Thermoplastic resin composition and optical member using same
US12286532B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Dec 24, 2019 |
| Grant date | Apr 29, 2025 |
| Priority date | — |
| Expiry date | Mar 31, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/22
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermoplastic resin composition that cuts visible light and has infrared light transmittance. A thermoplastic resin composition including a thermoplastic resin and a coloring material, wherein the refractive index at a wavelength of 894 nm is 1.60 or greater, and when the thickness of the thermoplastic resin composition is 1 mm, the maximum value of the transmittance of wavelengths of 380 nm-630 nm is greater than 0% and less than or equal to 1.00%, and the average transmittance of wavelengths of 840 nm-940 nm is greater than or equal to 80%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.