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    • 10. 发明申请
    • Optical element for use in eye protection devices and methods for its manufacture
    • 用于眼睛保护装置的光学元件及其制造方法
    • US20060114573A1
    • 2006-06-01
    • US11090540
    • 2005-03-25
    • Giuseppe IoriGraziano MarusiPaolo Baiocchi
    • Giuseppe IoriGraziano MarusiPaolo Baiocchi
    • G02B25/00
    • G02B5/3033G02C7/104G02C7/108G02C7/12
    • An optical element is described comprising an optical part dyed so as to have a curve of the factor of spectral transmittance in a wavelength range comprised between 400 and 700 nm comprising: i) at least one relative maximum at a wavelength comprised between 400 and 510 nm, and ii) at least one relative minimum at a wavelength comprised between 510 and 625 nm, wherein the ratio between the value of the factor of spectral transmittance at said at least one relative maximum and the value of the factor of spectral transmittance at said at least one relative minimum is of at least 1.3, and wherein the ratio between the value of the factor of spectral transmittance at a wavelength of 700 nm and the value of the factor of spectral transmittance at said at least one relative minimum is of at least 3.0. Advantageously, such an optical element allows to enhance visual acuity, increasing in particular the chromatic contrast and the sensitivity to the red and blue colors, and to meet the traffic lights and road signal recognition requirements indicated by the international standards.
    • 描述了一种光学元件,其包括染色的光学部件,以便在包括400和700nm的波长范围内具有光谱透射率因子的曲线,包括:i)在400和510nm之间的波长处的至少一个相对最大值 和ii)在510和625nm之间的波长处的至少一个相对最小值,其中在所述至少一个相对最大值处的光谱透射率的值与所述至少一个相对最大值处的光谱透射率因子之间的比值 至少一个相对最小值至少为1.3,并且其中波长为700nm处的光谱透射率的值与所述至少一个相对最小值处的光谱透射率的值之间的比值至少为3.0 。 有利地,这种光学元件允许增强视敏度,特别是增加色度对比度和对红色和蓝色颜色的敏感性,并且满足国际标准所示的交通信号灯和道路信号识别要求。