Reflector/refractor
DCFirst Claim
1. A reflector/refractor device used with a lighting fixture comprising:
- a body having a predetermined profile, said body having an outside surface and an inside surface and defining a cavity;
illuminating means for emitting light disposed within said cavity substantially along a central vertical axis of said body; and
said body including a series of sectional zones defining said predetermined profile for selectively providing a variable predetermined light distribution pattern determined by a vertical location of said illuminating means, said sectional zones including;
one or more zones having a plurality of substantially vertical prism means formed on said outside surface for reflecting a first portion of the emitted light substantially unaffected by the vertical location of said illuminating means;
at least one sectional zone including a plurality of prism means for selectively varying component proportions of refracted and reflected light portions responsive to a change in an incident angle of the emitted light, said incident angle being selectively variable by the vertical location of said illuminating means, said refracted light component portion having an increased magnitude responsive to a decreased incident angle of the emitted light and said reflected light component portion having a decreased magnitude responsive to a decreased incident angle of the emitted light.
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Accused Products
Abstract
A reflector/refractor device is provided for use with a variety of lighting fixtures and light sources. The reflector/refractor device includes a body having a predetermined profile and defining a cavity with the body having an inside surface and an outside surface. An illuminating source for emitting light is disposed within the cavity substantially along a central vertical axis of the body. The body includes a series of sectional zones for reflecting and refracting light. The exterior surface of the device includes a plurality of substantially vertical prisms consisting of reflective elements, refractive elements and elements that may be either reflective or refractive depending on light center location. These reflective or refractive elements act in combination to selectively vary light distribution characteristics of vertical and lateral angles, and intensities, by vertical displacement of the illuminating lamp source.
102 Citations
20 Claims
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1. A reflector/refractor device used with a lighting fixture comprising:
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a body having a predetermined profile, said body having an outside surface and an inside surface and defining a cavity; illuminating means for emitting light disposed within said cavity substantially along a central vertical axis of said body; and said body including a series of sectional zones defining said predetermined profile for selectively providing a variable predetermined light distribution pattern determined by a vertical location of said illuminating means, said sectional zones including; one or more zones having a plurality of substantially vertical prism means formed on said outside surface for reflecting a first portion of the emitted light substantially unaffected by the vertical location of said illuminating means; at least one sectional zone including a plurality of prism means for selectively varying component proportions of refracted and reflected light portions responsive to a change in an incident angle of the emitted light, said incident angle being selectively variable by the vertical location of said illuminating means, said refracted light component portion having an increased magnitude responsive to a decreased incident angle of the emitted light and said reflected light component portion having a decreased magnitude responsive to a decreased incident angle of the emitted light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A reflector/refractor device used with a lighting fixture comprising:
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a body having a predetermined generally bowl shaped profile, said body having an outside surface and an inside surface and defining a cavity; illuminating means for emitting light disposed within said cavity substantially along a central vertical axis of said body; and said body including a series of sectional zones defining said predetermined profile for reflecting and refracting light, each of said sectional zones having predetermined light distribution characteristics, said predetermined light distribution characteristics of at least one of said sectional zones being selectively variable by a vertical movement of said illuminating means, said at least one sectional zone segment having a substantially smooth inside surface and including a plurality of substantially vertical prism means formed on the outside surface, said prism means configured for selectively varying component proportions of refracted and reflected light portions responsive to a change in an incident angle of the emitted light, said incident angle being selectively variable by the vertical movement of said illuminating means, said prism means configured for either refracting or reflecting light responsive to an incident angle of said emitted light less than or greater than a critical angle of said prism means and said prism means being responsive to a decreased incident angle of the emitted light for providing a first component refracted light portion having an increased magnitude and a second component reflected light portion having a decreased magnitude. - View Dependent Claims (16, 17, 18, 19)
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20. A reflector/refractor device used with a lighting fixture comprising:
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a body having a predetermined inverted bowl-shaped profile, said body having an outside surface and an inside surface and defining a cavity; an illuminating lamp source disposed within said cavity substantially along a central vertical axis of said body; and said body including a series of sectional zones defining said predetermined profile for selectively providing a variable predetermined light distribution pattern determined by a vertical location of said illuminating means, a portion of said outside surface corresponding to at least one sectional zone formed with a plurality of substantially vertical prism elements, said vertical prism elements having included angles in a range between 87° and
89°
30'"'"' or between 90°
30'"'"' and 93°
,said vertical prism elements within said at least one sectional zone including prism surface means for selectively varying both refracted and reflected light portions responsive to a change in an incident angle of the emitted light, said incident angle being selectively variable by the vertical location of said illuminating means, said prism means configured for either refracting or reflecting light responsive to an incident angle of said emitted light less than or greater than a critical angle of said prism means, said prism surface means providing a first refracted light portion having an increased magnitude responsive to a decreased incident angle of the emitted light and a second reflected light portion having a decreased magnitude responsive to a decreased incident angle of the emitted light, whereby said predetermined light distribution pattern is selectively determined by the vertical location of said illuminating means.
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Specification