Illumination – Light source and modifier – Adjustable or repositionable modifier
Reexamination Certificate
2000-02-11
2001-12-25
Husar, Stephen (Department: 2875)
Illumination
Light source and modifier
Adjustable or repositionable modifier
C362S278000, C362S282000, C362S284000, C362S297000, C362S306000, C362S341000, C362S433000, C362S457000
Reexamination Certificate
active
06332695
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a luminaire with an adjustable reflector assembly that allows easy glare control and optical performance changes in a luminaire, while in the field. The adjustable reflector assembly has a reflector that rests on a deployment bar with ends that can be pivoted downwardly by turning a screw. Pivoting the deployment bar ends repositions the reflector relative to the lamp center, changing the optical characteristics of the luminaire by reducing high angle glare and redirecting more light downwardly.
BACKGROUND OF THE INVENTION
Luminaires with adjustable reflectors are common to the lighting industry. Typically the reflector is used to direct light into a particular region. An adjustable reflector allows the installer or user to reposition the reflector to optimally redirect the light into or away from a specific area, avoiding the need to move the existing fixture or provide another lamp.
Present day luminaires with adjustable reflectors generally require adding or changing existing components for adjustment. Other devices require removal of screws or other components to adjust the reflector then replacing the screws to secure the reflector in its new position. Some of these luminaires have adjustable reflectors with many pieces and complicated adjustment components. These adjustment procedures can be cumbersome and time consuming, making quick adjustment impracticable or impossible. In addition, the reflectors with complicated adjustment mechanisms have a higher likelihood of failure, and are difficult and expensive to manufacture.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide a luminaire with an adjustable reflector that is simple to adjust and is inexpensive and simple to manufacture.
Another object of this invention is to provide a luminaire with an adjustable reflector that can be easily adjusted without removing or adding components, and that still effectively alters the characteristics of the light.
The foregoing objects are basically attained by providing a reflector assembly that has a reflector mounted on a base and a deployment bar mounted on the base adjacent to the reflector. An actuation screw engages the reflector and the deployment bar and threads into the base. Threading the actuation screw into the base changes the position of the deployment bar and in turn changes the position of the reflector.
By forming the adjustable reflector in this manner, the reflector assembly is limited to a few easy to manufacture, cost effective parts. In addition, the reflector assembly has an adjustable reflector that can be easily adjusted in the field by any user or installer with a twist of a screw, reducing high angle glare and redirecting more light downwardly.
Other objects, advantages and salient features of the invention will become apparent from the following detailed description, which, taken in conjunction with the annexed drawings, discloses a preferred embodiment of the invention.
As used in this application, “up”, “down”, “upper” and “lower” are intended to facilitate the description of the adjustable reflector assembly. Such terms are merely illustrative of the reflector assembly and do not limit the reflector assembly to any specific orientation.
REFERENCES:
patent: 3609337 (1971-08-01), Adra
patent: 5459649 (1995-10-01), Ellion
patent: 5887969 (1999-03-01), Gordin
'Hubbell Incorporated
Bicks Mark S.
Howell Jeffrey J.
Husar Stephen
Ton Anabel
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