Round illumination device

G - Physics – 02 – B

Patent

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Details

G02B 6/00 (2006.01)

Patent

CA 2726151

The invention provides a substantially round illumination device (1) comprising a light source (10) and a substantially round waveguide (20). The waveguide (20) comprises a first waveguide surface (21), a second waveguide surface (22), a substantially round waveguide entrance window (23), a substantially round waveguide edge window (24), and a central axis (100). The first waveguide surface (21) or the second waveguide surface (22) or both the first waveguide surface (21) and the second waveguide surface (22) further comprise a plurality of elongated structures (200) each having an elongation axis (201) substantially parallel to a radius (101) perpendicular to the central axis (100).

L'invention porte sur un dispositif d'éclairage sensiblement rond (1) comprenant une source de lumière (10) et un guide d'ondes sensiblement rond (20). Le guide d'ondes (20) comprend une première surface de guide d'ondes (21), une seconde surface de guide d'ondes (22), une fenêtre d'entrée de guide d'ondes sensiblement ronde (23), une fenêtre marginale de guide d'ondes sensiblement ronde (24) et un axe central (100). La première surface de guide d'ondes (21) ou la seconde surface de guide d'ondes (22), ou la première surface de guide d'ondes (22) et la seconde surface de guide d'ondes (22) comprennent en outre une pluralité de structures allongées (200) dotées chacune dun axe d'allongement (201) sensiblement parallèle à un rayon (101) perpendiculaire à l'axe central (100).

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