US 7,470,045 B2
Assembly for directed shading of outside lighting
Udo Bansbach, Berlin (Germany); and Dieter Albert, Berlin (Germany)
Assigned to Semperlux AG, Berlin (Germany)
Filed on Sep. 26, 2006, as Appl. No. 11/528,184.
Claims priority of application No. 10 2005 047 746 (DE), filed on Sep. 28, 2005.
Prior Publication US 2007/0070632 A1, Mar. 29, 2007
Int. Cl. F21V 5/00 (2006.01)
U.S. Cl. 362—327  [362/308; 362/332; 362/336; 362/339] 19 Claims
OG exemplary drawing
 
1. A device for shielding outside lights comprising:
mounting means for mounting a light source for emitting radiation;
a substantially cylindrical, transparent shield body;
said shield body having a surface which is provided with a zigzag-shaped profile in a vertical direction, said surface being adapted to deflect radiation incident thereon in a desired downward direction;
wherein said zigzag-shaped profile has a plurality of triangular projections in a first portion, said triangular projections in said first portion being configured in such a way that emitted radiation from a light source mounted in the mounting means is fully reflected in a desired direction when passing through said first portion of said shield body;
wherein said zigzag-shaped profile has a further plurality of triangular projections in a second portion, said further triangular projections in said second portion being configured in such a way that emitted radiation from a light source mounted in the mounting means is diffracted in a desired downward direction when passing through said second portion of said shield body;
wherein said triangular projections of said zigzag-shaped profiles in said first and second portions have straight sides; and
wherein said zigzag-shaped profile is asymmetric regarding a horizontal plane defined by the center of a light source mounted in the mounting means.