A Portable Terahertz Semi-Active Color Camera

A color camera, semi-active technology, applied in the field of terahertz imaging, can solve the problems of target radiation intensity or feature recognition, the complexity of target radiation characteristics, unsuitable for portable use, etc., to achieve high integration and improve recognition capabilities. , The effect of high machining accuracy
CN104052936BInactive Publication Date: 2017-05-10BEIJING INSTITUTE OF TECHNOLOGYGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING INSTITUTE OF TECHNOLOGYGY
Publication Date
2017-05-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a portable terahertz semi-active color focal plane camera which comprises a local oscillator reference source, a terahertz multi-beam quasi-optical mixer and W terahertz irradiation source modules, W being the number of pre-obtained colours, and W being a natural number which is equal to or larger than 1. Each terahertz irradiation source module sends terahertz irradiation signals for irradiating on a detected target. Each terahertz irradiation source module comprises a terahertz irradiation signal frequency multiplier and a terahertz antenna. Local oscillator signals generated by the local oscillator reference source are subjected to frequency multiplication through the terahertz irradiation signal frequency multiplier, radiated by the terahertz antenna, and then, irradiates on the detected target. The camera in the invention is small in size, light in weight; capable of improving target identification capability in a complex background environment, excellent in anti-disturbance performance, capable of real-time imaging, and has good resolution and sensitivity.
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Description

technical field

[0001] The invention relates to the technical field of terahertz imaging, in particular to a portable terahertz semi-active color camera. Background technique

[0002] Terahertz (THz) waves usually refer to electromagnetic radiation (1THz=10 12 Hz), which lies between microwaves and infrared radiation on the electromagnetic spectrum. Terahertz wave radiation can have the following characteristics in imaging applications: Terahertz wave radiation can penetrate many common non-metallic covering materials and detect hidden objects; the wavelength of terahertz wave is short enough to obtain higher imaging spatial resolution , or to achieve high-precision positioning of dangerous objects; electromagnetic radiation at terahertz frequencies is non-ionizing to organisms, so it is safer for the human body when used at an appropriate intensity; compared with microwave and millimeter wave imaging systems, under the same image resolution, Terahertz imaging systems are ...

Claims

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