Optical transparency having an electromagnetic pulse shield

Details Optical transparency having an electromagnetic pulse shield Optical transparency having an electromagnetic pulse shield

1988-10-12

1990-06-12

Arnold, Bruce Y.

Electricity: conductors and insulators

Feedthrough or bushing

Compression

174 35MS, G02B 2700, H05K 400

Patent

active

049327550

ABSTRACT:
An optical transparency adapted to substantially attenuate electromagnetic pulses incident on it, yet transmit visible light with minimal distraction being caused by Fraunhofer diffraction. The transparency includes a transparent sheet and a laminated, electrically-conductive grid that defines a densely-packed array of apertures. Each aperture is a modified polygon having multiple curved sides, such that visible light from a remote point source of light is diffracted by the curved sides of each aperture over multiple, diverging, fan-like areas and minimal distraction to a person viewing through the transparency is thereby provided.

REFERENCES:
patent: 3265804 (1966-08-01), Berger et al.
patent: 3389951 (1968-06-01), Eagles et al.
patent: 4323946 (1982-04-01), Traux
patent: 4412255 (1983-10-01), Kuhlman et al.
patent: 4435465 (1984-03-01), Ebneth et al.
patent: 4631214 (1986-12-01), Hasegawa
patent: 4684762 (1987-08-01), Gladfelter
patent: 4731500 (1988-03-01), Otsuka
Postupack, Dennis S. and Pressau, Jean P., "Electroforming EMP Grid for Aircraft Transparencies," 1987.

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