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    • 2. 发明申请
    • BACK SIDE ANTI-REFLECTIVE COATINGS, COATING FORMULATIONS, AND METHODS OF COATING OPHTHALMIC LENSES
    • 背侧防反射涂层,涂层配方和涂覆眼镜的方法
    • WO2017199249A1
    • 2017-11-23
    • PCT/IL2017/050547
    • 2017-05-16
    • SHAMIR OPTICAL INDUSTRY LTD.
    • KATZMAN, ZoharNOV, Benny
    • B29D11/00G02B1/113G02C7/02A61F9/02B29L11/00
    • Ultraviolet (UV) radiation can harm the eye. Fortunately, a spectacle lens can be coated with a UV anti-reflection (AR) coating to reduce the amount of UV radiation incident on the eye. If the AR coating is on the back side of the lens (the convex surface closest to the eye), the AR coating will reduce the amount of UV light that is transmitted through the lens to the eye. It will also reduce the amount of UV light that is reflected off the back side of the lens toward the eye. The AR coating may include five or more alternating layers of silicon nitride and silicon dioxide or other suitable dielectric materials. It can be sputtered onto the back side of the lens as part of an on-block manufacturing (OBM) process while the ophthalmic lens blank is still attached to the block, before the ophthalmic lens blank is removed and edged.
    • 紫外线(UV)辐射会伤害眼睛。 幸运的是,眼镜片可以涂上防紫外线(AR)涂层,以减少入射到眼睛上的紫外线辐射量。 如果AR涂层位于镜片的背面(最靠近眼睛的凸面),AR涂层将减少透过镜片到达眼睛的UV光量。 它也会减少从镜片背面向眼睛反射的紫外光量。 AR涂层可以包括五个或更多个氮化硅和二氧化硅的交替层或其他合适的介电材料。 作为片上制造(OBM)工艺的一部分,它可以被溅射到镜片的背面,而眼科镜片坯件仍然连接到该块,在眼镜片坯件被移除和磨边之前。