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USE OF SELECTED GLASS TYPES AND GLASS THICKNESSES IN THE OPTICAL PATH TO REMOVE CROSS SENSITIVITY TO WATER ABSORPTION PEAKS
USE OF SELECTED GLASS TYPES AND GLASS THICKNESSES IN THE OPTICAL PATH TO REMOVE CROSS SENSITIVITY TO WATER ABSORPTION PEAKS
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机译:在光学路径中使用选定的玻璃类型和玻璃厚度,以消除对吸水峰的交叉敏感性
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摘要
Embodiments relate generally to systems and methods for filtering unwanted wavelengths from an IR detector. In some embodiments, it may be desired to remove or reduce the wavelengths absorbed by water, to reduce the effects of water on the detection of the target gas. In some embodiments, a filter glass may be used in the IR detector, wherein the filter glass comprises one or more materials that contain hydroxyls in their molecular structure, and wherein the spectral absorption properties of the filter glass are operable to at least reduce wavelengths of light absorbed by water from the optical, thereby reducing the IR detector's cross sensitivity to water.
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