Composition for forming a near infrared screening filter, and near infrared screening filter
US5807511A · kind A · utility
17Cited by
12References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1997 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Mar 31, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/208
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A composition for forming a near infrared screening filter, which comprises a binder (i), a metal oxide or inorganic oxide powder (ii) having a light transmittance ratio (transmittance of light with a wavelength of 550 nm/transmittance of light with a wavelength of 1180 nm) of at least 3, and a dye (iii) having a light transmittance ratio (transmittance of light with a wavelength of 550 nm/transmittance of light with a wavelength of from 740 to 930 nm) of at least 2.7, as essential components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.