Roger F Buelow

US Patent:

20020106170, Aug 8, 2002

Filed:

Feb 2, 2001

Appl. No.:

09/776208

Inventors:

John Davenport - Lyndhurst OH, US
Roger Buelow - Cleveland OH, US

International Classification:

G02B006/04

US Classification:

385/115000, 385/147000, 385/901000

Abstract:

An exemplary embodiment of the invention provides a multi-stranded fiberoptic light delivery system for delivering light to a plurality of fixtures. Each of the fixtures receives light from one or more active strands of a fiberoptic cable. A light source provides a light beam for transmission through the cable. A light-coloring device receives the light beam and sequentially imparts to the light beam different colors. A rod is interposed in the light beam between the color wheel and the fixtures. The rod has an inlet for receiving the light beam and an outlet for transmitting light to the cable. The rod has a length at least high enough to cause it to pass to all active strands a portion of the light of a color just starting to be received at its inlet.

US Patent:

20030026097, Feb 6, 2003

Filed:

Jul 31, 2001

Appl. No.:

09/919542

Inventors:

John Davenport - Lyndhurst OH, US
Roger Buelow - Cleveland Heights OH, US
David Lin - Castro Valley CA, US
Ray Buchina - Mentor OH, US
Gregory Frankiewicz - LaGrange IL, US

International Classification:

F21V029/00
F21K002/00

US Classification:

362/267000, 362/293000, 362/276000, 362/802000, 362/265000

Abstract:

A light fixture with a submersible enclosure for an electric lamp (e.g, HID lamp) is disclosed. The fixture includes a ballast for supplying power to a high intensity discharge lamp. A submersible enclosure seals the lamp from water in normal operation. The fixture includes a water-sensitive circuit having a conductance that increases in response to water that leaks into the enclosure for conducting current from the ballast and limiting the ballast voltage. Alternatively, the submersible enclosure may contain a power lead for supplying power to an electrical load such as a lamp ballast, a non-ballasted lamp, or a color wheel. The power lead includes a fuse region that corrosively reacts in the presence of leaked water in the container, so as to sufficiently wither away the fuse region and terminate power to the load. The foregoing alternative versions may advantageously be combined.

US Patent:

20040174696, Sep 9, 2004

Filed:

Mar 4, 2004

Appl. No.:

10/793059

Inventors:

Roger Buelow - Gates Mills OH, US
John Davenport - Middleburg Heights OH, US
Gregory Frankiewicz - University Heights OH, US

International Classification:

F21V009/16

US Classification:

362/084000, 362/293000, 362/583000

Abstract:

A light collection system comprises a light source with a bulbous section for emitting radiant energy in the direction of first and second portions of the bulbous section. A reflecting surface directs visible light from the light source to the first portion. Another reflecting surface directs UV energy from the light source to the second portion. A first angle-to-area converter receives visible light in the first portion and decreases the angle of the visible light to a desired angle. A second angle-to-area converter receives UV energy in the second portion and decreases the angle of the UV energy to a desired angle. A phosphor layer receives UV energy downstream of the second angle-to-area converter and converts the UV energy to visible light. A third angle-to-area converter receives visible light from the phosphor and reducing the angle of such light to an angle optimized for entering a fiber optic cable.

US Patent:

20040174709, Sep 9, 2004

Filed:

Mar 5, 2004

Appl. No.:

10/794623

Inventors:

Roger Buelow - Gates Mills OH, US
John Davenport - Middleburg Heights OH, US
Gregory Frankiewicz - University Heights OH, US
Wayne Hellman - Aurora OH, US
Juris Sulcs - Chagrin Falls OH, US
Raymond Buchina - Mentor OH, US

International Classification:

G01J001/20

US Classification:

362/296000

Abstract:

An illumination system for a video-imaging device has a light source and a collector of light from the light source. The collector is formed according to the principles of non-imaging optics and receives a portion of the light from the light source. The collector is configured to reduce the angular distribution of the collected light from the light source to match the requirements of a digital pixelation device. This system is highly efficient and compact compared to systems based on imaging optics, and can eliminate some of the components required for systems based on imaging optics. More extensive illumination systems are also disclosed.

