| abstract |
An optical element comprising a mirror surface, in which a first layer having an optical surface is formed on a metal substrate, the metal substrate includes a Mg-Li alloy as a main component, and a reflective film is provided on the optical surface, wherein, An opening for introducing light into the imaging optical system and a plurality of mirror surfaces of the imaging optical system are formed on the metal substrate, the plurality of mirror surfaces being configured to reflect the light introduced from the opening. A moving body including the optical element is also provided. |