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21. 发明申请

WO1997000155A1 METHOD AND APPARATUS FOR OPTICAL POLISHING 审中-公开
标题翻译：光学抛光的方法和装置
公开(公告)号：WO1997000155A1
公开(公告)日：1997-01-03
申请号：PCT/GB1996001459
申请日：1996-06-17
申请人： OPTICAL GENERICS LIMITED , WALKER, David, Douglas , BINGHAM, Richard, George , KIM, Sug-Whan , PUTTICK, Keith, Ernest
发明人： OPTICAL GENERICS LIMITED
IPC分类号： B24B13/015
CPC分类号： B24D13/147 , B24B13/015 , B24B41/04
摘要： A lapping tool for localised optical polishing of a workpiece, the tool having a flexible working surface and being characterised by means for selectively varying the pressure applied, in use, on the workpiece by different regions of the tool working surface whereby to vary the effective area of contact with the workpiece. A method of optical polishing and optical workpiece using a lapping tool whose maximum working surface area is substantially smaller than the workpiece, comprising determining the path to be travelled by the tool across the workpiece, and determining the pressure and effective area of contact of the tool on the workpiece, in order to achieve the next stage of polishing, and then driving the tool over that path while dynamically varying the said applied pressure and effective contact area. Apparatus for guiding a body, such as an optical polishing tool, over a generally flat structure, such as an optical workpiece, comprising a three-dimensional drive mechanism for the controlled movement of the body across the surface of the structure, and a pivoted linkage linking the drive mechansim to the body such as to constrain the body to pivotal motion about a virtual pivot point which is fixed relative to the drive mechanism and is located at the interace between the body and the workpiece.
摘要翻译：一种用于对工件进行局部光学抛光的研磨工具，该工具具有柔性工作表面，并且其特征在于用于通过工具工作表面的不同区域选择性地改变在使用中施加在工件上的压力的装置，从而改变有效面积与工件接触。一种使用研磨工具的光学抛光和光学工件的方法，其最大工作表面积基本上小于工件，包括确定工具在工件上行进的路径，以及确定工具的压力和有效接触面积在工件上，以便实现下一阶段的抛光，然后在该路径上驱动工具，同时动态地改变所施加的压力和有效的接触面积。用于将主体（例如光学抛光工具）引导到大致平坦的结构（例如光学工件）上的装置，包括用于主体横过结构表面受控运动的三维驱动机构，以及枢轴连杆将驱动机构连接到主体，以便围绕相对于驱动机构固定并且位于主体和工件之间的间隔的虚拟枢轴点将本体约束为枢转运动。

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