Patents by Inventor Harold W. Brunt, Jr.
Harold W. Brunt, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10675823Abstract: A method of forming a compound lens includes molding multiple lens elements to form a compound lens. The multiple lens elements are molded from polymers that provide each lens element with the desired optical properties. First and second lens elements formed from a first polymer can be molded around a central, third element formed from a second polymer that differs from the first polymer by the addition of a cyclic substituent group. During curing of the lens elements, cross-links are formed between the first and second polymers to form an molded, integrally formed compound lens.Type: GrantFiled: September 11, 2017Date of Patent: June 9, 2020Assignee: LumenFlowInventor: Harold W. Brunt, Jr.
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Patent number: 10620348Abstract: An optical system providing improved control over light reflectivity is provided. The optical system includes an index-gap wedge prism to collect light escaping through the internal reflective surface of an optical element for recombination with light reflected by the internal reflective surface of the optical element. The index-gap wedge prism collects and redirects the escaped light back into the primary reflected path of the optical element to provide an aligned and correlated light across a range of applications, including applications where optical coatings on key surfaces may not be feasible.Type: GrantFiled: November 3, 2017Date of Patent: April 14, 2020Assignee: LumenflowInventor: Harold W. Brunt, Jr.
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Patent number: 10466456Abstract: A tractrix-based optical device is provided. The tractrix-based optical device includes a light receiving surface, a light emitting surface, and an intermediate portion of transparent material between the light receiving surface and the light emitting surface. The intermediate portion includes a boundary connective surface that adheres to a tractrix when in cross-section to provide total internal reflection of light propagating from the light receiving surface to the light emitting surface. The tractrix-based optical device can align and correlate light from multiple off-axis light emitting elements, or from an extended source light emitting element, thereby providing a generally uniform output distribution.Type: GrantFiled: November 21, 2018Date of Patent: November 5, 2019Inventor: Harold W. Brunt, Jr.
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Patent number: 10336025Abstract: A compound lens and a related method of manufacture are provided. The compound lens includes a first lens element and a second lens element such that a light emitting surface of the first lens element is integrally joined to a light receiving surface of the second lens element, the first and second lens element being in optical alignment with each other. The first and second lens element are molded from optical grade silicone and can achieve complex illumination objectives not possible with single lens constructions. The method of manufacture includes injecting a silicone resin molding compound into a mold cavity having the desired shape of the compound lens. The method of manufacture can include over-molding a lens holding member onto the compound lens and adding electro-optically active particles to a surface of the compound lens or to the silicone resin forming the compound lens.Type: GrantFiled: April 13, 2016Date of Patent: July 2, 2019Assignees: Lumenflow Corp., Dow Silicones CorporationInventors: Harold W. Brunt, Jr., Michael R. Strong, Gilbert M. Pinter
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Publication number: 20190094506Abstract: A tractrix-based optical device is provided. The tractrix-based optical device includes a light receiving surface, a light emitting surface, and an intermediate portion of transparent material between the light receiving surface and the light emitting surface. The intermediate portion includes a boundary connective surface that adheres to a tractrix when in cross-section to provide total internal reflection of light propagating from the light receiving surface to the light emitting surface. The tractrix-based optical device can align and correlate light from multiple off-axis light emitting elements, or from an extended source light emitting element, thereby providing a generally uniform output distribution.Type: ApplicationFiled: November 21, 2018Publication date: March 28, 2019Inventor: Harold W. Brunt, JR.
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Publication number: 20190077103Abstract: A method of forming a compound lens includes molding multiple lens elements to form a compound lens. The multiple lens elements are molded from polymers that provide each lens element with the desired optical properties. First and second lens elements formed from a first polymer can be molded around a central, third element formed from a second polymer that differs from the first polymer by the addition of a cyclic substituent group. During curing of the lens elements, cross-links are formed between the first and second polymers to form an molded, integrally formed compound lens.Type: ApplicationFiled: September 11, 2017Publication date: March 14, 2019Inventor: Harold W. Brunt, JR.
