Surface illumination method using point light source, linear light source device, and surface illumination device using this linear light source device

摘要

A highly directional point light source I, a linear light converting means II for converting light from the point light source into linear light, a linear light diffusing means III for diffusing the linear light, and this diffused light is irradiated And a planar illumination means IV for emitting planar illumination light, and converts the light from the point light source I into linear light by the linear light conversion means II, and the converted linear light is diffused into linear light. The light is diffused in a predetermined direction by means III, and the diffused light is irradiated onto the planar illumination means IV to illuminate it as planar light.