Infrared source and method of manufacturing the same
US8017923B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2007 |
| Grant date | Sep 13, 2011 |
| Priority date | — |
| Expiry date | Jul 4, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided an infrared light source that has a simple structure and radiates infrared rays polarized in a specific direction and having a specific wavelength. The infrared light source (100) comprises a heat generator (107) and a latticework (101) in which a dielectric part (105) and a metal part (103) are alternately formed at a constant pitch in a constant direction. The infrared rays are radiated in a direction perpendicular to the surface of the latticework and are polarized in the direction indicated by an arrow A. If the constant pitch is denoted by P, the width of the dielectric part in the constant direction by T, and the specific wavelength by λ, for arbitrary P and T that meet the inequalities 0<P≦2.0λ and T≦0.5P, the depth D of the latticework is so selected that the intensity spectrum of the infrared rays radiated from the infrared light source has the peak at λ.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.