ANTIREFLECTION MEMBER, AND POLARIZER, IMAGE DISPLAY DEVICE AND ANTIREFLECTION ARTICLE INCLUDING ANTIREFLECTION MEMBER

To provide an antireflection member having low reflectance and improved excoriation resistance, and an image display device including the antireflection member.SOLUTION: An antireflection member 100 includes a low reflective index layer 130 on a transparent base material 110. The low refractive index layer 130 contains a binder resin and silica particles 132 and 134. The ratio of a Si element attributed to the silica particles obtained by analyzing the surface region of the low refractive index layer 130 by X-ray photoelectron spectroscopy is 10.0 atomic% or more and 18.0 atomic% or less, and when the ratio of the Si element is converted to 100 atomic%, the ratio of the C element is 180 atomic% or more and 500 atomic% or less.SELECTED DRAWING: Figure 3 【課題】低い反射率を有するとともに、耐擦傷性を向上させた反射防止部材、及び、該反射防止部材を備える画像表示装置を提供する。【解決手段】透明基材１１０上に、低屈折率層１３０を備え、該低屈折率層１３０が、バインダー樹脂と、シリカ粒子１３２，１３４と、を含み、低屈折率層１３０の表面領域をＸ線光電子分光法により分析して得られる、前記シリカ粒子に帰属するＳｉ元素の比率が１０．０原子％以上１８．０原子％以下であり、かつ、前記Ｓｉ元素の比率を１００原子％と換算したときのＣ元素の比率が１８０原子％以上５００原子％以下である反射防止部材１００。【選択図】図３