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US 12,571,944 B2Granted
Light-absorbing heat-shielding film, light-absorbing heat-shielding member, article, and method of producing the same
AssigneeCanon Kabushiki Kaisha
InventorsYoshinori Kotani, Hiroshi Saito
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Abstract
The present disclosure provides a light-absorbing heat-shielding film that achieves usually incompatible characteristics of absorbing visible light and near-infrared rays and emitting less far-infrared rays. The present disclosure provides a light-absorbing heat-shielding film including: a metal layer including fine irregularities, wherein an average height of the fine irregularities is 100 nm or more and 1000 nm or less.
Claims21
A light-absorbing heat-shielding film comprising:
- a metal layer including fine irregularities,
- wherein a surface including the fine irregularities has an average surface roughness Ra′ of 1 nm or more and 50 nm or less,
- wherein an average height of the fine irregularities is 100 nm or more and 1000 nm or less, and
- wherein the light-absorbing heat-shielding film has a reflective index of 10% or less in the visible light region (550 nm) and a reflective index of 70% or more in the far-infrared light region (10 μm).
1 more element
A light-absorbing heat-shielding film comprising:
- a metal layer including fine irregularities,
- wherein the specific surface area Sr of the surface including the fine irregularities is 1.0 or more and 3.0 or less,
- wherein an average height of the fine irregularities is 100 nm or more and 1000 nm or less, and
- wherein the light-absorbing heat-shielding film has a reflective index of 10% or less in the visible light region (550 nm) and a reflective index of 70% or more in the far-infrared light region (10 μm).
1 more element
Dependencies are inferred from the claim text.