炒意粉专利名称：ADJUSTABLE FOCUS LENSES 发明人：SPIVEY, BRETT
中班数学教案申请号：US2006010315
申请日：20060321
公开号：WO2006102365A3岁月神偷观后感
复习小报
顺序的意思公开日：
20061123
相邻数的概念专利内容由知识产权出版社提供
摘要：A lens unit with two lens elements each having special surfaces such that an adjustment of the position of one of the two lens elements relative to the other in a direction generally perpendicular to a viewing direction changes the focusing power of the lens unit. In preferred embodiments two lens units are mounted in a frame to provide eyeglass with adjustable focus. Several frame designs are described. In preferred embodiments two lens units, each lens unit having two lens elements are mounted in a frame to provide eyeglass with adjustable focus. Several designs are described. Some designs provide for movement side to side movement of the lens elements relative to each other. In other designs the relative motion is up and down. A simple technique is a thumbscrew adjustment that is operated by the wearer. Another design is bad on finger force against a friction force. In some preferred embodiments parate frames holding the lens elements pivot about pivot points on the earpiece of a support frame. In other designs two rear lens elements are mounted in a support frame and the front lens elements are mounted in a parate frame that pivots about a point on the earpiece of the support frame. Another design includes a torsion bar assures that the movements of each lens element in one of the lens units is the same as the movements of the lens elements in the other lens unit. Techniques for automatic focusing of the lens are also
团结稳疆disclod. Techniques for automatic focusing of the lens are also disclod.
申请人：SPIVEY, BRETT
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