Lighting devices and methods for providing daylight to the interior of a structure are disclosed. Some embodiments disclosed herein provide a daylighting device including a tube having a sidewall with a reflective interior surface, a light collecting assembly, and a light reflector positioned to ref
Lighting devices and methods for providing daylight to the interior of a structure are disclosed. Some embodiments disclosed herein provide a daylighting device including a tube having a sidewall with a reflective interior surface, a light collecting assembly, and a light reflector positioned to reflect daylight into the light collector. In some embodiments, the light collector is associated with one or more light-turning and/or light reflecting structures configured to increase the amount of light captured by the daylighting device. Optical elements may allow for the absorption and/or selective transmission of infrared light away from an interior of the daylighting device.
대표청구항▼
1. An at least partially transparent light-collecting device configured to be installed on a roof of a building for illumination of an interior of the building with natural visible light, the device comprising: a top cover portion configured to receive daylight from outside of the building;an at lea
1. An at least partially transparent light-collecting device configured to be installed on a roof of a building for illumination of an interior of the building with natural visible light, the device comprising: a top cover portion configured to receive daylight from outside of the building;an at least partially transparent substantially vertical sidewall portion configured to support the top cover portion above an upper end of the substantially vertical sidewall portion and to define a collector base aperture at a lower end of the substantially vertical sidewall portion, wherein the substantially vertical portion has a height that extends between the top cover portion and the collector base aperture, and wherein the substantially vertical portion is configured to receive daylight from outside of the building, the daylight comprising a visible light portion and an infrared light portion;an optical element associated with the substantially vertical sidewall portion, the optical element configured to turn a substantial portion of the visible light portion of the daylight received through the at least partially transparent substantially vertical sidewall portion towards the collector base aperture and to transmit the infrared light portion of the daylight received through the at least partially transparent substantially vertical sidewall portion through the optical element; andan infrared control element connected to the vertical sidewall portion of the light-collecting device and disposed at least partially above the collector base aperture, the infrared control element configured to receive at least a portion of the infrared light portion of the daylight transmitted through the optical element, wherein the infrared control element is configured to direct a substantial portion of the received infrared light portion of the daylight away from the collector base aperture to outside of the building;wherein the collector base aperture of the light-collecting device is configured to be positioned over an opening in the roof of the building and is configured to direct daylight into the opening in the roof. 2. The device of claim 1, wherein the infrared control element is configured to absorb the received infrared light portion of the daylight and reradiate the received infrared light portion of the daylight away from an interior of the light-collecting device. 3. The device of claim 2, wherein the infrared control element comprises a material having high emissivity characteristics. 4. The device of claim 3, wherein the infrared control element comprises a material having an emissivity value greater than or equal to about 0.90 and less than or equal to 1.0. 5. The device of claim 1, wherein the sidewall portion is configured to substantially transmit the infrared light directed away from the collector base aperture. 6. The device of claim 1, wherein the infrared control element is at least partially secured to the sidewall portion by an adhesive configured to absorb infrared light incident on a surface of the infrared control element. 7. The device of claim 1, wherein the infrared control element comprises a material painted on a surface of the sidewall configured to absorb infrared light incident on a surface of the infrared control element. 8. The device of claim 1, wherein the top cover portion is substantially flat. 9. The device of claim 1, wherein the top cover portion comprises a dome-shaped surface. 10. The device of claim 1, wherein the vertical portion comprises a plurality of vertically-arranged segments, including an upper segment and a lower segment. 11. The device of claim 10, wherein the upper and lower segments are each approximately 5 to 30 inches in height. 12. The device of claim 10, wherein the upper and lower segments are each of uniform height. 13. The device of claim 1, wherein the infrared control element comprises an optical element that has a luminous reflectance greater than or equal to about 0.95 and less than or equal to 1.0 with respect to CIE Illuminant D65 and transmits a substantial portion of infrared light. 14. The device of claim 1, wherein the vertical portion is curved. 15. The device of claim 14, wherein the infrared control element is curved and nestingly disposed along an interior surface of the vertical portion. 16. The device of claim 14, wherein the vertical portion comprises a first semi-circle portion that is substantially luminously transparent, and a second semi-circle portion that is substantially luminously reflective. 17. The device of claim 16, wherein the second semi-circle portion is configured to absorb a substantial portion of infrared light incident on a surface of the second semi-circle portion. 18. The device of claim 16, wherein the second semi-circle portion comprises a surface in substantial thermal communication with a high-emissivity material configured to facilitate radiation of thermal energy away from the device. 19. The device of claim 18, wherein the high-emissivity material has an emissivity value greater than or equal to about 0.9 and less than or equal to 1.0, and wherein the high-emissivity material comprises anodized metal, a coating, paint, or a combination of high-emissivity materials. 20. The device of claim 1, wherein the optical element comprises a prismatic element. 21. A method of illuminating an interior of a building using a daylighting system including a light-collecting device mounted on a roof of the building, the method comprising: receiving daylight from outside of the building on a top cover portion and an at least partially transparent substantially vertical surface of the light-collecting device, wherein the at least partially transparent substantially vertical surface is configured to support the top cover portion above an upper end of the substantially vertical surface, wherein the at least partially transparent substantially vertical surface is configured to define a collector base aperture at a lower end of the substantially vertical surface, and wherein the substantially vertical portion has a height that extends between the top cover portion and the collector base aperture, the daylight comprising a visible light portion and an infrared light portion;turning a substantial portion of the visible light portion of the daylight towards the collector base aperture disposed over an opening in the roof of the building using an optical element disposed within the light collecting device and at least partially coupled to the substantially vertical surface;transmitting the infrared light portion of the daylight through the optical element;reflecting a substantial portion of the turned visible light towards the collector base aperture disposed over the opening in roof of the building using a reflector connected to the light-collecting device and disposed at least partially above the collector based aperture; andabsorbing or transmitting a substantial portion of the infrared light of the daylight transmitted through the optical element away from the opening in the roof of the building to the outside of the building using the reflector. 