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    • 8. 发明授权
    • Single vision spectacle lens
    • 单眼镜眼镜
    • US08092012B2
    • 2012-01-10
    • US12520607
    • 2006-12-22
    • James S. MerrittShyamy SastryC. Benjamin WooleyEdgar V. MenezesAmitava Gupta
    • James S. MerrittShyamy SastryC. Benjamin WooleyEdgar V. MenezesAmitava Gupta
    • G02C7/02G02C7/06
    • G02C7/02
    • An improved single lens comprising: a continuous change in lens curvature going downwards; a front and a back surfaces; an upper part which front and back surfaces are top zones of front and back surfaces, covering at least the half of respectively front and back surfaces, and where the two top zones are aligned to each other such that the effective power of the upper part of the lens is constant; a lower part used for viewing near objects which front and back surfaces are lower zones of front and back surfaces, the front and back lower zones comprising each a surface zone where top to bottom increasing curvature of each surface zone is provided and where the two front and back lower zones are aligned to each other such that the maximum difference of the effective power of the lower part of the lens and the effective power of the upper part of the lens is comprised between 0 and 0.5 Diopter.
    • 一种改进的单透镜,包括:透镜曲率向下的连续变化; 前表面和后表面; 前表面和后表面是前表面和后表面的顶部区域的上部,其覆盖至少两个前表面和后表面的一半,并且其中两个顶部区域彼此对准,使得上部的有效功率 镜头是恒定的; 用于观察邻近物体的下部,前表面和后表面是前表面和后表面的下区域,前和后下区域包括每个表面区域,每个表面区域的顶部到底部增加曲率,并且两个前部 并且后下部区域彼此对准,使得透镜的下部的有效功率和透镜的上部的有效功率的最大差异在0和0.5屈光度之间。