Illumination – Edge lighted panel – Light modifier with emission face combined with light guide...
Reexamination Certificate
2008-07-22
2008-07-22
O'Shea, Sandra L. (Department: 2875)
Illumination
Edge lighted panel
Light modifier with emission face combined with light guide...
C362S330000, C362S339000, C362S615000, C362S620000, C362S626000
Reexamination Certificate
active
07401962
ABSTRACT:
A surface light source apparatus includes a primary light source (1), an optical guide (3) for guiding light emitted from the primary light source and having a light incoming surface (31) and a light outgoing surface (32), a light deflection element (4) arranged adjacent to the light outgoing surface of the optical guide and having a light incoming surface (41) and a light outgoing surface (42), and a light diffusion element (6) arranged adjacent to the light outgoing surface of the light deflection element. The light incoming surface (41) of the light deflection element has a plurality of prism strings arranged substantially parallel to each other and each having two prism surfaces. At least one of the prism surfaces of these prism strings has a prism surface consisting of at least two planes having different inclination angles. As the plane approaches the light going surface, the inclination becomes larger.
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Chiba Issei
Yamashita Tomoyoshi
Dunwiddie Meghan K.
Mitsubishi Rayon Co. Ltd.
Morgan Lewis & Bocklus LLP
O'Shea Sandra L.
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