Stock material or miscellaneous articles – Hollow or container type article – Glass – ceramic – or sintered – fused – fired – or calcined metal...
Patent
1994-02-17
1995-10-03
Loney, Donald J.
Stock material or miscellaneous articles
Hollow or container type article
Glass, ceramic, or sintered, fused, fired, or calcined metal...
428137, 428192, 333252, 527861, 5278613, E06B 324, H01P 108
Patent
active
054550858
ABSTRACT:
A window has two plates of radiation-propagative material, such as two plates of glass or two films of transparent dimensionally-stable plastic which serve as window panes through which electromagnetic radiation can propagate. The panes are spaced apart by one quarter wavelength of the radiation by a spacer block to provide for cancellation of any reflected wave. The window is readily disassembled to permit replacement of the spacer block to increase or to decrease the spacing as may be required to adjust the window for a different frequency band of radiation. Also, the construction of the window permits its mounting within the aperture of a wall, and to serve for joining two waveguides, thereby, to facilitate use of the window in the conduct of tests in a laboratory. The spacer block with the transparent plates thereon are positioned between a base and a cap, both of which are configured for attachment to waveguides. The base and the spacer block and the cap are provided with openings arranged coaxially and through which radiant energy propagates. A set of bolts and alignment pins extend through the window components for facile assembly and disassembly.
REFERENCES:
patent: 5132652 (1992-07-01), Doehler et al.
patent: 5234526 (1993-08-01), Chen et al.
Denson-Low W. K.
Gudmestad Terje
Hughes Aircraft Company
Loney Donald J.
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