Canon Kabushiki Kaisha

Masanobu Ogane

Norihiko Ochi

Atsushi Takata

Kenji Makino

A cemented lens includes a first optical element, a second optical element, a third optical element sandwiched between the first optical element and the second optical element and containing resin, a light shielding layer covering a surface of the third optical element that is in contact with neither the first optical element nor the second optical element, and a porous layer covering at least a part of the light shielding layer.

Cemented lens, optical system including the same, optical apparatus, and method for manufacturing cemented lens

Provided are an antireflection film having a high antireflection effect in a broad band, including, on a substrate, in this order: a particle layer containing particles; and a layer having a textured structure containing aluminum oxide as a main component, in which the particle layer has an aluminum oxide textured structure between the particles, and an optical member and an optical apparatus each using the antireflection film.

Antireflection film, and optical member and optical apparatus each using the antireflection film

An antireflection film includes a first layer including hollow particles. The first layer includes the hollow particles, a binder, and a fluorine compound; has a refractive index of 1.22 to 1.30; and has a contact angle between the surface thereof and n-hexadecane of 50&#xb0; to 70&#xb0;.

Antireflection film, optical member, and method of producing optical member

An antireflection film, comprising a film including: hollow particles; and a binder bonding the particles, wherein: the binder contains voids; and the binder contains 10 or less voids each having a cross-sectional area of 1,000 nmor more with respect to 1 &#x3bc;mof a cross-sectional area of the binder. A method of producing the film, comprising: forming a paint into a film by applying the paint onto a substrate, the paint containing hollow particles, a binder, and a solvent, in which a content of the particles is 50-85 wt % and a content of the binder is 15-40 wt % with respect to a total weight of a solid content of the paint, and the paint has a viscosity of 1.3-2 mPa&#xb7;s at its film-forming temperature; and drying the film.

Antireflection film and method of producing the same

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.

Optical member and method of producing the same

A method of manufacturing an optical component includes, bringing a mold including at least one portion made of an infrared transmitting material into tight contact with a substrate, heating the substrate by irradiating the substrate with an infrared ray in a state that a gap is present between the substrate and the mold, and placing the mold and the substrate into tight contact with each other.

Method of manufacturing optical component and apparatus for manufacturing optical component

A molding method of a plastic molded product includes preparing at least one mold including a high-precision surface; preparing a plurality of molds having a low-precision surface; sequentially supplying molten resin to one of the plurality of molds having low-precision surface; sequentially cooling, for a predetermined length of time, the molds supplied with the molten resin while applying pressure, taking out a molded member from the cooled mold, setting the molded member which has been taken out in the mold having the high-precision surface, and melting only a surface of the molded member while pressing the high-precision surface against the surface to form a plastic molded product.

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Yokohama, Japan

Masanobu Ogane