Aperture arrangement
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United States of America Patent
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Aug 14, 2012
Grant Date -
Apr 7, 2011
app pub date -
Dec 19, 2007
filing date -
Dec 20, 2006
priority date (Note) -
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status (Latency Note)
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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.
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