| 摘要 |
<p>410D-5460 An indoor lighting fixture provides semi-indirect symmetrical light distribution. The fixture, which is adapted to be positioned adjacent the ceiling of a room, comprises a high intensity gaseous discharge lamp mounted at its base on the ceiling and extending downwardly into a box-shaped reflector open at its top with reflective sides and a diffuser panel at its bottom. Positioned in the reflector and surrounding the lower portion of the lamp is a dish-shaped semi-transparent reflector which reflects a portion of the incident light toward the ceiling and transmits a portion of the light to the area below the fixture. The arrangement is such that direct and indirect light are distributed by the fixture, while glare is avoided by shielding the light source from direct view of the room occupants.</p> |
