Aperture arrangement
US8242451B2 · kind B2 · utility
0Cited by
3References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 19, 2007 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Jul 1, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J1/0488
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An aperture arrangement is disclosed, such as an aperture arrangement suitable for use with a dual wavelength infrared detector. A detector is disclosed which includes a casing; an aperture defined in one end of the casing; and a filter having an inner region and an outer region substantially (e.g., greater than 50%) covering the aperture; wherein the outer region of the filter transmits radiation within a first range of wavelengths and reflects radiation within a second range of wavelengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.