METHOD OF SEPARATING EXCESS LENS FORMING MATERIAL FROM A MOLDED OPHTHALMIC LENS, IN PARTICULAR A CONTACT LENS
    3.
    发明申请
    METHOD OF SEPARATING EXCESS LENS FORMING MATERIAL FROM A MOLDED OPHTHALMIC LENS, IN PARTICULAR A CONTACT LENS 有权
    从模制的眼镜镜片,特别是接触镜片中分离出来的镜片表面材料的方法

    公开(公告)号:US20110147959A1

    公开(公告)日:2011-06-23

    申请号:US12969689

    申请日:2010-12-16

    IPC分类号: B29D11/00 B29C45/24

    摘要: There is described a method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens. After polymerization and/or cross-linking of a lens forming material (P) within a mold cavity (4) of a mold (1) comprising female and male mold halves (2, 3) to form an ophthalmic lens non-polymerized and/or non-cross-linked lens forming material is flushed away from the mold halves (2, 3) with a jet of a fluid flushing medium, such as, e.g., water or a solvent or an inert gas. Subsequently the molded lens is dried. In accordance with the invention the flushing is accomplished with the mold halves (2, 3) still in the closed position. There is also described an apparatus for carrying out the method.

    摘要翻译: 描述了从模制的眼科镜片,特别是隐形眼镜分离多余的透镜形成材料的方法。 在透镜形成材料(P)在包含阴模和阴半模(2,3)的模具(1)的模腔(4)内聚合和/或交联以形成未聚合的眼科镜片和/ 或非交联透镜形成材料用流体冲洗介质(例如水或溶剂或惰性气体)的射流冲洗离开半模(2,3)。 随后将模制的透镜干燥。 根据本发明,冲洗是通过半模(2,3)仍处于关闭位置来完成的。 还描述了一种用于执行该方法的装置。

    Method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens
    9.
    发明授权
    Method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens 有权
    从模制的眼科镜片,特别是隐形眼镜分离多余的透镜形成材料的方法

    公开(公告)号:US08673187B2

    公开(公告)日:2014-03-18

    申请号:US12969689

    申请日:2010-12-16

    IPC分类号: B29D11/00

    摘要: There is described a method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens. After polymerization and/or cross-linking of a lens forming material (P) within a mold cavity (4) of a mold (1) comprising female and male mold halves (2, 3) to form an ophthalmic lens non-polymerized and/or non-cross-linked lens forming material is flushed away from the mold halves (2, 3) with a jet of a fluid flushing medium, such as, e.g., water or a solvent or an inert gas. Subsequently the molded lens is dried. In accordance with the invention the flushing is accomplished with the mold halves (2, 3) still in the closed position. There is also described an apparatus for carrying out the method.

    摘要翻译: 描述了从模制的眼科镜片,特别是隐形眼镜分离多余的透镜形成材料的方法。 在透镜形成材料(P)在包含阴模和阴半模(2,3)的模具(1)的模腔(4)内聚合和/或交联以形成未聚合的眼科镜片和/ 或非交联透镜形成材料用流体冲洗介质(例如水或溶剂或惰性气体)的射流冲洗离开半模(2,3)。 随后将模制的透镜干燥。 根据本发明,冲洗是通过半模(2,3)仍处于关闭位置来完成的。 还描述了一种用于执行该方法的装置。

    Process of dosing a starting material for optical lenses
    10.
    发明授权
    Process of dosing a starting material for optical lenses 有权
    给光学透镜的起始材料配料的过程

    公开(公告)号:US07682532B2

    公开(公告)日:2010-03-23

    申请号:US11452537

    申请日:2006-06-14

    IPC分类号: B29D11/00

    摘要: A process of dosing a starting material (SM) for optical lenses, into a female mold half (2), comprises the steps of: positioning a dosing tip (1) at a start position (P2) above the female mold half (2) and close to the edge of or laterally outside that portion (20) defining the lens-shaping surface, creating a continuous flow of starting material (SM) through the dosing tip (1) into the female mold half (2), moving the dosing tip (1) from the start position (P2) towards an end position (P3) in the region of the center of the female mold half (2) once the starting material (SM) has contacted the surface (21) of the female mold half (2) with the dosing tip (1) being in the start position (P2), wherein the continuous flow of starting material (SM) through the dosing tip (1) and the movement of the dosing tip (1) from the start position (P2) to its end position (P3) are controlled such, that a continuous bead (B) of starting material (SM) is deposited on the surface (21) of the female mold half (2) and that the essential part of the overall volume of starting material (SM) dosed into the female mold half (2) is deposited within the female mold half (2) with the dosing tip (1) being in the end position (P3).

    摘要翻译: 将用于光学透镜的起始材料(SM)投入到阴半模(2)中的过程包括以下步骤:将定量给料头(1)定位在阴半模(2)上方的起始位置(P2) 并且靠近限定透镜成形表面的该部分(20)的边缘或侧向外侧,从而通过定量给料头(1)产生连续的起始材料流(SM)进入阴模半部(2) 一旦起始材料(SM)已经接触阴模的表面(21),在阴模半部(2)的中心区域中从尖端(1)开始位置(P2)到端部位置(P3) 一半(2),其中所述给料尖端(1)处于所述起始位置(P2),其中通过所述计量末端(1)的起始材料(SM)的连续流动和所述计量末端(1) 位置(P2)到其结束位置(P3)被控制为使得在母体的表面(21)上沉积起始材料(SM)的连续珠(B) d半(2),并且计量到阴半模(2)中的起始材料(SM)的总体积的主要部分被沉积在阴半模(2)内,而配量尖端(1)处于最终 位置(P3)。