Alternative blocking
AssigneeRodenstock GmbH
InventorKarl Huber
Life of this patent
Estimating the term…
Abstract
Device for blocking a spectacle lens blank that has a finished surface and a machining surface, situated opposite the finished surface, for machining in a machining device. The device includes a receiving component having a convex, planar or concave receiving surface for blocking the finished surface of the spectacle lens blank, wherein the receiving component has an essentially flat counter-surface that is arranged opposite the receiving surface, and wherein the normal of the counter-surface is inclined by 1° to 10° counter to the normal at the middle point of the receiving surface.
Claims18
A device for blocking a spectacle lens blank that has a finished surface and a machining surface, situated opposite the finished surface, for machining in a machining device, with the device comprising:
- a receiver having a convex, planar or concave receiving surface configured to block the finished surface of the spectacle lens blank such that an entire surface of the spectacle lens blank is joined with the receiving surface of the receiver,
- wherein the receiver has an essentially flat counter-surface that is arranged opposite the receiving surface,
- wherein the normal of the counter-surface is inclined by 1° to 10° counter to the normal at the middle point of the receiving surface.
A method for blocking a spectacle lens blank that has a finished surface and a machining surface, situated opposite the finished surface, for machining in a machining device, the method comprising:
- placing an essentially flat counter-surface of a receiver having a convex, planar or concave receiving surface onto an essentially flat and inclined bearing surface of a bearer,
- rotating the receiver relative to the bearer until the normal at the middle point of the receiving surface is inclined to be at an angle (α+β) relative to a machining axis of the bearer, and
- blocking a spectacle lens blank on the receiving surface such that, upon blocking the spectacle lens blank, an entire surface of the spectacle lens blank is joined with the receiving surface of the receiver.
Dependencies are inferred from the claim text.