Luminaires having aperture-modifying structures for...

Details Luminaires having aperture-modifying structures for... Luminaires having aperture-modifying structures for...

2005-09-13

2005-09-13

Alavi, Ali (Department: 2875)

Illumination

Light source and modifier

Adjustable or repositionable modifier

C362S147000, C362S217060

Reexamination Certificate

active

06942364

ABSTRACT:
Luminaires particularly useful for ceiling mounting in either recessed or surface-mounted applications and intended for “washing” light over an adjacent wall, the “wall wash” luminaires of the invention are configured in preferred embodiments for operation with elongated lamping and particularly tubular fluorescent lamping including T5 lamps. The present luminaires are usually provided with elongated and other apertures, certain of which are often referred to as “small” apertures, conformed by shaping of at least one elongated edge thereof to minimize alternating relatively light and dark striations on adjacent walls. Luminaires according to the invention having relatively narrow elongated apertures function to transition abrupt changes in luminance imaged onto an adjacent wall by alteration of aperture opening, such as by an extension of structure from one elongated edge of such an aperture, thereby to produce a more smooth vertical light distribution over the wall.

REFERENCES:
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patent: 5142459 (1992-08-01), Swarens et al.
patent: 5535110 (1996-07-01), Ling
patent: 5800050 (1998-09-01), Leadford
patent: 6342695 (2002-01-01), Ramer et al.
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patent: 6382817 (2002-05-01), Chelf
patent: 6561670 (2003-05-01), Jongewaard et al.

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