| 摘要 |
There is provided a lighting assembly comprising a plurality of lighting devices, each of which comprises a patterned diffuser having optical features. Each of the lighting devices is positioned such that if they are illuminated, at least 50, and in some cases 75 or more, percent of light emitted from each of the lighting devices will contact an illumination surface within an area of a defined shape (e.g., square, rectangular, hexagonal, octagonal, etc.), the respective shapes each sharing at least one boundary with another shape. Also, methods of lighting comprising illuminating lighting devices positioned in such a way. |
| 主权项 |
1. A lighting assembly comprising:
at least first, second, third, fourth and fifth lighting devices; and at least first, second, third, fourth and fifth patterned diffusers, each of said patterned diffusers comprising a plurality of optical features and configured to cause at least 75% of light that enters the patterned diffuser to exit the patterned diffuser to produce a rectangular pattern of light, regardless of the pattern of the light which enters the patterned diffuser, the first patterned diffuser positioned to receive light from the first lighting device, the second patterned diffuser positioned to receive light from the second lighting device, the third patterned diffuser positioned to receive light from the third lighting device, the fourth patterned diffuser positioned to receive light from the fourth lighting device, the fifth patterned diffuser positioned to receive light from the fifth lighting device, wherein said first, second, third, fourth and fifth lighting devices and said first, second, third, fourth and fifth patterned diffusers arc configured and positioned such that when each of said first, second, third, fourth and fifth lighting devices is illuminated so that each of said first, second, third, fourth and fifth lighting devices emits light, a planar illumination surface can be positioned such that at least a portion of light emitted from each of said first, second, third, fourth and fifth lighting devices travels in a direction substantially perpendicular to said illumination surface, and:
at least 75 percent of light that passes through the first patterned diffuser projects into a first rectangular area on said surface defined by a first line segment, a second line segment, a third line segment and a fourth line segment;at least 75 percent of light that passes through the second patterned diffuser projects into a second rectangular area on said surface defined by said first line segment, a fifth line segment, a sixth line segment and a seventh line segment;at least 75 percent of light that passes through the third patterned diffuser projects into a third rectangular area on said surface defined by said second line segment, an eighth line segment, a ninth line segment and a tenth line segment;at least 75 percent of light that passes through the fourth patterned diffuser projects into a fourth rectangular area on said surface defined by said third line segment, an eleventh line segment, a twelfth line segment and a thirteenth line segment;at least 75 percent of light that passes through the fifth patterned diffuser projects into a fifth rectangular area on said surface defined by said fourth line segment, a fourteenth line segment, a fifteenth line segment and a sixteenth line segment. |
