| 摘要 |
An apparatus includes a first flexible material that has a first area with a first texture that produces a first predetermined amount of diffusion of a beam of light, where the first texture produces at least some diffusion in the beam of light. The apparatus also includes a second flexible material attached to a first portion of the first area, where the second flexible material reduces the amount of diffusion of the beam of light produced by the first texture of the first portion of the first area. A light fixture includes a light fixture and the first flexible material coupled to a scrolling mechanism. The scrolling mechanism is operable to position a selected area of the first flexible material such that a beam of light from the light source passes through a first area of the first flexible material.
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