22. The method of claim 21, further comprising reradiating the infrared light away from the opening in the building. 23. The method of claim 22, wherein reradiating comprises radiating the infrared light using a high emissivity material disposed on an outside surface of the light-collecting device. 24. The method of claim 21, wherein the optical element comprises a prismatic element. 25. A method of manufacturing an at least partially transparent light-collecting device for directing natural visible light into a building interior through a daylighting opening, the method comprising: providing a top cover portion configured to receive daylight from outside of the building;providing an at least partially transparent substantially vertical surface configured to support the top cover portion above an upper end of the substantially vertical surface and to define a collector base aperture at a lower end of the substantially vertical surface, wherein the substantially vertical surface has a height that extends between the top cover portion and the collector base aperture, and wherein the substantially vertical surface is configured to receive daylight from outside of the building, the daylight comprising a visible light portion and an infrared light portion;providing an optical element associated with the substantially vertical surface, the optical element configured to turn a substantial portion of the visible light portion of the daylight received through the at least partially transparent substantially vertical surface towards the collector base aperture and transmit the infrared light portion of the daylight received through the at least partially transparent substantially vertical sidewall portion through the optical element; andconnecting an infrared control element to the substantially vertical surface and positioning the infrared control element such that the infrared control element directs a substantial portion of the infrared light away from the collector base aperture to outside of the building. 26. The method of claim 25, wherein the optical element comprises a prismatic element. 27. An at least partially transparent light-collecting device configured to direct natural visible light through a collector base aperture and into an interior of a building, the device comprising: a top cover portion configured to receive daylight from outside of the building;an at least partially transparent substantially vertical sidewall portion configured to support the top cover portion above an upper end of the substantially vertical sidewall portion and to define a collector base aperture at a lower end of the substantially vertical sidewall portion, wherein the substantially vertical portion has a height that extends between the top cover portion and the collector base aperture, and wherein the substantially vertical portion is configured to receive a substantial amount of daylight from outside of the building during midday hours, wherein the daylight comprises a visible light portion and an infrared light portion;an optical element disposed within the light-collecting device and associated with the at least partially transparent substantially vertical sidewall portion, the optical element configured to turn a substantial portion of the visible light portion of the daylight received through the at least partially transparent substantially vertical sidewall portion towards the collector base aperture and transmit the infrared light portion of the daylight received through the at least partially transparent substantially vertical sidewall portion through the optical element; anda reflector associated with the at least partially transparent substantially vertical sidewall portion disposed at least partially above the collector base aperture, the reflector configured to reflect a substantial portion of the visible light towards the collector base aperture and configured to absorb or transmit a substantial portion of the infrared light to outside of the building;wherein the collector base aperture of the light-collecting device is configured to be positioned over an opening in a roof of a building and is configured to direct the visible light into the opening in the roof. 28. The device of claim 27, wherein the reflector is configured to absorb the infrared light and radiate the infrared light away from the collector base aperture. 29. The device of claim 28, wherein the reflector comprises a material having high emissivity characteristics. 30. The device of claim 29, wherein the reflector comprises a material having an emissivity value of greater than or equal to about 0.90 and less than or equal to 1.0. 31. The device of claim 27, wherein the reflector is at least partially secured to the sidewall portion by an adhesive configured to absorb infrared light incident on a surface of the reflector. 32. The device of claim 27, wherein the reflector is at least partially transparent with respect to infrared light. 33. The device of claim 27, wherein the vertical portion is substantially cylindrically shaped. 34. A daylighting system comprising an internally reflective tube configured to direct light between the light-collecting device of claim 27 and a diffuser. 35. The device of claim 27, wherein the optical element comprises a prismatic element. 36. A method of illuminating an interior of a building, the method comprising: receiving daylight on a top cover portion and an at least partially transparent substantially vertical surface from an exterior of the building, wherein the at least partially transparent substantially vertical surface is configured to support the top cover portion above an upper end of the substantially vertical surface and to define a collector base aperture at a lower end of the substantially vertical surface, wherein the substantially vertical surface has a height that extends between the top cover portion and the collector base aperture, and wherein the daylight comprises a visible light portion and an infrared light portion;turning a substantial portion of the visible light portion of the daylight towards the collector base aperture disposed over an opening in a roof of the building using an optical element associated with the substantially vertical surface and transmitting the infrared light portion of the daylight through the optical element;andtransmitting or radiating a portion of infrared light of the daylight away from the collector base aperture to the exterior of the building using an infrared control element connected to the substantially vertical surface. 37. The method of claim 36, wherein the optical element comprises a prismatic element.
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