US Patent:

20040179349, Sep 16, 2004

Filed:

Mar 5, 2004

Appl. No.:

10/794624

Inventors:

Roger Buelow - Gates Mills OH, US
John Davenport - Middleburg Heights OH, US
Gregory Frankiewicz - University Heights OH, US
Dave Bina - Northfield Center OH, US

International Classification:

G02B006/26

US Classification:

362/031000, 362/030000, 362/026000, 362/551000, 362/554000, 362/302000, 362/298000

Abstract:

A fiberoptic lighting system has a light source with a bulbous section and a plurality of plastic light pipes having substantially circular cross sections. A collector has an inlet for receiving light from the light source and an outlet. The collector performs an area-to-angle conversion on light it collects from the light source. A plurality of rods receives light from the collector and passes such light to the plastic light pipes, while thermally isolating the plastic light pipes from the light source. A perimeter of an outlet of the collector has a plurality of shaped portions, each associated with, and each substantially shaped the same as, a substantial portion of an associated perimeter of a respective one of the plurality of rods. The foregoing system delivers a higher percentage of light from a light source into multiple light pipes than in a prior art system.

US Patent:

20040179776, Sep 16, 2004

Filed:

Mar 10, 2004

Appl. No.:

10/797383

Inventors:

Chris Jenson - Twinsburg OH, US
John Davenport - Middleburg Heights OH, US
Roger Buelow - Gates Mills OH, US
Brian Doucet - Akron OH, US

International Classification:

G02B006/26

US Classification:

385/031000, 385/141000, 385/901000

Abstract:

A light pipe with side-light extraction by light pipe-surface alteration includes an optical light pipe with a plastic light-carrying portion covered with a fluoropolymer cladding. A plurality of light-extraction devices is spaced along an active section of the light pipe for emission of side light over only a range from about 2 to 270 degrees of the cross-sectional circumference of the light pipe in the active section. The light-extraction devices have inlets passing through the cladding and optically contacting the plastic light-carrying portion. Another form of light pipe with side-light extraction by light pipe-surface alteration includes an optical light pipe with a plastic light-carrying portion. An active section of the light pipe for side light emission comprises an axisymmetrical change of area of cross section of the light pipe that generally diminishes from an inlet end of the active section, through the active section.

US Patent:

20040179777, Sep 16, 2004

Filed:

Mar 10, 2004

Appl. No.:

10/797761

Inventors:

Roger Buelow - Gates Mills OH, US
Chris Jenson - Twinsburg OH, US
John Davenport - Middleburg Heights OH, US

International Classification:

G02B006/26

US Classification:

385/031000

Abstract:

A light pipe with uniform side-light emission has a core comprising a polymer, and a fluoropolymer cladding on the core with a lower refractive index than the core. Light-scattering material is distributed within the core along an active section of light pipe in which side-light emission is desired, with a density gradient chosen to achieve uniform side-light emission. Another light pipe with uniform side-light emission has a core comprising a polymer, and a fluoropolymer cladding on the core with a lower refractive index than the core. Light-scattering material is distributed within at least one of the cladding and the core along an active section of light pipe in which side-light emission is desired, with a density gradient chosen to yield uniform side light emission, and substantially only in a radial swath, along the longitudinal axis of the light pipe, of substantially less than 360 degrees.

US Patent:

20040196666, Oct 7, 2004

Filed:

Mar 4, 2004

Appl. No.:

10/793049

Inventors:

Dave Bina - Northfield Center OH, US
John Davenport - Middleburg Hights OH, US
Roger Buelow - Gates Mills OH, US
Gregory Frankiewicz - University Heights OH, US

International Classification:

F21V033/00

US Classification:

362/581000

Abstract:

A light pipe fixture with adjustable beam spreads comprises a bayonet assembly having a generally tubular coupling for receiving a light-dispensing end of a light pipe, and a receiver assembly. The receiver assembly has a generally tubular coupling for receiving therewithin the bayonet assembly coupling at adjustable levels of penetration of the bayonet assembly coupling within the receiver assembly coupling. The receiver assembly further comprises an optical lens and a hollow portion for focusing a light beam from the end of the light pipe through the lens. The radial interior surface of the receiver assembly coupling and the radial exterior surface of the bayonet assembly coupling may be configured so the receiver assembly coupling slidably and lockingly receives the bayonet assembly coupling in any of a plurality of positions along the length of the receiver assembly coupling.