发明名称 |
ANTI-REFLECTION COATING, OPTICAL MEMBER HAVING IT, AND OPTICAL EQUIPMENT COMPRISING SUCH OPTICAL MEMBER |
摘要 |
A anti-reflection coating comprising first to ninth layers laminated in this order on a substrate for having reflectance of 0.2% or less to light in a visible wavelength range of 390-720 nm, the second, fourth, sixth and eighth layers being high-refractive-index layers formed by high-refractive-index materials having refractive indices of 2.21-2.70 to a helium d-line having a wavelength of 587.56 nm; the first, third, fifth and seventh layers being intermediate-refractive-index layers formed by an intermediate-refractive-index material having a refractive index of 1.40 or more and less than 1.55 to the d-line; and the ninth layer being a low-refractive-index layer formed by a low-refractive-index material having a refractive index of 1.35 or more and less than 1.40 to the d-line. |
申请公布号 |
US2014078589(A1) |
申请公布日期 |
2014.03.20 |
申请号 |
US201314019901 |
申请日期 |
2013.09.06 |
申请人 |
RICOH IMAGING COMPANY, LTD. |
发明人 |
FUJII HIDEO;TAKETOMO HIROKI |
分类号 |
G02B1/11 |
主分类号 |
G02B1/11 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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