초록 ▼

A surface light source device which comprises a light-conducting member consisting of a sheet of transparent material, a linear light source disposed adjacent to an edge surface of the light-conducting member, a diffusion plate disposed on a front surface of the light-conducting member and a reflect

A surface light source device which comprises a light-conducting member consisting of a sheet of transparent material, a linear light source disposed adjacent to an edge surface of the light-conducting member, a diffusion plate disposed on a front surface of the light-conducting member and a reflective plate disposed on a rear side of the light-conducting member. The rear surface of the light-conducting member has depressions or projections. These depressions or projections have rough surfaces. By selecting the shape of the depressions or projections, and controlling the roughness of the rough surfaces, an enhanced uniform brightness distribution is provided.

대표청구항 ▼

A surface light source device comprising: a light-conducting member, a linear light source disposed adjacent to an edge surface of incidence of said light-conducting member, a diffusion plate disposed along a front surface of said light-conducting member, and a reflective surface disposed along a re

A surface light source device comprising: a light-conducting member, a linear light source disposed adjacent to an edge surface of incidence of said light-conducting member, a diffusion plate disposed along a front surface of said light-conducting member, and a reflective surface disposed along a rear exterior surface of said light-conducting member opposite said diffusion plate, said rear exterior surface comprising a plurality of depressions formed therein, said rear exterior surface comprising rough portions only in said depressions.