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    • 1. 发明授权
    • Variable focal length lenses which have an arbitrarily shaped periphery
    • 具有任意外形的可变焦距透镜
    • US5668620A
    • 1997-09-16
    • US226344
    • 1994-04-12
    • Stephen KurtinDaniel E. FedeleSaul Epstein
    • Stephen KurtinDaniel E. FedeleSaul Epstein
    • G02B3/14G02C7/08G02C1/00G02B1/06
    • G02B3/14G02C7/085
    • A variable focal length lens whose peripheral shape can be arbitrarily specified, for use in spectacles, which includes a rigid lens to provide the wearer's distance correction, and a liquid-filled lens bounded by a stretched distensible elastomeric membrane to provide a variable near addition. The liquid, which has a fixed volume, is stored in the field of view between the elastomeric membrane and the rigid lens. Variation of the optical power of the liquid filled lens is achieved by displacement of a membrane support to which the outer periphery of the stretched elastomeric membrane is attached. The shape of the distended membrane is kept substantially spherical, despite the circumference of the membrane being non-circular, by making the free area of the membrane circular. This is accomplished by supporting the membrane on a transparent spacing member which has substantially the same refractive index as the liquid and which includes a circular opening which defines the free area of the membrane. A pair of spectacles is comprised of two variable focal length lenses mounted to a frame with an actuator for adjusting their focal lengths mounted on the frame between the lenses. The actuator is mechanically coupled to the lenses by point contacts which prevent twisting couples from being created in the lens structures.
    • 一种可变焦距透镜,其周边形状可以任意规定,用于眼镜,其包括用于提供佩戴者距离校正的刚性透镜,以及由拉伸的可扩张弹性膜限定的液体充满的透镜,以提供可变的近似加法。 具有固定体积的液体被存储在弹性膜和刚性透镜之间的视野中。 充满液体的透镜的光焦度的变化通过使被拉伸的弹性体膜的外周附接到的膜支架的位移来实现。 扩张膜的形状保持基本上是球形,尽管膜的周长是非圆形的,通过使膜的自由面积为圆形。 这通过将膜支撑在具有与液体基本上相同的折射率的透明间隔构件上并且包括限定膜的自由区域的圆形开口来实现。 一对眼镜由安装到框架上的两个可变焦距透镜组成,其具有用于调节其安置在透镜之间的框架上的焦距的致动器。 致动器通过点接触机械耦合到透镜,防止在透镜结构中产生扭曲对。
    • 2. 发明授权
    • Non-circular variable focus lens
    • 非圆形可变焦距镜头
    • US5371629A
    • 1994-12-06
    • US13436
    • 1993-02-04
    • Stephen KurtinSaul Epstein
    • Stephen KurtinSaul Epstein
    • G02B3/14G02C7/08
    • G02B3/14G02C7/085
    • A non-circular variable focal length lens, for use in spectacles, which includes a rigid lens to provide the wearer's distance correction, and a liquid-filled lens bounded by a distensible stretched elastomeric membrane to provide a variable near addition. The liquid, which has a fixed volume, is stored in the field of view between the elastomeric membrane and the rigid lens. Variation of the optical power of the liquid filled lens is achieved by displacement of a membrane support to which the outer periphery of the stretched elastomeric membrane is attached. The shape of the distended membrane is kept substantially spherical, despite the circumference of the membrane being non-circular, by allowing the membrane support to bend in a predetermined controlled manner as it is moved.
    • 用于眼镜的非圆形可变焦距透镜,其包括用于提供佩戴者距离校正的刚性透镜,以及由可扩张的弹性膜界定的液体充满的透镜,以提供可变的近似添加。 具有固定体积的液体被存储在弹性膜和刚性透镜之间的视野中。 充满液体的透镜的光焦度的变化通过使被拉伸的弹性体膜的外周附接到的膜支架的位移来实现。 尽管通过允许膜支撑件在移动时以预定的受控方式弯曲,但是扩张膜的形状保持基本上是球形的,尽管膜的周边是非圆形的。
    • 6. 发明授权
    • Actuation mechanism for variable focus spectacles
    • 可变焦眼镜的启动机制
    • US07008054B1
    • 2006-03-07
    • US10993804
    • 2004-11-20
    • Stephen KurtinDaniel E. FedeleSaul Epstein
    • Stephen KurtinDaniel E. FedeleSaul Epstein
    • G02C1/00
    • G02C7/08
    • An actuating mechanism for spectacles which include two variable focus lens units. The mechanism mounts on the spectacle bridge; and includes two elongated drive levers mounted near opposite ends of the bridge, each extending toward the other end of the bridge. The free end of each driving lever is connected to its corresponding lens unit through a linkage. The driving levers are caused to rotate simultaneously, but in opposite directions, by a cam that is driven by a sliding member that slides along the bridge. By positioning the sliding member as desired, the spectacles wearer causes the cam to rotate, thereby causing the driving levers to rotate, and both lens units to change focal length.
    • 一种用于眼镜的致动机构,包括两个可变焦距透镜单元。 机构安装在眼镜桥上; 并且包括安装在桥的相对端附近的两个细长的驱动杆,每个延伸朝向桥的另一端。 每个驱动杆的自由端通过连杆连接到其对应的透镜单元。 驱动杆被同时旋转,但是在相反的方向上,是由沿着桥接件滑动的滑动构件驱动的凸轮。 通过根据需要定位滑动构件,眼镜佩戴者使凸轮旋转,从而使驱动杆旋转,并且两个透镜单元改变焦距。