Shielded Windows for EMI, MRI, EMP and TEMPEST rooms that combine maximum visibility and good cosmetic appearance together with excellent shielding effectiveness.

Installation has been made easy with production of ready glazed framed units in large window dimension. Optical Filters have an installation ready package ready for delivery.

Applications
Optical Filters are experts in the development and manufacture of shielded windows that don't have the traditionally poor light transmission and difficult cosmetic effects.

Our EMI/RFI shielding windows ideal for use in buildings and special rooms such as:

	MRI body scanning and sensitive medical operation rooms with shielding of =100dB from 10 to 100HMz
	Data interception protection for Industrial, Commercial, Civilian and Government authority buildings
	Tempest shielding in Military communication and operation centres.
	EMP (electromagnetic pulse) hardening and protection

Benefits
Cosmetic presentation and quality appearance is highly valuable for all applications, the window is a highly visible aspect of the complete technical installation and Optical Filters windows have clear benefits to the users:

	Clear visual communication between staff and patient in medical applications is a high psychological importance reducing claustrophobia and improving patient observations.
	Optical Filters windows will complement and enhance the appearance of the complete installation.
	Due to rugged laminated construction regular maintenance is no longer required and the installation will continue too work and look good far longer then non-laminated windows.

The clear visual appearance and distortion free view is shown in this double mesh window and framed demonstration unit.

Construction
High quality woven wire mesh is optically bonded in full clean room conditions between glass layers. The lamination process uses index matched adhesive providing the high optical quality and light transmission. In addition to the reduction of electromagnetic interference the full optical lamination construction improves thermal, acoustic and mechanical strength for extra safety.

Two laminated windows are glazed in units with thermal and optical separation. Extended mesh is folded into the frame and for optimum EMI termination is contacted between the copper flange and the shielded wall.

A corner detail of the window, frame and copper flange termination.

Windows can also be supplied alone for customers own framing and integration, please contact us for a detailed quotation and specification.

Below is a test certificate showing the 100db+ shielding effectiveness from 10 to 100Mhz for a double window MRI installation using Optical Filters EMI windows.