Luminaire for creating effective proximity lighting in a low ambient lighting environment
First Claim
1. A luminaire for illuminating a task surface and a volume of space above and about the task surface, including a limited human occupiable space proximate the task surface, said luminaire comprising:
- a body having a base end and an extension portion extending from said base end, said extension portion having a distal end remote from said base end,means for supporting said body in an operative position relative to a task surface such that the task surface is situated in front of the base end of the body and the extension portion of said body extends above the task surface,task lighting means on said body, said task lighting means being configured to direct light in a directional light distribution pattern toward a task surface when the body is supported in its operative position relative to the task surface, andat least one area light source on the extension portion of said body, said area light source having a light emitting surface of between about 50 square inches and about 150 square inches that faces a space generally above the task surface when the body is supported in its operative position relative to the task surface without any portion of the luminaire being disposed in the space between said area light source and the task surface, said area light source being configured such that light emitted from the light source'"'"'s light emitting surface is emitted in a generally diffuse light distribution pattern for illuminating the space above and about the task surface, and such that the luminance of the light emitting surface of the area light source is between about 1000 cd/m2 and about 3000 cd/m2 when light is emitted therefrom.
1 Assignment
0 Petitions
Accused Products
Abstract
A luminaire is provided for illuminating a task surface and a volume of space above and about the task surface, including a limited human occupiable space proximate the task surface. The luminaire includes a body having a base end and an extension portion extending from the base end. A task lighting element on the body, and suitably at the base of the body, directs light in a directional light distribution pattern toward a task surface. Area light sources on the extension portion of the body emit light in a diffuse light distribution pattern for illuminating the volume of space over the task surface and a limited human occupiable space proximate the task surface.
20 Citations
17 Claims
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1. A luminaire for illuminating a task surface and a volume of space above and about the task surface, including a limited human occupiable space proximate the task surface, said luminaire comprising:
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a body having a base end and an extension portion extending from said base end, said extension portion having a distal end remote from said base end, means for supporting said body in an operative position relative to a task surface such that the task surface is situated in front of the base end of the body and the extension portion of said body extends above the task surface, task lighting means on said body, said task lighting means being configured to direct light in a directional light distribution pattern toward a task surface when the body is supported in its operative position relative to the task surface, and at least one area light source on the extension portion of said body, said area light source having a light emitting surface of between about 50 square inches and about 150 square inches that faces a space generally above the task surface when the body is supported in its operative position relative to the task surface without any portion of the luminaire being disposed in the space between said area light source and the task surface, said area light source being configured such that light emitted from the light source'"'"'s light emitting surface is emitted in a generally diffuse light distribution pattern for illuminating the space above and about the task surface, and such that the luminance of the light emitting surface of the area light source is between about 1000 cd/m2 and about 3000 cd/m2 when light is emitted therefrom. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A luminaire for illuminating a task surface and a volume of space above and about the task surface, including a limited human occupiable space proximate the task surface, said luminaire comprising:
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a body structure having a base end and extending upwardly from said base end to form an extension portion having a distal end, means for supporting said body in an operative position relative to a task surface wherein the task surface is situated in front of the base end of the body and the extension portion of said body extends above the task surface, task light means on said body for providing light in a directional light distribution pattern, wherein, when said body is supported in its operative position relative to the task surface, the light provided by said task light means is directed toward the task surface, and a plurality of area light sources distributed along the extension portion of said body from the base end to the distal end of said extension portion, each of said area light sources having a light emitting surface generally facing a space above the task surface when said body is supported in its operative position relative to the task surface without any portion of the luminaire being disposed in the space between said area light sources and the task surface, the light emitting surfaces of said area light sources collectively having a total surface area of between about 50 square inches and about 150 square inches and being configured such that light emitted therefrom is emitted in a generally diffuse light distribution pattern, and such that the luminance of the light emitting surfaces of said area light sources is between about 1000 cd/m2 and about 3000 cd/m2 when light is emitted therefrom. - View Dependent Claims (13, 14, 15)
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16. A luminaire for illuminating a task surface and a volume of space above and about the task surface, including a limited human occupiable space proximate the task surface, said luminaire comprising:
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a body structure having a base end and extending upwardly from said base end to form an elongated extension portion having a substantially vertical portion, a substantially horizontal portion and a distal end, means for supporting said body in an operative position relative to a task surface wherein the task surface is situated in front of the base end of the body and the extension portion of said body extends above the task surface so that the substantially vertical and substantially horizontal portions of said extension portion face the space above the task surface, a task light means at the base end of said body, said task light means being configured to direct light in a directional light distribution pattern in a forward and downward direction onto a task surface in front of the base end of the body, and a plurality of area light sources distributed along the substantially vertical and substantially horizontal portions of said extension portion from above the task light means at the base end of said body to the distal end of said extension portion, each of said area light sources having a light emitting surface generally facing a space above the task surface when said body is supported in its operative position relative to the task surface without any portion of the luminaire being disposed in the space between said area light sources and the task surface, said area light sources being configured to emit light in a generally diffuse light distribution pattern wherein, when said body is supported in its operative position relative to the task surface, the light emitting surfaces of said area light sources can illuminate the space above and about the task surface, and the area light sources further being configured such that the luminance of said light emitting surfaces is between about 1000 cd/m2 and about 3000 cd/m2 when light is emitted therefrom. - View Dependent Claims (17)
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Specification