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Publication number: 20190069770Abstract: An illuminated dental mirror includes an elongated body that has a handle portion and a tip portion. A light source is disposed within the elongated body and is operable to emit light longitudinally along the elongated body to a deflector disposed at an interior chamber of the tip portion. The deflector is configured to redirect light laterally out of the tip portion of the elongated body. A disposable mirror head is removably attached over the tip portion. The mirror head includes a base portion and a mirror portion. The base portion of the mirror head has a translucent material configured to transmit the light redirected by the deflector to a desired area outside the mirror head. The mirror portion that extends at an angle from the base portion and comprises a mirror that is configured for a user to view the desired area illuminated by the light source.Type: ApplicationFiled: September 5, 2017Publication date: March 7, 2019Inventors: Paul L. Bourget, Harold W. Brunt, Jr., Donald P. McConnell, Robert R. Phillips, Justin E. Sobecki, David J. Ippel, Brian S. Zatzke
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Patent number: 10208927Abstract: An optical emitter providing improved light uniformity. The optical emitter includes a light source and a lens element spaced apart from the light source such that no additional lens elements are positioned therebetween. The lens element includes an inner light-receiving surface within the Fresnel field of the light source. In some embodiments, the light source includes an LED array and the lens element includes a lens array. The optical emitter provides the ability to adjust focus or spot size while not degrading the uniformity of the light intensity.Type: GrantFiled: February 28, 2017Date of Patent: February 19, 2019Assignee: Lumenflow Corp.Inventor: Harold W. Brunt, Jr.
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Patent number: 10168516Abstract: A tractrix-based optical device is provided. The tractrix-based optical device includes a light receiving surface, a light emitting surface, and an intermediate portion of transparent material between the light receiving surface and the light emitting surface. The intermediate portion includes a boundary connective surface that adheres to a tractrix when in cross-section to provide total internal reflection of light propagating from the light receiving surface to the light emitting surface. The tractrix-based optical device can align and correlate light from multiple off-axis light emitting elements, or from an extended source light emitting element, thereby providing a generally uniform output distribution.Type: GrantFiled: July 28, 2016Date of Patent: January 1, 2019Assignee: Lumenflow Corp.Inventor: Harold W. Brunt, Jr.
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Publication number: 20180164477Abstract: An optical system providing improved control over light reflectivity is provided. The optical system includes an index-gap wedge prism to collect light escaping through the internal reflective surface of an optical element for recombination with light reflected by the internal reflective surface of the optical element. The index-gap wedge prism collects and redirects the escaped light back into the primary reflected path of the optical element to provide an aligned and correlated light across a range of applications, including applications where optical coatings on key surfaces may not be feasible.Type: ApplicationFiled: November 3, 2017Publication date: June 14, 2018Inventor: Harold W. Brunt, JR.
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Publication number: 20180031206Abstract: A tractrix-based optical device is provided. The tractrix-based optical device includes a light receiving surface, a light emitting surface, and an intermediate portion of transparent material between the light receiving surface and the light emitting surface. The intermediate portion includes a boundary connective surface that adheres to a tractrix when in cross-section to provide total internal reflection of light propagating from the light receiving surface to the light emitting surface. The tractrix-based optical device can align and correlate light from multiple off-axis light emitting elements, or from an extended source light emitting element, thereby providing a generally uniform output distribution.Type: ApplicationFiled: July 28, 2016Publication date: February 1, 2018Inventor: Harold W. Brunt, JR.
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Publication number: 20170254490Abstract: An optical emitter providing improved light uniformity. The optical emitter includes a light source and a lens element spaced apart from the light source such that no additional lens elements are positioned therebetween. The lens element includes an inner light-receiving surface within the Fresnel field of the light source. In some embodiments, the light source includes an LED array and the lens element includes a lens array. The optical emitter provides the ability to adjust focus or spot size while not degrading the uniformity of the light intensity.Type: ApplicationFiled: February 28, 2017Publication date: September 7, 2017Inventor: Harold W. Brunt, JR.
