LED-based direct-view luminaire with uniform lit appearance

摘要

Disclosed are methods and apparatus related to an LED-based luminaire (10) that redirects substantially all light output from LEDs (40) thereof off of an interior reflective surface at least once prior to the light exiting the LED-based luminaire (10). In some embodiments, an LED-based luminaire (10) is provided that includes a housing having a light output opening (20), a reflective interior surface, a diffusing cover lens (30) across the light output opening (20), and a plurality of optics (50) that are configured to redirect light output from a plurality of LEDs (40) within the lighting fixture (10).

主权项

1. A LED lighting fixture, comprising:
a housing having a light output opening, a LED support area facing said light output opening, and a plurality of diffusely reflective walls extending between said LED support area and said light output opening; a plurality of LEDs adjacent said LED support area, each of said LEDs selectively generating a LED light output having a component emitting directly toward said light output opening; said LEDs including a first longitudinally extending row of LEDs and a second longitudinally extending row of LEDs in parallel relation to said first longitudinally extending row of LEDs, wherein said LEDs of said first longitudinally extending row of LEDs are positionally offset from said LEDs of said second longitudinally extending row of LEDs in a direction along the length of said first and second longitudinally extending rows; a plurality of blocking optics, each of said blocking optics provided over a different, respective LED of said plurality of LEDs and below said output opening and redirecting at least said component of said LED light output of said respective LED toward at least one of said diffusely reflective walls, wherein at least one blocking optic of said plurality of blocking optics is configured to direct at least one other light component, of said LED light output of said respective LED, above an upper extent of said at least one blocking optic as said at least one other light component exits through a lateral surface of said at least one blocking optic; and a diffusing cover lens provided across said light output opening.