Canon Kabushiki Kaisha

Masuo Ban

Kazue Uchida

An optical element includes a substrate and an antireflection film. The antireflection film comprises a first film formed on the substrate and a second film formed on the first film. The second film comprises a first layer, a second layer, and a third layer arranged consecutively in order from a side closer to the first film. The first layer includes magnesium fluoride. The second layer includes silicon oxide and aluminum oxide. The third layer includes a fluorine-containing organic compound.

Optical element, optical system, and optical apparatus

An optical element includes a base material, which consists of resin material, and an antireflection film. The antireflection film consists of a first film formed on the base material and a second film formed on the first film. The second film consists of a first layer, a second layer, and a third layer, in order from a side closest to the first film. The first layer and the third layer each include silicon oxide. The second layer includes magnesium fluoride.

Growing community of inventors

Tochigi, Japan

Masuo Ban