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US 12,403,666 B2Granted
Light transmitting member and method of producing the same
AssigneeCanon Kabushiki Kaisha
InventorsEiko Asami, Yoji Teramoto, Shuhei Yamamoto, Shun Ouchi
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Abstract
Provided is a light transmitting member, which maintains an antifogging property over a long period of time, and is less liable to be contaminated with organic matter, the light transmitting member including, on a base material, a porous layer containing silicon oxide particles and a layer formed of a hydrophilic polymer, wherein a polymer ratio at a depth of 10 nm from a surface of the light transmitting member is 0.15 or more and 0.40 or less.
Claims8
A light transmitting member comprising:
- a light transmitting base material;
- and
- a functional film arranged on the base material,
- wherein the functional film includes a porous layer containing a plurality of silicon oxide particles, and a hydrophilic polymer-containing layer containing a hydrophilic polymer having a zwitterionic hydrophilic group provided on a surface of the porous layer opposite to the base material, and
- wherein a ratio between an element derived from the hydrophilic polymer-containing layer and a silicon element at a depth of up to 10 nm from an uppermost surface of the functional film is 0.15 to 0.40.
2 more elements
Dependencies are inferred from the claim text.