US 12,440,940 B2
Apparatus and method for deblocking a lens
Gunter Schneider, Marburg (DE); Klaus Hofmann, Wehrheim (DE); Thomas Simmer, Biedenkopf-Breidenstein (DE); and Klaus Krämer, Dautphetal-Friedensdorf (DE)
Assigned to SCHNEIDER GMBH & CO. KG, Fronhausen (DE)
Appl. No. 16/487,683
Filed by SCHNEIDER GMBH & CO. KG, Fronhausen (DE)
PCT Filed Feb. 15, 2018, PCT No. PCT/EP2018/053743
§ 371(c)(1), (2) Date Nov. 14, 2019,
PCT Pub. No. WO2018/153764, PCT Pub. Date Aug. 30, 2018.
Claims priority of application No. 10 2017 001 679 (DE), filed on Feb. 22, 2017.
Prior Publication US 2020/0130126 A1, Apr. 30, 2020
Int. Cl. B24B 13/005 (2006.01)
CPC B24B 13/0057 (2013.01) 13 Claims
OG exemplary drawing
 
1. Apparatus for deblocking a lens from a block piece, on which the lens is blocked by means of a block material, wherein a block facing side of the lens, comprising:
a working space,
a first holding device for holding of the lens in the working space and for rotating the lens about an axis of rotation,
a second holding device for holding of the block piece in the working space, and
multiple nozzle devices for dispensing fluid jets in the working space,
further comprising:
first, second and third nozzle devices for respectively generating first, second, and third fluid jets in the working space, wherein the first fluid jet is operable for detaching the lens from the block material, the second fluid jet is operable for removing block material from the block piece, and the third fluid jet is operable for removing at least one of a protective layer or block material from the lens, at least one of the three nozzle devices being arranged at a different angle than the other two nozzles relative to a central axis of the holding devices,
wherein at least one of the holding devices has a rotary motor drive, and
wherein at least one of the first nozzle device, the second nozzle device or the third nozzle device is linearly movable back and forth in a direction parallel to the axis of rotation of the lens.