Sun shield

The invention relates to a sun shield (1) for controlling the light transmission from the outside to the inside of a building or the like, where the sun shield (1) comprises a plurality of light transmission channels or cells (2) thereby forming a three-dimensional structure with an external surface (26) and an internal surface (27), the inner surface (27) facing the inside of said building or the like, said channels or cells (2) being defined by one or more inner surface(s) (3, 4, 5, 6, 7, 8) and by a longitudinal axis (X), said axis (X) extending at an angle (±) relative to horizontal. According to a specific embodiment of the sun shield according to the invention, the light transmission channels or cells (2) are of a hexagonal cross-section and one or more of said inner surfaces (3, 4, 5, 6, 7, 8) of the light transmission channels or cells (2), or portions of one or more of these surfaces, are provided with light reflective means (9, 18, 24). According to a specific embodiment, the light reflective means are in the form of a plurality of circular islands (9) provided on the three lower inner surfaces (6, 7, 8) of the individual cells (2).