REFLECTIVE TYPE IMAGING ELEMENT AND OPTICAL SYSTEM, AND METHOD OF MANUFACTURING RELECTIVE TYPE IMAGING ELEMENT

This reflective imaging element (1) includes: a first reflective element (11); and a second reflective element (21) arranged over the first reflective element. Each of the first and second reflective elements has a multilayer structure in which a plurality of unit reflective elements are stacked one upon the other. Each of the plurality of unit reflective elements includes a light transmitting portion (1111), a reflective layer (1113), and an optical attenuation layer (1115) arranged between the light transmitting portion and the reflective layer. The plurality of unit reflective elements include two unit reflective elements which are adjacent to each other and which are arranged so that the light transmitting portion of one of the two unit reflective elements is adjacent to the reflective layer of the other unit reflective element. And the direction in which the plurality of unit reflective elements are stacked in the first reflective element and the direction in which the plurality of unit reflective elements are stacked in the second reflective element intersect with each other at right angles.