US 12,287,534 B2
Spectacle lens edge simulation tool and method for defining a lens shape with said tool
Stefano Sonzogni, Bergamo (IT)
Assigned to MEI S.r.l., Bergamo (IT)
Appl. No. 17/420,773
Filed by MEI S.r.l., Bergamo (IT)
PCT Filed Jan. 9, 2020, PCT No. PCT/EP2020/050412
§ 371(c)(1), (2) Date Jul. 6, 2021,
PCT Pub. No. WO2020/144268, PCT Pub. Date Jul. 16, 2020.
Claims priority of application No. 19151096 (EP), filed on Jan. 10, 2019.
Prior Publication US 2022/0113555 A1, Apr. 14, 2022
Int. Cl. G02C 1/00 (2006.01); G01B 21/20 (2006.01)
CPC G02C 1/10 (2013.01) [G01B 21/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A lens edge simulation tool for measuring the fitment of a lens edge profile with respect to a frame groove profile of a spectacle frame, the lens edge simulation tool having a defined edge profile like a lens edge profile of a lens being machined by a defined edger machine, the defined edge profile comprising a bevel portion protruding towards a protrusion direction (A),
wherein the lens edge simulation tool further comprises a probe integrated in the bevel portion and provided at a distal end tip portion of the bevel portion and being axially moveable with respect to the bevel portion along the protrusion direction between a retracted position in which the probe does not protrude from the defined edge profile and an extension position in which the probe protrudes from the distal end tip portion.