Patents Assigned to Lexalite International Corporation
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Patent number: 6767106Abstract: An edge-lit luminaire includes a panel formed of a transparent material. The panel includes first and second opposing surfaces. At least one edge light source is positioned proximate to the panel. A plurality of prismatic reflective/refractive elements is spaced apart on a predefined pattern on the second surface. The plurality of prismatic reflective/refractive elements have a predefined contour for accurate ray direction control. The predefined pattern on the second surface includes predefined gradient spacing and size variables of the prismatic reflective/refractive elements for providing uniform ray emission across the panel. The plurality of prismatic reflective/refractive elements have a predefined relative spacing of the prismatic reflective/refractive elements based upon a position relative to the light source. Also the predefined relative size of each of the prismatic reflective/refractive elements can be based upon its position relative to the light source.Type: GrantFiled: May 8, 2000Date of Patent: July 27, 2004Assignee: Lexalite International CorporationInventors: Josh Barnes, Thomas F. Barnes, II, Paul Carlton Belding, Joel Robinson
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Patent number: 6698908Abstract: An improved optical assembly includes a reflector/refractor device and a reflector collar provided for enhanced directional illumination control. The reflector/refractor has a predefined shape and has a plurality of reflector/refractor prisms on an exterior body surface for reflecting and refracting light. A light source is disposed within the reflector/refractor substantially along a central vertical axis of the reflector/refractor. The reflector collar supports the reflector/refractor and attaches the reflector/refractor to a luminaire ballast. The reflector collar has a predetermined contour and a plurality of reflector impressions formed into the predetermined contour. The predetermined contour and the plurality of reflector impressions provide directional illumination control for the optical assembly.Type: GrantFiled: March 29, 2002Date of Patent: March 2, 2004Assignee: Lexalite International CorporationInventors: Ronald L. Sitzema, Jr., Gwen Barber
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Publication number: 20030185012Abstract: An improved optical assembly includes a reflector/refractor device and a reflector collar provided for enhanced directional illumination control. The reflector/refractor has a predefined shape and has a plurality of reflector/refractor prisms on an exterior body surface for reflecting and refracting light. A light source is disposed within the reflector/refractor substantially along a central vertical axis of the reflector/refractor. The reflector collar supports the reflector/refractor and attaches the reflector/refractor to a luminaire ballast. The reflector collar has a predetermined contour and a plurality of reflector impressions formed into the predetermined contour. The predetermined contour and the plurality of reflector impressions provide directional illumination control for the optical assembly.Type: ApplicationFiled: March 29, 2002Publication date: October 2, 2003Applicant: LEXALITE INTERNATIONAL CORPORATIONInventors: Ronald L. Sitzema, Gwen Barber
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Publication number: 20030125406Abstract: In brief, a lighting fixture is provided. The lighting fixture has both a transmitted and reflected light component employing a polymeric material which has an appearance, in varying degrees, of white. The material has internal elements which can be varied to be either highly reflective or permit efficient diffuse transmission of incident light rays. The ratio of reflected to transmitted light and the degree of diffusion are tailored to the application, light source and desired appearance. The material is adapted for providing a selected diffuse transmission component of a total fixture output. The material provides a set diffuse transmission component of greater than 1% and less than 25% where the material is formed by pigmenting a transparent material with a white pigment.Type: ApplicationFiled: December 13, 2002Publication date: July 3, 2003Applicant: LEXALITE INTERNATIONAL CORPORATIONInventors: Thomas F. Barnes, James T. Hamilton
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Publication number: 20030109593Abstract: In brief, a lighting fixture is provided. The lighting fixture has both a transmitted and reflected light component employing a polymeric material which has an appearance, in varying degrees, of white. The material has internal elements which can be varied to be either highly reflective or permit efficient diffuse transmission of incident light rays. The ratio of reflected to transmitted light and the degree of diffusion are tailored to the application, light source and desired appearance. The material is adapted for providing a selected diffuse transmission component of a total fixture output. The material provides a set diffuse transmission component of greater than 1% and less than 25% where the material is formed by pigmenting a transparent material with a white pigment.Type: ApplicationFiled: November 25, 2002Publication date: June 12, 2003Applicant: LEXALITE INTERNATIONAL CORPORATIONInventors: Thomas F. Barnes, James T. Hamilton
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Patent number: 6575601Abstract: An optical assembly enables improved optical control of an uplight illumination component and a downward illumination component. The optical assembly includes a reflector/refractor and a shroud carried by the reflector/refractor. The reflector/refractor has a predefined shape and has a plurality of reflector/refractor prisms on an exterior body surface for reflecting and refracting light. The shroud has a plurality of prisms disposed proximate to the reflector/refractor prisms for providing optical control of incident light from the reflector/refractor. The shroud is formed substantially corresponding to the predefined shape of the reflector/refractor, surrounding and spaced from the reflector/refractor exterior body surface. The shroud is formed, for example, by vacuum forming or by injection molding technique. The shroud provides optical control of incident light from the reflector/refractor, generally refracting incident light from the reflector/refractor.Type: GrantFiled: March 15, 2002Date of Patent: June 10, 2003Assignee: Lexalite International CorporationInventors: Ronald L. Sitzema, Jr., Paul D. Cardwell
