Control device the distribution of the light intensity control device density luminous flux.

摘要

A method of controlling the distribution of light, to distribute light from a light source using a transparent body which performs an operation selected from the group consisting of diffusion, refraction, division and a combination of diffusion and refraction, said body (5, 8) transparent to a first surface and a second surface, the light source light incident on the first surface of the body (5, 8) transparent, and being emitted from the second surface of the body (5, 8) transparent, characterized by disposing said transparent body (5, 8), a plate-like or film or cloth form horizontally above two buildings (2, 6) separated by a space.