| 摘要 |
Traditional school lighting systems in use today generally follow design guideli nes that are 30 or more years old. For their time, they were appropriate. Two new events have significan tly changed the requirements for school lighting. First is the recent upsurge of computer use in schools and the associated problems caused by glare from traditional lighting. The second is the urgent demand for energy saving. School Boards now require energy costs in schools to be reduced, without any reduction in utility. This invention satisfies both of these situations: Firstly , it provides low glare indirect and controlled direct lighting suitable for computer environments and is also ad equate for traditional pen and paper tasks. Secondly, it saves energy by using a single fluorescent lam p, where conventional school lighting systems use two lamps, and it still provides adequate lighting. These results are achieved by utilizing the internal surfaces of the fixture as reflecting surface s, in a specific geometry. This geometry makes full use of all available light output to produce the requir ed light pattern of uplight and downlight. This also maximizes efficiency.
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