EMISSIVITY ENHANCED MID IR SOURCE
First Claim
1. An infrared source, comprising:
- an infrared element which provides infrared radiation at desired wavelengths when heated by an excitation means to a predetermined temperature range;
an insulator coupled with said infrared element so as to reach a collaborative temperature range provided by the generated heat from said infrared element, wherein said insulator at said collaborative temperature range provides for one or more desired infrared emission spectral bands that co-add with the output emission of said infrared element so as to eliminate spectral deficiencies resulting from said infrared element reaching said collaborative temperature range; and
wherein one or more walls of said insulator are configured as a conical interior that converges to an to an opening that defines an optical aperture of said source so as to enhance emission of the co-added said insulator and said infrared element optical spectral output and additionally match a field of view of a coupled spectrometer imaging element.
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Abstract
An infrared (IR) source apparatus that includes a desired infrared source element coupled to an insulating housing so to minimize overall source inefficiency at desired optical bandwidths is introduced. The insulation itself is machined or configured in a way so that the infrared source element is in contact with a designed cavity in the insulation so that the IR source image becomes the average of the insulation material and the infrared element. Such an arrangement of the present invention increases the emissivity of the IR source below about 1500 wave numbers, more often, below about 1100 wave numbers, and even more particularly, at about 1079 wave numbers. Accordingly, the combined emissivity of the infrared source and the insulation substantially enhances spectral emission and eliminates or reduces spectral artifacts from the formation of oxides on the infrared source surfaces.
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Citations
15 Claims
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1. An infrared source, comprising:
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an infrared element which provides infrared radiation at desired wavelengths when heated by an excitation means to a predetermined temperature range; an insulator coupled with said infrared element so as to reach a collaborative temperature range provided by the generated heat from said infrared element, wherein said insulator at said collaborative temperature range provides for one or more desired infrared emission spectral bands that co-add with the output emission of said infrared element so as to eliminate spectral deficiencies resulting from said infrared element reaching said collaborative temperature range; and wherein one or more walls of said insulator are configured as a conical interior that converges to an to an opening that defines an optical aperture of said source so as to enhance emission of the co-added said insulator and said infrared element optical spectral output and additionally match a field of view of a coupled spectrometer imaging element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification