Patent ID: 7445348

Claim:
A reflector comprising a reflective layer having a laminate structure of at least a high refractive index layer (A), a low refractive index layer (B), and a metal layer (C) mainly composed of a metal selected from silver and aluminum; and a polymer base (D), wherein the layer (A), the layer (B) and the layer (C) are laminated in the order of (A)/(B)/(C), and wherein the polymer base (D) satisfies the following condition (I), (I) the content (Rn) of atoms of the same elements as elements (A 2 ) in the atoms of elements (A 1 ) is not less than 98.0 atomic %, wherein the elements (A 1 ) are elements other than metals observed by an XPS (X-ray photoelectron spectroscopy) measurement at a portion at depths of 0 nm to 10 nm from a surface of the polymer base (D) in contact with the reflective layer, and the elements (A 2 ) are elements other than metals observed by the XPS measurement at a portion at depths of 50 nm to 10 μm from the surface of the polymer base (D) in contact with the reflective layer.