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Patent number: 6550938Abstract: In brief, a lighting fixture is provided. The lighting fixture has both a transmitted and reflected light component employing a polymeric material which has an appearance, in varying degrees, of white. The material has internal elements which can be varied to be either highly reflective or permit efficient diffuse transmission of incident light rays. The ratio of reflected to transmitted light and the degree of diffusion are tailored to the application, light source and desired appearance. The material is adapted for providing a selected diffuse transmission component of a total fixture output. The material provides a set diffuse transmission component of greater than 1% and less than 25% where the material is formed by pigmenting a transparent material with a white pigment.Type: GrantFiled: February 9, 2000Date of Patent: April 22, 2003Assignee: Lexalite International CorporationInventors: Thomas F. Barnes, II, James T. Hamilton
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Patent number: 5967648Abstract: A luminaire having both a direct and indirect lighting component is provided. The luminaire includes a fixture including a lamp. A neutral density polymeric material is disposed below the lamp. The neutral density polymeric material includes a polymeric substrate carrying a predetermined pattern for reflecting and transmitting incident light from the lamp.Type: GrantFiled: February 9, 1998Date of Patent: October 19, 1999Assignee: Lexalite International CorporationInventors: Thomas F. Barnes, II, Joel E. Robinson, Dale A. Troppman
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Patent number: 5743634Abstract: In brief, the objects and advantages of the present invention are achieved by a reflector for an ornamental luminaire. The reflector includes a member formed of a metal material, the metal member having a predetermined thickness and being perforated with spaced apart apertures of a selected diameter and selected density. The metal member has a predefined reflector shape with the spaced apart apertures and the predefined reflector shape arranged to provide control of both an upper illumination distribution and a lower illumination distribution. The reflector metal member includes a plurality of positioning portions arranged for press-fit engagement within the ornamental luminaire. A hydroforming technique is used to form the metal member into the predefined reflector shape. The reflector is trimmed via a stamping process to a desired diameter and to provide the plurality of positioning portions in a precompression state.Type: GrantFiled: July 31, 1996Date of Patent: April 28, 1998Assignee: Lexalite International CorporationInventors: Ronald L. Sitzema, Joel E. Robinson, Robert D. Towne, Jr.
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Patent number: 5444606Abstract: A combination of a prismatic reflector and a prismatic lens is provided for use with lighting fixtures. A reflector body has a substantially parabolic contour defining an interior cavity. The reflector body includes a plurality of prisms for receiving, transmitting and reflecting light. A lens body has a first mating surface engaging the reflector body, an opposed inverted conical surface, and a sloping sidewall extending between the mating surface and the opposed inverted conical surface. The mating surface of the lens body has a larger diameter than the opposed inverted conical surface. The opposed inverted conical surface includes a plurality of prisms for receiving and for redirecting light.Type: GrantFiled: February 10, 1994Date of Patent: August 22, 1995Assignee: Lexalite International CorporationInventors: Josh T. Barnes, Paul C. Belding
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Patent number: 5143446Abstract: An improved lighting fixture includes a light reflecting and/or light transmitting member for reflecting or transmitting visible light. A light transmitting film is disposed adjacent the light reflecting or transmitting member. The light transmitting film is formed of a glutarimide acrylic copolymer. The glutarimide acrylic copolymer film provides protection to the light reflecting and/or transmitting member from damaging effects of ultraviolet radiation and is substantially resistant to ultraviolet radiation.Type: GrantFiled: February 11, 1992Date of Patent: September 1, 1992Assignee: Lexalite International CorporationInventors: Josh T. Barnes, Thomas F. Barnes, Earl E. Smith, Dale A. Troppman
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Patent number: 4839781Abstract: 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.Type: GrantFiled: June 21, 1988Date of Patent: June 13, 1989Assignee: Lexalite International CorporationInventors: Josh T. Barnes, Ronald L. Sitzema, Jr.
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Patent number: 4175661Abstract: A stackable light refractor comprises an annular hollow tubular shaped element of light transmissive material having a large end and a pair of spaced apart inner and outer surfaces tapering toward a small end. The outer surface of the refractor includes a plurality of annular outwardly projecting ridges of prism shaped cross-section spaced between the larger and smaller ends. One of the ridges, spaced a distance closer to the larger end than the smaller end is substantially larger than the adjacent ridges and extends outwardly of the adjacent ridges on either side.Type: GrantFiled: August 28, 1978Date of Patent: November 27, 1979Assignee: Lexalite International CorporationInventor: Jocelyn T. Barnes
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Patent number: D367337Type: GrantFiled: February 10, 1994Date of Patent: February 20, 1996Assignee: Lexalite International CorporationInventors: Josh T. Barnes, Paul C. Belding