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Patent number: 9671085Abstract: A reflector for reflecting light emitted by an LED light source and a method of forming the same are provided. The reflector has a unitary silicone body having a first end and a second end opposite the first end. The unitary silicone body has an inner surface extending between the first and second ends. The inner surface defines a first aperture at the first end for receiving the LED light source. The inner surface defines a second aperture at the second end for permitting light emitted from the LED light source to escape the unitary silicone body. The inner surface has a maximum inner diameter between the first and second ends. The inner surface has an inner diameter at the second end that is less than the maximum inner diameter.Type: GrantFiled: February 19, 2015Date of Patent: June 6, 2017Assignee: DOW CORNING CORPORATIONInventors: Harold W. Brunt, Jr., Emil Radkov, Wei Rong, Jacob William Steinbrecher, Michael Raymond Strong
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Publication number: 20160305629Abstract: A compound lens and a related method of manufacture are provided. The compound lens includes a first lens element and a second lens element such that a light emitting surface of the first lens element is integrally joined to a light receiving surface of the second lens element, the first and second lens element being in optical alignment with each other. The first and second lens element are molded from optical grade silicone and can achieve complex illumination objectives not possible with single lens constructions. The method of manufacture includes injecting a silicone resin molding compound into a mold cavity having the desired shape of the compound lens. The method of manufacture can include over-molding a lens holding member onto the compound lens and adding electro-optically active particles to a surface of the compound lens or to the silicone resin forming the compound lens.Type: ApplicationFiled: April 13, 2016Publication date: October 20, 2016Inventors: Harold W. Brunt, JR., Michael R. Strong, Gilbert M. Pinter
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Publication number: 20150300598Abstract: A reflector for reflecting light emitted by an LED light source and a method of forming the same are provided. The reflector has a unitary silicone body having a first end and a second end opposite the first end. The unitary silicone body has an inner surface extending between the first and second ends. The inner surface defines a first aperture at the first end for receiving the LED light source. The inner surface defines a second aperture at the second end for permitting light emitted from the LED light source to escape the unitary silicone body. The inner surface has a maximum inner diameter between the first and second ends. The inner surface has an inner diameter at the second end that is less than the maximum inner diameter.Type: ApplicationFiled: February 19, 2015Publication date: October 22, 2015Inventors: Harold W. Brunt, JR., Emil Radkov, Wei Rong, Jacob William Steinbrecher, Michael Raymond Strong
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Publication number: 20140126224Abstract: An optical emitter enabling conversion of light from a light source. The optical emitter includes a first conic reflector defining an aperture for receiving the light source, a second conic reflector opposite the first conic reflector for collimating light emitted by the light source, and a volumetric light conversion element between at least a portion of the first reflector and at least a portion of the second reflector. The optical emitter can also include a convex mirror adjacent the vertex of the second conic reflector, and an elliptical element adjacent the first conic reflector. The light conversion element can include phosphor dispersed in a resin to convert light from a first wavelength to light of a second, longer, wavelength, wherein converted light is emitted from the light conversion element.Type: ApplicationFiled: January 7, 2014Publication date: May 8, 2014Applicant: LumenFlow Corp.Inventors: Harold W. Brunt, JR., Paul L. Bourget
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Patent number: 8646949Abstract: An optical emitter enabling conversion of light from a light source. The optical emitter includes a first conic reflector defining an aperture for receiving the light source, a second conic reflector opposite the first conic reflector for collimating light emitted by the light source, and a volumetric light conversion element between at least a portion of the first reflector and at least a portion of the second reflector. The optical emitter can also include a convex mirror adjacent the vertex of the second conic reflector, and an elliptical element adjacent the first conic reflector. The light conversion element can include phosphor dispersed in a resin to convert light from a first wavelength to light of a second, longer, wavelength, wherein converted light is emitted from the light conversion element.Type: GrantFiled: March 3, 2010Date of Patent: February 11, 2014Assignee: LumenFlow Corp.Inventors: Harold W. Brunt, Jr., Paul L. Bourget
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Publication number: 20110215707Abstract: An optical emitter enabling conversion of light from a light source. The optical emitter includes a first conic reflector defining an aperture for receiving the light source, a second conic reflector opposite the first conic reflector for collimating light emitted by the light source, and a volumetric light conversion element between at least a portion of the first reflector and at least a portion of the second reflector. The optical emitter can also include a convex mirror adjacent the vertex of the second conic reflector, and an elliptical element adjacent the first conic reflector. The light conversion element can include phosphor dispersed in a resin to convert light from a first wavelength to light of a second, longer, wavelength, wherein converted light is emitted from the light conversion element.Type: ApplicationFiled: March 3, 2010Publication date: September 8, 2011Applicant: LUMENFLOW CORP.Inventors: Harold W. Brunt, JR., Paul L. Bourget
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Patent number: D742267Type: GrantFiled: April 22, 2014Date of Patent: November 3, 2015Assignee: DOW CORNING CORPORATIONInventors: Michael Raymond Strong, Harold W. Brunt, Jr., Wei Rong, Jacob William Steinbrecher, Emil Radkov
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Patent number: D792636Type: GrantFiled: December 29, 2015Date of Patent: July 18, 2017Assignee: Lumenflow Corp.Inventors: Harold W. Brunt, Jr., Jeremy J. Brodersen