A lighting unit comprising a light guide plate, a light source, and a truncated pyramid arranged between the light guide plate and light source and formed as a wedge-shaped member, a base of the truncated pyramid being joined to or placed in close contact with the light guide plate, said light source being located near the truncated pyramid, and wherein a reflecting member is placed to surround the light source and the truncated pyramid, and a light absorbing member is located near a border between the wedge-shaped member and the light guide plate. |