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1. 发明申请

WO1994009946A1 LENS BLOCKING AND CONSTANT CENTER THICKNESS SYSTEM 审中-公开
标题翻译：镜头闭锁和恒定中心厚度系统
公开(公告)号：WO1994009946A1
公开(公告)日：1994-05-11
申请号：PCT/US1993010011
申请日：1993-10-20
申请人： D.A.C., INC. , VERNON, Edward, W.
发明人： D.A.C., INC.
IPC分类号： B24B41/06
CPC分类号： B24B13/005
摘要： A base lens blocking system comprises a blocking member (200) formed of a flange (202) with a rearward directed shank (204) received in a collet (232) of a spindle (236), preferably, a dead length, recessed collet. The front surface of the flange contains a lens blank engaging region (208) which can be recessed. The lens blank is applied to the flat, front surface of the flange by means of a disc of adhesive tape (307), either a thermoplastic adhesive or a double-sided pressure sensitive adhesive tape or a very thin film of wax applied to a heated surface of the flange under a pressure from 5-20 pounds. A batch of blocked lens blanks can be cut with base curves and processed to finished lenses without measuring the center thickness of the base curves of each lens.
摘要翻译：基镜透镜遮挡系统包括由凸缘（202）形成的阻挡构件（200），其具有容纳在心轴（236）的夹头（232）中的向后指向的柄部（204），优选地，死角凹陷的夹头。凸缘的前表面包含可以凹进的透镜毛坯接合区域（208）。透镜毛坯通过粘合带（307）的盘，即热塑性粘合剂或双面压敏粘合带或非常薄的蜡施加到法兰的平坦的前表面上，该薄膜施加到加热的表面的法兰在5-20磅的压力下。可以用基本曲线切割一批封闭的镜片毛坯，并且在不测量每个镜片的基础曲线的中心厚度的情况下处理成完成的镜片。

2. 发明申请

WO1995011108A1 FRONT CURVE BLOCKING SYSTEM 审中-公开
标题翻译：前曲线阻塞系统
公开(公告)号：WO1995011108A1
公开(公告)日：1995-04-27
申请号：PCT/US1994011338
申请日：1994-10-06
申请人： D.A.C., INC. , VERNON, Edward, W.
发明人： D.A.C., INC.
IPC分类号： B24B03/00
CPC分类号： B24B13/005
摘要： A blocking system for supporting a lens blank having a posterior surface and a reference surface includes a block having a forward extension with a cylindrical side wall and a front surface complementary to the posterior surface of the lens blank. A disposable, annular collar (14) of synthetic resin surrounds the cylindrical extension. The top of the collar abuts the reference surface of the blank to determine the location of the posterior surface during cutting of the lens. The cylindrical extension may be separable from the blocking member such as a plastic cap (102) having a shank (104) frictionally received in a cavity (118) in the blocking member or a plastic cap (200) adhered to the end (202) of the cylindrical extension. The top edge of the collar may contain slots to remove excess adhesive wax from between the posterior surface of the blank and the front surface of the block.
摘要翻译：用于支撑具有后表面和参考表面的透镜毛坯的遮挡系统包括具有与圆柱形侧壁和与透镜毛坯的后表面互补的前表面的向前延伸的块。合成树脂的一次性环形套环（14）围绕圆柱形延伸部分。衣领的顶部邻接坯料的参考表面，以确定在切割镜片期间后表面的位置。圆柱形延伸部可以与阻挡构件分离，例如塑料盖（102），其具有摩擦地容纳在阻挡构件中的空腔（118）中的柄（104）或粘附到端部（202）的塑料帽（200）的圆柱形延伸部。套环的顶部边缘可以包含槽，以从坯料的后表面和块的前表面之间移除多余的粘合剂蜡。

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