Selectively light transmitting panel

Details Selectively light transmitting panel Selectively light transmitting panel

G - Physics

02

B

88/99

G02B 5/00 (2006.01) F21S 11/00 (2006.01) F21V 5/02 (2006.01)

Patent

CA 1209834

- 1 - ABSTRACT A one layer panel which transmits rays of light incident at a range of angles of incidence while reflecting rays of light incident within a narrow range of angles of incidence, comprising a plurality of adjacent triangular prisms, the prisms having one right angle, the other two angles being such as to result in the double total internal reflection of rays incident within the narrow range of angles of incidence. In addition, a substantially transparent panel which selectively transmits rays of light within a range of angles of incidence while reflecting rays of light incident within a narrow range of angles of incidence, comprising at least one pair of complementary one layer sheets, each comprising a plurality of adjacent right triangular prisms, the prisms having two other angles such as to result in the double total internal reflection of rays incident within the narrow range of angles of incidence, the prisms of the two sheets fitting together in a complementary relationship and being separated by an air gap.

425960

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