Spectral imaging method and apparatus
Patent 5677532 Issued on October 14, 1997. Estimated Expiration Date: 
April 22, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 22, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3553665 3609364 3659043 3730985 3742124 Differential electronic imaging system Methods of measuring temperature and apparatus for use therewith UV/IR fire detector with dual wavelength sensing IR channel Camera, spectrum analysis system, and combustion evaluation apparatus employing them Patent #: 5547369 InventorsAssigneeApplicationNo. 635547 filed on 04/22/1996US Classes:250/339.15, Sensing flame or explosion250/330INFRARED-TO-VISIBLE IMAGINGExaminersPrimary: Porta, David P.Assistant: Hanig, Richard Attorney, Agent or FirmForeign Patent References
International ClassG01J 001/42AbstractA fire detection camera and method of detecting fires which are not normally visible to the human eye. An image of the flame area is split into three light beams representing three different spectral ranges. The first beam corresponds to the flame image plus the background scene and is focused onto a first monochrome imaging device. The second beam corresponds to the background scene and is focused onto a second monochrome light imaging device. The third beam corresponds to light in the visible range and is focused onto a color imaging device to depict the visible surroundings. The background image is subtracted from the flame image to isolate the flame, and the isolated flame image is superimposed onto the color scene to depict a composite image that represents the flame in its actual surroundings.Other References
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