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AssigneeKoninklijke Philips Electronics N.V.
InventorsLudovicus Haenen, Augustinus Meijers, Edwin Van Lier
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A light-guiding device having a coupling-in surface (46) for coupling-in light radiation substantially in a first main direction (41) perpendicular to said coupling-in surface (26;46), and having a coupling-out surface (47,48,49) for coupling-out light radiation substantially in a second main direction (42) perpendicular to said coupling-out surface. The coupling-out surface has other dimensions than the coupling-in surface (46). The device comprises a number of plate-like light-guiding members (43,44,45), each having a substantially rectangular lateral coupling-in surface and a substantially rectangular lateral coupling-out surface (47,48,49). A number of the plate-like light-guiding members are stacked together to create the coupling-in surface (46) formed by said lateral coupling-in surfaces abutting each other at their long sides. The coupling-out surface (47,48,49) is created by said lateral coupling-out surfaces abutting each other at their short sides.
A light-guiding device having a coupling-in surface for coupling-in light radiation substantially in a first main direction perpendicular to said coupling-in surface, and having a coupling-out surface for coupling-out light radiation substantially in a second main direction perpendicular to said coupling-out surface, wherein the coupling-out surface has dimensions other than those of the coupling-in surface, characterized in that the device comprises a number of plate-like light-guiding members, each having a substantial rectangular lateral coupling-in surface and a substantially rectangular lateral coupling-out surface, wherein a number of the plate-like light-guiding members are stacked together so as to create the coupling-in surface formed by said lateral coupling-in surfaces abutting each other at their long sides, and wherein the coupling-out surface is created by said lateral coupling-out surfaces abutting each other at their short sides.
A method of guiding light through a light-guiding device wherein light radiation is coupled in substantially in a first main direction perpendicular to the coupling-in surface, wherein light radiation is coupled out substantially in a second main direction perpendicular to the coupling-out surface, which coupling-out surface has dimensions other than those of the coupling-in surface, characterized in that the light radiation is guided by a number of plate-like light-guiding members, each having a substantially rectangular lateral coupling-in surface and a substantially rectangular lateral coupling-out surface, wherein a number of the plate-like light-guiding members are stacked together so as to create the coupling-in surface formed by said lateral coupling-in surfaces abutting each other at their long sides, and wherein the coupling-out surface is created by said lateral coupling-out surfaces abutting each other at their short sides.
Dependencies are inferred from the claim text.