Surface light source panel for one-side light source

Abstract

Abstract PURPOSE:To obtain much brighter and uniform luminance by arranging the part having a maximum area ratio of an irregular reflection layer in a position, which is made deviated to the opposite end face of a primary light source, and decreasing the area ratio of the irregular reflection layer symmetrically in the manner of no stage in both side direction from the deviated position. CONSTITUTION:A maximum area ratio part 20 of an irregular reflection layer 18 is arranged in the position, which is deviated from a central position to an end reflection part 14 side, between a primary light source 13 and the end reflection part 14 in the other end face side and the area ratio of the irregular reflection layer 18 is symmetrically decreased in the manner of no stage in the both side direction from the deviated position. Thus, light incident by the primary light source 13 advances in a panel by the irregular reflection layer 18, for which the area ratio is increased in the manner of no stage in the beginning, and the surface of the panel is brightly lighted up. On the other hand, in the side of the end reflection part 14 rather than the maximum area ratio part 20, the composite light quantity of the incident light, which advances forward while being reduced, and light reflected by the end reflection part 14 is adjusted by the irregular reflection part 18, which is reversely decreased in the manner of no stage, and the panel is brightly lighted up. Then, uniformity is secured.

Inventors

• 👤 Shinzo Murase
• 👤 新三 村瀬

Bibliographic Details