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Optical display shielding machine and its electromagnetic shielding desk

An optomechanical and shielding body technology, applied in shielding, magnetic field/electric field shielding, optics, etc., can solve the problems of high cost of lens group, difficulty of lens group, difficult to realize, etc., to improve shielding efficiency, increase display brightness, reduce partial loss effect

Active Publication Date: 2009-01-14
北京赫安测评技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small inner diameter of the electromagnetic wave cut-off tube, it is very difficult to arrange the lens group in the electromagnetic wave cut-off tube. On the one hand, the cost of the lens group is high;

Method used

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  • Optical display shielding machine and its electromagnetic shielding desk
  • Optical display shielding machine and its electromagnetic shielding desk
  • Optical display shielding machine and its electromagnetic shielding desk

Examples

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Embodiment Construction

[0029] Typical embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] FIG. 1 shows a schematic structural view of a light display shielding machine 1 according to the present invention. As shown in FIG. 1 , the light display shielding machine 1 mainly includes a shielding body 10 , a video imaging device 20 , and a shielding keyboard 190 .

[0031] In this embodiment, the shielding body 10 is a substantially airtight metal box consisting of a top wall 113 , a bottom wall 117 , and side walls connecting the top wall 113 and the bottom wall 117 . Wherein the side walls include a front side wall 111, a rear side wall 115, and a left side wall and a right side wall (not shown in the figure). The electromagnetic shielding door 120 is disposed on the front side wall 111 .

[0032] The waveguide windows 131 and 133 used for ventilation and heat dissipation can be randomly arranged on the wall of the shie...

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PUM

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Abstract

The invention discloses a light display shielding apparatus, aiming at minimizing the imaging beam loss in a transmission process. The shielding apparatus comprises a shielding body, wherein, a beam device provided with a beam outlet and a host computer providing an image source for the beam device are arranged; a display screen arranged on the outer part of the shielding body; a fixing base which is provided with a through hole inside corresponding to the beam outlet and is fixed on the wall of the shielding body; at least one metal lens barrel which is connected with the fixing base and transmits the imaging beams of the beam device to the outside of the shielding body and is provided with a plurality of lenses inside. The invention guarantees the shielding function as waveguide apertures on one hand and minimizes the imaging beam loss in the transmission process on the other hand. The invention also discloses an electromagnetic shielding table adopting the structure and is suitable for sites where secrets need to be kept.

Description

technical field [0001] The invention relates to a low-radiation video imaging device, in particular to a light display shielding machine, which belongs to the technical fields of computer information security and electromagnetic shielding. The invention also relates to an electromagnetic shielding table related to the optical display shielding machine. Background technique [0002] At present, electromagnetic shielding equipment such as low-leakage monitoring stations and electromagnetic shielding tables are widely used in secret-related departments of party, government and military agencies. This kind of equipment generally arranges the display inside the shielding casing, and the user can watch the information on the display through the shielding glass window provided on the shielding casing. Due to the limitation of technical conditions such as materials and processes, the shielding effectiveness of shielding glass can only meet the requirements of Class B in the nationa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B29/00G03B21/00G02B7/02H05K9/00G06F1/00G12B17/02
Inventor 房非拉朱安东于泳黄永听
Owner 北京赫安测评技术有限公司
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