Projection screens for two- or three-dimensional front and back

Details Projection screens for two- or three-dimensional front and back Projection screens for two- or three-dimensional front and back

1985-05-20

1987-03-24

Wintercorn, Richard A.

350126, G03B 2156

Patent

active

046520848

ABSTRACT:
The present invention provides projection screens for two- or three-dimensional front and back projections in the form of panes or sheets of plastics, when required with delustering lamina and is characterized in that a plastics having noticeably directed transmission, a transmission degree of approximately 1 to 98%, a scattering power of less than 0.3 and a luminous density coefficient of .epsilon..sub.2 =5.degree. of and exceeding 0.5 is used.

REFERENCES:
patent: 3598640 (1971-08-01), Bennett
patent: 4116911 (1978-09-01), Miyahara et al.
Plexiglas, Prufergebnisse PE 2.4, Rohm GmbH Chemische Fabrik, Oct. 1981, pp. 1-27.
Plexiglas, Rohm GmbH Chemische Fabrik, by Dr. Hans Hettler, 1986/87, pp. 1, 4.
Perspex, Eigenschaften und Bearbeitungsverfahren, (1982), pp. 1-19.

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