Composite used for light control of privacy

Details Composite used for light control of privacy Composite used for light control of privacy

1997-05-19

1999-11-30

Loney, Donald

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428142, 428161, 428164, 428172, 428192, 428913, 283107, 283109, 283901, B32B 328, B42D 1500

Patent

active

059939400

ABSTRACT:
A composite including a polymeric film having a first generally planar major surface and an opposite second major surface defined by a multiplicity of elongate parallel contiguous ridge portions. The ridge portions each have a generally triangular cross section and elongate obscured and transmitting second major surface portions intersecting at the apex of the ridge with the obscured second major surface portion being on the side of the ridge generally facing a first end of the sheet and the transmitting second major surface portions being on the side of the ridge portions adjacent a second end of the sheet. The film can provide visual transmission between its first major surface and the transmitting second major surface portions while coatings along the obscured second major surface portions prevent viewing of visual images through the film; whereas the composite can also provide light transmission between the first major surface and the transmitting second major surface portions, while the coatings along the obscured second major surface portions restrict light transmission.

REFERENCES:
patent: 3689346 (1972-09-01), Rowland
patent: 4127693 (1978-11-01), Lemelson
patent: 4812709 (1989-03-01), Dudasik
patent: 5171624 (1992-12-01), Walter
patent: 5301981 (1994-04-01), Nesis
Neues Aus Der Technik, No. 4, Dec. 15, 1988 Wurzburg DE, p. 4, "Light-Valve Display" Translation.
IBM Technical Disclosure Bulletin, vol. 14, No. 8, Jan. 1972 New York, US, p. 2463, K. L. Foster et al. "Antiglare and reflection covers for transparent surfaces".
International Search Report, PCT/US95/07883.
Enclosed Drawing of Solar Control Material from Siemens Corp.

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