| abstract |
There is provided an optical apparatus which comprises a lens, and a lens barrel holding the lens, wherein a film (14) is formed on a surface of the lens barrel, the film contains a resin, titanium oxide (5) coated with silica (12), and an inorganic particle (17), an average particle size of the inorganic particle (17) is 10nm or more and 110nm or less, and an average particle size of the titanium oxide (5) coated with the silica (12) is 0.2µm or more. Thus, it is possible to achieve the optical apparatus which, in an anoxic atmosphere, has less discoloration due to sunlight and less reflectance deterioration even when color is thin, and has the high solar reflectance. |