Antireflective member, and polarizing plate, image display device, and antireflective article in which said antireflective member is used, as well as method for selecting antireflective member

An antireflective member comprising a low refractive index layer on an optically transmissive substrate, the low refractive index layer comprising a binder resin and hollow particles, wherein

• the hollow particles have an average primary particle size of 50 nm or more and 100 nm or less,
• a luminous reflectance Y value of the antireflective member, as measured at an incident angle of light of 5 degrees from the side having the low refractive index layer with respect to the optically transmissive substrate, is 1.0% or less, and
• the antireflective member satisfies the following condition 1:
• <condition 1>
• in a region of 5 μm×5 μm on a surface of the antireflective member on a side having the low refractive index layer with respect to the optically transmissive substrate, spatial frequency analysis of elevation is performed to calculate power spectrum intensity of elevation for each wavelength;
• after calculating a sum of power spectrum intensities of elevations at all measurement wavelengths, the sum is normalized to 1;
• and when a ratio of a power spectrum intensity of elevation at a wavelength of 1.25 μm to the sum of power spectrum intensities of elevations normalized to 1 is defined as P1, P1 is 0.015 or more.