Title:
レンズブランクを真空ブロッキングするためのブロッキングピース及び方法
Document Type and Number:
Japanese Patent JP7401694
Kind Code:
B2
Abstract:
The invention relates to a blocking piece (10) for vacuum blocking a lens blank (30). The blocking piece (10) comprises a blank contacting element (12) formed of a rigid fluid-permeable material having an upper surface (12a) for contacting the lens blank (30). The blocking piece (10) further comprises a support element (14) having an upper part (14a) tightly enclosing the blank contacting element (12) on a peripheral surface (12a) of the blank contacting element (12) and a lower part (14b) adapted to engage with a clamping device for clamping the blocking piece (10). The blocking piece (10) is adapted to fixate the lens blank (30) to the upper surface (12a) of the blank contacting element (12) by applying a vacuum within the blocking piece (10) to provide a suction through essentially the entire upper surface (12a) of the blank contacting element (12) to suck the lens blank (30) to the upper surface (12a) of the blank contacting element (12). The invention further relates to a method for blocking a lens blank (30) and a use of an element formed of a rigid fluid-permeable material as a part of a blocking piece (10).
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Inventors:
Gerd Novak
Wit Hartmann
Roland Mandrel
oswin rack
Wit Hartmann
Roland Mandrel
oswin rack
Application Number:
JP2022570588A
Publication Date:
December 19, 2023
Filing Date:
January 27, 2022
Export Citation:
Assignee:
Carl Zeiss Vision International Gamem Beher
International Classes:
B24B13/005; B23B31/02; B23Q3/08; B23Q17/00
Domestic Patent References:
| JP2002086327A | ||||
| JP11048002A | ||||
| JP2003340665A | ||||
| JP2015226945A |
Attorney, Agent or Firm:
Kenji Sugimura
Mitsutsugu Sugimura
Kenichi Shimoji
Mitsutsugu Sugimura
Kenichi Shimoji