OPTICAL ELEMENT HAVING ANTIFOGGING ANTIREFLECTION FILM AND METHOD FOR MANUFACTURING THE ANTIFOGGING ANTIREFLECTION FILM

摘要

PPROBLEM TO BE SOLVED: To provide an optical element having an antireflection film which has both of scratch resistance and antifogging property and a low refractive index and which is suitable for a lens having a low glass transition temperature; and a method for manufacturing the antireflection film. PSOLUTION: The optical element has an antifogging antireflection film on the surface of a base material. The antireflection film has a silica aerogel layer having a contact angle to water of 15. PCOPYRIGHT: (C)2006,JPO&NCIPI