Thermal imaging system and method

A thermal imaging and thermal detection technology, applied in the field of remote detection, can solve the problems of sampling time limitation, loss of IR radiation, etc.
CN1902473AInactive Publication Date: 2007-01-24NAMAL TECH LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NAMAL TECH LTD
Publication Date
2007-01-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

Systems and methods for thermal sensing and imaging using the electro-optic effect. A thermal detection system comprises a temperature sensing element that includes an electro-optic (EO) material layer having a length axis and characterized by a temperature dependent index of refraction, an electrical mechanism for inducing a change in the index of refraction, a laser beam propagating lengthwise through EO layer for probing the refraction index change, and a light intensity meter for measuring a laser beam intensity change caused by the temperature dependent refraction index change. Thermal imaging is obtained by using a pixel array of such thermal sensing elements. The intensity reading may be done in either a cross-polarizer or a Mach Zehnder Interferometry reading configuration.
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Description

field of invention

[0001] The present invention relates to the remote detection of heat emitted by objects, ie the detection of temperature remotely by means of optical means. More specifically, the present invention is a thermal imaging system and method for detecting thermally induced changes in electro-optical (EO) materials. Background of the invention

[0002] Detection of temperature can generally be performed by a single detector or by an array of such detectors. A single detector can be used in various applications, for example as a motion detector. The detector array is used to generate a thermal image (image) of the observed scene. Such thermal imaging systems are very useful in night vision (eg, for military use), as a driving aid, and in heat measurement (eg, in fire alarm systems). Thermal detectors can be implemented using a large number of technologies, some of which, such as thermocouples, require direct contact with the object being measured and are there...

Claims

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