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    • 8. 发明授权
    • Ultraviolet radiation and blue light blocking polarizing lens
    • 紫外线和蓝光阻挡偏光镜
    • US4878748A
    • 1989-11-07
    • US329600
    • 1989-03-28
    • Laurie A. JohansenPaul Diffendaffer
    • Laurie A. JohansenPaul Diffendaffer
    • A61B5/103G02C7/10G02C7/12
    • A61B5/0059G02C7/104G02C7/12A61B5/441G02C2202/16
    • A lens (10) that substantially blocks horizontally polarized light and selectively blocks wavelengths between 300 and 549 nanometers. The selective blocking is controlled by a sharp cut-on filter (14) selected to cut-on at either 450, 500, 515, 530, or 550 nanometers. The specific blocking and cut-on point selected is dependent upon the ultimate usage/environment of the lens (10). If a 450 cut-on filter is selected, wavelengths between 300 and 449 nanometers are blocked before a cut-on occurs at 450 nanometers; similarly, a 550 cut-on filter blocks wavelengths between 300 and 549 nanometers before a cut-on occurs at 550 nanometers. The lens (10) also allows 30 to 40 percent of wavelengths over 625 nanometers to be transmitted. The filter (14) in combination with the polarizer (16) blocks harmful Ultraviolet radiation and blue light. While a beneficial and calming effect is achieved by wearing only blue-blocking lenses, the addition of the polarizer (16) substantially enhances the calming effect and the improvement of vision without visual discomfort.
    • 透镜(10),其基本上阻挡水平偏振光并选择性地阻挡在300和549纳米之间的波长。 选择性阻挡由选择为在450,500,515,530或550纳米处切割的尖锐切入式过滤器(14)控制。 所选择的特定阻挡点和切入点取决于镜片(10)的最终使用/环境。 如果选择450切割滤光片,则在450纳米的切割发生之前,阻挡在300和449纳米之间的波长; 类似地,550切割滤光器在550纳米之前发生切割之前阻挡在300和549纳米之间的波长。 透镜(10)还允许传输超过625纳米的30-40%的波长。 与偏振器(16)组合的滤光器(14)阻挡有害的紫外线辐射和蓝光。 虽然通过仅佩戴蓝色阻挡透镜来实现有益和平静的效果,但是偏振器(16)的添加基本上增强了平静效果和视力的改善而没有视觉上的不适。