens. Provision is made to adjust the position of the lens relative to the membrane, the adjustment being distinct from the inflation of the membrane.
摘要:
A method of shaping an ophthalmic lens includes machining the edge face of the lens by at least one rotary tool having an axis of rotation movable relative to the lens axis, both in rotation and radial and axial translation. These movements are controlled so that the edge face of the lens presents a profiled shape with an engagement ridge suitable for engaging in a bezel of eyeglasses and first and second margins. Given first and second longitudinal curves of the first and second margins, respectively, the edge face of the lens is machined in such a manner that, at each axial section of the lens, the traces in the axial section of the first and second longitudinal curves present first and second distances from the axis of the lens, with the difference (rs) therebetween being a function of the position of the plane of the axial section under consideration.
摘要:
A method of shaping an ophthalmic lens includes machining the edge face of the lens by at least one rotary tool having an axis of rotation movable relative to the lens axis, both in rotation and radial and axial translation. These movements are controlled so that the edge face of the lens presents a profiled shape with an engagement ridge suitable for engaging in a bezel of eyeglasses and first and second margins. Given first and second longitudinal curves of the first and second margins, respectively, the edge face of the lens is machined in such a manner that, at each axial section of the lens, the traces in the axial section of the first and second longitudinal curves present first and second distances from the axis of the lens, with the difference (rs) therebetween being a function of the position of the plane of the axial section under consideration.
摘要:
A method for determining at least one behavioral, postural or geometric-morphological characteristic of a person wearing spectacles, the method includes the steps of: a) illuminating the wearer's head using an infrared light source (220, 230, 240), b) acquiring an image of the wearer's head using an infrared image sensor (210); c) in the image, locating reflections from the infrared light surface, reflected by the two lenses of the spectacles; and d) using a computation unit (250) to deduce the required characteristic as a function of the positions of the reflections in the image.
摘要:
A method for evaluating at least one individualized fitting parameter for a lens mounted in a spectacle frame. The method includes the following steps: (a) evaluating a postural parameter of the wearer of the spectacle frame in a vision posture, the postural parameter being selected from a plurality of preset postural parameters; (b) evaluating a second pantoscopic angle formed between, on the one hand, the projection of the temple of the frame onto the sagittal plane of the wearer, and on the other hand, the trace, on the same plane, of the front side of the frame; and (c) evaluating the first pantoscopic angle as a function of, on the one hand, the second pantoscopic angle evaluated in step (b), and on the other hand, the postural parameter of the wearer evaluated in step (a).