Optical member and method of producing the same
AssigneeCanon Kabushiki Kaisha
InventorMasanobu Ogane
Life of this patent
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Abstract
Provided are an optical member having abrasion resistance and transparency and a method of producing the optical member. The method of producing the optical member includes coating a coating material containing hollow particles and a solvent on a substrate and further coating a coating material containing a binder and a solvent to form a film in which the binder lies between the hollow particles; and then drying the film.
Claims20
A method of producing an optical member having a substrate and an antireflection film having a layer containing particles and a binder, provided on the substrate,
- the method comprising forming the layer including:
- performing coating with a liquid having particles dispersed in a dispersion medium, and
- then performing coating with a solution consisting essentially of a component forming the binder, and a solvent,
- wherein shapes of the particles appear on a surface of the layer on a side opposite to the substrate.
A method of producing an optical member having a substrate, and an antireflection film having a layer containing particles and a binder, provided on the substrate,
- the method comprising forming the layer including:
- performing coating with a liquid having particles dispersed in a dispersion medium, and
- then performing coating with a solution consisting essentially of a component forming the binder, and a solvent,
- wherein a surface of the layer on a side opposite to the substrate has convex portions, and
- a shape of the convex portions corresponds to a shape of the particles.
An optical member comprising:
- a substrate;
- and
- an antireflection film having a layer containing particles and a binder, provided on the substrate,
- wherein shapes of the particles appear on a surface of the layer on a side opposite to the substrate, and
- the layer includes the particles at a two-dimensional density of 0.8 or more and 0.88 or less.
An optical member comprising:
- a substrate;
- and
- an antireflection film having a layer containing particles and a binder, provided on the substrate,
- wherein a surface of the layer on a side opposite to the substrate has convex portions,
- a shape of the convex portions corresponds to a shape of the particles, and
- the layer includes the particles at a two-dimensional density of 0.8 or more and 0.88 or less.
Dependencies are inferred from the claim text.