Wavelength-selective absorptive material, infrared sensor, wavelength-selective light source, and radiation cooling system
US10901124B1 · kind B1 · utility
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Key dates
| Filing date | Sep 24, 2020 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Sep 24, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2309/105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is a wavelength-selective absorptive material which includes, in the following order: a base material; a reflective layer; and a high refractive index layer having a refractive index n of 3.0 or more with respect to infrared light having a wavelength range of 8 μm to 13 μm, having a thickness d of 30 nm to 1,000 nm, and containing a binder and flat metal particles; and an infrared absorptive layer having a maximum absorption wavelength in a wavelength range of 8 μm to 13 μm, in which a product n×d of the refractive index n and the thickness d is more than 1,000 and less than 4,875.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.