Panel for controlling light passage

A panel suitable for vertical disposition for controlling the passage of light incident upon it, comprising:

• a first planar surface for receiving and passing incident light;
• a second planar surface extending angularly from said first planar surface;
• light refractive means carried by said second planar surface to divert light incident upon said second planar surface;
• said second planar surface being oriented to receive at least some of the light passing said first planar surface, the greater the angle of incidence of the light incident upon said first planar surface, the greater the portion thereof which impinges said second planar surface and the greater the portion of said incident light which is diverted by said light refractive means.

A panel suitable for vertical operation having light passing properties which vary with the angle of incidence of light upon it, comprising:

• a first transparent element which passes light with little deviation in a direction of travel of said light,
• a second transparent element which passes light causing major deviation in the direction of travel of said light,
• said second transparent element having non-parallel surfaces to cause said major deviation by refractions,
• said first and second transparent elements being disposed in an "L" shaped configuration such that a portion of the light which passes said first transparent element impinges said second transparent element, and such that the greater the angle of incidence of light upon said first transparent panel, the greater the portion of light which impinges said second transparent panel.

A panel suitable for vertical orientation having light passing properties which vary with the angle of incidence of light upon it, comprising:

• a plurality of first transparent elements which pass light with insignificant deviation in the direction of said light,
• a plurality of second transparent elements which pass light causing major deviation in the direction of said light,
• a plurality of third transparent elements which pass light with insignificant deviation in the direction of said light,
• said second transparent element having non-parallel surfaces to causesaid major deviation by refractions, said refractions resulting in larger deviations in the direction of said light for larger angles of incidence of light upon said panel, and
• said first and third transparent elements being parallel and joined by a plurality of second transparent elements.