公开(公告)号：US5494474A

公开(公告)日：1996-02-27

申请号：US141850

申请日：1993-10-21

申请人： Edward W. Vernon

发明人： Edward W. Vernon

IPC分类号： B24B13/005

CPC分类号： B24B13/005

摘要： A blocking system for supporting a lens blank having a first cut, posterior surface for a contact lens or an intraocular lens and a reference surface includes a block having a forward extension with a cylindrical side wall and front surface complementary to the posterior surface of the lens blank. A disposable, annular collar of synthetic resin surrounds the cylindrical extension. The top edge of the collar abuts the reference surface of the lens blank and serves to determine the location of the posterior surface during cutting the front surface of the lens. The shaped and/or the cylindrical extension may be separable from the blocking member such as a plastic cap having a shank frictionally received in a cavity in the front surface of the blocking member or a plastic cap adhered to the end of the cylindrical extension.

摘要翻译： 用于支撑具有第一切割，用于隐形眼镜的后表面或眼内透镜和参考表面的透镜毛坯的遮挡系统包括具有向前延伸的块，其具有圆柱形侧壁和与镜片的后表面互补的前表面 空白。 合成树脂的一次性环形环圈围绕圆柱形延伸部分。 轴环的顶部边缘与透镜毛坯的参考表面相接触，用于确定在切割镜片前表面期间后表面的位置。 成形和/或圆柱形延伸部可以与阻挡构件分开，例如塑料盖，其具有摩擦地容纳在阻挡构件的前表面中的空腔中的柄或粘附到圆柱形延伸部的端部的塑料盖。

公开(公告)号：US5474489A

公开(公告)日：1995-12-12

申请号：US185790

申请日：1994-01-24

申请人： Edward W. Vernon

发明人： Edward W. Vernon

IPC分类号： B24B13/005 ,  B24B1/00

CPC分类号： B24B13/005

摘要： A base lens blocking system comprises a blocking member formed of a flange with a rearward directed shank received in a collet of a spindle, preferably, a dead length, recessed collet. The front surface of the flange contains a lens blank engaging region 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, 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： PCT No.PCT / US93 / 10011 Sec。 371日期：1994年1月24日 102（e）日期1994年1月24日PCT提交1993年10月20日PCT公布。 出版物WO94 / 09946 日期：1994年5月11日。一种基镜遮光系统包括由法兰形成的阻挡构件，其具有容纳在心轴的夹头中的向后指向的柄，优选为死长度凹陷的夹头。 凸缘的前表面包含可以凹进的透镜毛坯接合区域。 透镜毛坯通过粘合带盘，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 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。

公开(公告)号：US5205076A

公开(公告)日：1993-04-27

申请号：US676762

申请日：1991-03-27

申请人： Edward W. Vernon ,  Thomas E. Nelson

发明人： Edward W. Vernon ,  Thomas E. Nelson

IPC分类号： B24B13/005

CPC分类号： B24B13/005

摘要： Contact and intra-ocular lenses are manufactured by forming reference surfaces in a lens blank along with the inner base surface for the lens. The partially formed lens blank is then mounted to a blocking member which has complementary surfaces that mate with the reference surface and automatically align the lens blank. The blocking member has a flange that abuts against a spindle in which the member is held during formation of the outer lens surface. The known distance between the abutting surface of this flange and the reference surface on the lens blank allows the outer lens surface to be formed without having to separately measure the thickness of the lens blank, or enter dimensional information into the computer which controls the operation. A recessed collet within the spindle enables the blocking member flange to directly abut the end of the spindle.

摘要翻译： 通过在透镜毛坯中与用于透镜的内基面一起形成参考表面来制造接触和眼内透镜。 然后将部分形成的透镜毛坯安装到阻挡构件，该阻挡构件具有与参考表面配合的互补表面并自动对准透镜毛坯。 阻挡构件具有在形成外透镜表面期间抵靠构件被保持的心轴的凸缘。 该凸缘的抵接表面与透镜毛坯上的参考表面之间的已知距离允许形成外透镜表面，而不必单独测量透镜毛坯的厚度，或者将尺寸信息输入到控制操作的计算机中。 主轴内的一个凹入的夹头使得阻挡构件法兰直接抵靠主轴的端部。