Collimating optical system, based on elliptical mirror focusing, enabling high-resolution rapid scan imaging

An ellipsoid mirror and fast scanning technology, applied in the field of quasi-optical systems, can solve the problems of low spatial resolution, long imaging time, slow development, etc., and achieve the effects of high near-field and high spatial resolution, simple control, and short scanning time.

Active Publication Date: 2015-09-09
BEIJING AEROSPACE YILIAN TECH DEV
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Problems solved by technology

However, the current passive THz / MMW imaging security equipment that can be practically applied to public places such as customs, airports, and subway security checks still has problems such as long imaging time, low spatial resolution, and high cost, which lead to slow development of technology research and commercialization

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  • Collimating optical system, based on elliptical mirror focusing, enabling high-resolution rapid scan imaging
  • Collimating optical system, based on elliptical mirror focusing, enabling high-resolution rapid scan imaging

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Embodiment Construction

[0018] A quasi-optical system for high-resolution fast scanning imaging based on ellipsoidal mirror focusing, such as figure 1 and figure 2 As shown, the system includes a plane mirror 1, a condenser mirror 2 and a receiving antenna 3, the plane mirror is used to scan the field direction of the measured object 4, the condenser mirror is used to receive the reflected light of the plane mirror to converge the Gaussian beam, and the receiving antenna is used to receive The reflected light information received by the condensing mirror is transmitted to the imaging server; the condensing mirror is an ellipsoidal mirror, and a wedge mirror 5 is also arranged between the ellipsoidal mirror and the receiving antenna, and the wedge mirror receives the ellipsoidal mirror. Reflected light information, completes the scanning of the measured object in the row direction, and reflects the reflected light information to the receiving antenna, wherein the plane mirror is a pitching plane mirr...

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Abstract

The invention discloses a collimating optical system, based on elliptical mirror focusing, enabling high-resolution rapid scan imaging. The system comprises a flat mirror, a condenser and a reception antenna. The condenser is an elliptical mirror. A wedge mirror is arranged between the elliptical mirror and the reception antenna. The wedge mirror receives reflected light information of the elliptical mirror, and reflects the reflected light information to the reception antenna. The flat mirror is a pitching flat mirror, the mirror surface of which faces a to-be-measured object to pitch and swing. The wedge mirror is a rotary wedge mirror, the wedge surface of which faces the elliptical mirror and the reception antenna to rotate. The system helps to overcome the disadvantages that terahertz waveband close range passive safety check imaging is low in resolution and long in time. The elliptical reflector, the rotary wedge mirror and a detector array are combined together to achieve high resolution and high-efficiency quick safety check imaging. The collimating optical system is simple in control and high in precision, and can be widely applied to the close range safety check imaging field in public places such as airports, subways and ferry wharfs.

Description

technical field [0001] The invention relates to a high-resolution fast scanning imaging quasi-optic system based on ellipsoidal mirror focusing, which is a quasi-optical antenna system based on ellipsoidal mirror focusing and wedge mirror rotating and scanning. Background technique [0002] In recent years, the security threats to public places at home and abroad have been increasing, and public security issues have attracted much attention. Traditional optical, infrared, X-ray and metal detection security inspection systems cannot detect some potential hidden items, especially some non-metallic weapons, so the security inspection of human body and accompanying items needs to be solved urgently. With the rapid development of imaging technology, breakthroughs have been made in the detection performance of the international security inspection system. The operating frequency band of the system is mainly in the range of millimeter wave and terahertz wave. [0003] Millimeter w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/12
Inventor 郝丛静高翔王卓段玮倩丁青何君
Owner BEIJING AEROSPACE YILIAN TECH DEV
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