Optical imaging system and imaging apparatus

An imaging apparatus comprising:

• an optical imaging system;
• and
• an imaging device that converts an optical image, which is formed by the optical imaging system, into an electric signal,
• wherein the optical imaging system has at least one optical component including an optical filter and a lens,
• a hard coat is applied to an object side or an image side of an optical surface of the at least one optical component, and
• the hard coat is formed to be able to come into contact with a different component positioned adjacent thereto or an optical surface of a different optical component positioned adjacent thereto.