A light guide (10, 100, 200, 300, 400, 500, 700, 900, 1000, 2000) comprising: a light receiving surface (12, 312, 712, 912); a light transmission region (14, 314, 714, 914) in optical communication with the light receiving surface; a light emission region (16, 316, 716, 916) comprising a wedge shape cross section, the light emission region (16, 316, 716, 916) being in optical communication with the light transmission region, the light emission region (16, 316, 716, 916) comprising: a first major surface (18, 218, 318, 418, 718, 918, 1018, 2018); a second major surface (22, 222, 322, 422, 722, 922, 1022, 2022); wherein the first major surface and the second major surface taper toward each other to define a distal end; and whereby substantially all light received at the light receiving surface internally reflects through the transmission region before entering the emission region; characterized in that said first major surface comprises a plurality of vertically extending flutes (46, 320, 423, 746, 1046); and in that one or both of the first and second major surfaces comprise a plurality of steps (750, 950, 1050, 2050) disposed along a length thereof, wherein the plurality of steps each comprises a first surface and a second surface, the first and second surfaces defining an angle therebetween, wherein the angle is between about 75 degrees and about 110 degrees, or about 90 degrees. a light receiving surface (12, 312, 712, 912); a light transmission region (14, 314, 714, 914) in optical communication with the light receiving surface; a light emission region (16, 316, 716, 916) comprising a wedge shape cross section, the light emission region (16, 316, 716, 916) being in optical communication with the light transmission region, the light emission region (16, 316, 716, 916) comprising: a first major surface (18, 218, 318, 418, 718, 918, 1018, 2018); a second major surface (22, 222, 322, 422, 722, 922, 1022, 2022); wherein the first major surface and the second major surface taper toward each other to define a distal end; and whereby substantially all light received at the light receiving surface internally reflects through the transmission region before entering the emission region; characterized in that said first major surface comprises a plurality of vertically extending flutes (46, 320, 423, 746, 1046); and in that one or both of the first and second major surfaces comprise a plurality of steps (750, 950, 1050, 2050) disposed along a length thereof, wherein the plurality of steps each comprises a first surface and a second surface, the first and second surfaces defining an angle therebetween, wherein the angle is between about 75 degrees and about 110 degrees, or about 90 degrees. a first major surface (18, 218, 318, 418, 718, 918, 1018, 2018); a second major surface (22, 222, 322, 422, 722, 922, 1022, 2022); wherein the first major surface and the second major surface taper toward each other to define a distal end; and whereby substantially all light received at the light receiving surface internally reflects through the transmission region before entering the emission region; characterized in that said first major surface comprises a plurality of vertically extending flutes (46, 320, 423, 746, 1046); and in that one or both of the first and second major surfaces comprise a plurality of steps (750, 950, 1050, 2050) disposed along a length thereof, wherein the plurality of steps each comprises a first surface and a second surface, the first and second surfaces defining an angle therebetween, wherein the angle is between about 75 degrees and about 110 degrees, or about 90 degrees.