Patent application number | Description | Published |
20130118559 | BUSSES FOR BIFACIAL PHOTOVOLTAIC CELLS - PV module composed of individual PV cells oriented and electrically connected according to a methodology that is viable for at least i) bifacial cells with substantially equal solar-energy conversion efficiency achievable on each side of each cell, and ii) PV modules with low operating current. Embodiments of the invention facilitate the use of different busing technologies to reduce cost and complexity of the resulting PV module while increasing the electrical energy harvested by the PV module. | 05-16-2013 |
20130120815 | VOLUME HOLOGRAM REPLICATOR FOR TRANSMISSION TYPE GRATINGS - A holographic replicator configured to mass-manufacture volumetric transmission holograms and including an imaging tank having a holographic master plate opposing a pneumatic absorber. When a segment of a recording film, moveable with respect to the master plate, is placed between the master plate and the pneumatic absorber, the pneumatic absorber is repositioned in space to locks the segment of the recording film between the master plate and the pneumatic absorber. | 05-16-2013 |
20130128326 | LIGHT ABSORBING FILM FOR HOLOGRAPHIC PROCESSING AND METHOD OF USING SAME - A novel light absorbing holographic film for holographic processing is present. The holographic film includes a light absorbing film having a holographic medium disposed thereon. The light absorbing film comprises a substrate and a light absorption layer disposed on a first surface of the substrate. In certain embodiments a second light absorption layer is disposed on a second, opposing surface of the substrate. In other embodiments, a second absorption layer is disposed on top of the first absorption layer. | 05-23-2013 |
20130160826 | FRAMELESS PHOTOVOLTAIC MODULE - A photovoltaic module employing an array of photovoltaic cells disposed between two optically transparent substrates such as to define a closed-loop peripheral area of the module that does not contain a photovoltaic cell. The module is sealed with a peripheral seal along the perimeter; and is devoid of a structural element affixed to an optically transparent substrate and adapted to mount the module to a supporting structure. The two substrates may be bonded together with the use of adhesive material and, optionally, the peripheral seal can include the adhesive material. The module optionally includes diffraction grating element(s) adjoining respectively corresponding PV-cell(s). | 06-27-2013 |
20130160850 | BLAZED GRATING FOR SOLAR ENERGY CONCENTRATION - A solar concentrator having a photovoltaic cell in optical contact with a cover. A blazed grating is provided adjacent to and co-planar with the photovoltaic cell for preferentially diffracting light that does not directly intercept the photovoltaic cell toward the photovoltaic cell via total internal reflection in the cover. | 06-27-2013 |
20130167903 | ENCAPSULATED SOLAR ENERGY CONCENTRATOR - A holographic planar concentrator of solar energy employing an array of holographically-recorded diffraction grating elements adjoining the corresponding bifacial or monofacial PV-cell. Diffracting grating elements are configured to operate in transmission and/or reflection. The array is sandwiched and, optionally, encapsulated between the two layers of structurally supporting material that are impermeable to ambient moisture. The grating elements can be blazed and the material layer in which the gratings are recorded is protected from the moisture in the ambient environment by a moisture impermeable encapsulant. | 07-04-2013 |
20130276865 | SAW-TOOTH SHAPED SOLAR MODULE - A photovoltaic module, configured for inclined (with respect to the horizontal surface) installation at a chosen latitude as part of rows of such photovoltaic modules, is complemented with a diffractive element that is configured to form a combination in which a gap between neighboring rows is bridged by the diffractive element to diffract sunlight incident onto so installed diffractive element towards the photovoltaic module. The photovoltaic module and the diffractive elements can be connected to one another in a turnable fashion, for example through hinge, to enable electrical power generation that is substantially time-invariable throughout a portion of a year. Photovoltaic module optionally includes internal holographically-defined diffraction gratings and/or bifacial photovoltaic cells. | 10-24-2013 |
20130312811 | NON-LATITUDE AND VERTICALLY MOUNTED SOLAR ENERGY CONCENTRATORS - A solar-energy concentrator optimized for operating in a substantially vertical orientation and method for collecting sunlight with such concentrator. The concentrator includes a photovoltaic (PV) module having a PV cell and layers containing diffraction gratings that may be spatially stacked or multiplexed. Diffraction gratings define corresponding diffraction patterns optimized for solar energy harvesting depending on which direction the concentrator is facing. Additionally, a method of designing a hologram for concentrating solar energy onto an adjacent photovoltaic chip is provided. The method includes selecting a photovoltaic chip material, selecting a photovoltaic cell geometry, selecting a first construction angle, selecting an installation latitude, selecting an installation tilt angle, and modeling hologram performance as a function of a second construction angle and a design wavelength. | 11-28-2013 |
20130319524 | SOLAR ENERGY CONCENTRATOR WITH MULTIPLEXED DIFFRACTION GRATINGS - A solar-energy concentrator and method for collecting sunlight with the concentrator. The concentrator includes a photovoltaic (PV) module having a PV cell and layers containing holographically-defined diffraction gratings that are spatially stacked or multiplexed. Spatial stacking or multiplexing of the gratings is configured to ensure that one grating layer carries another grating layer and that a portion of incident light not diffracted on one grating interacts with and is diffracted by another grating. Light that has interacted with either of the spatially multiplexed gratings is further redirected towards a sunlight collecting surface of the PV cell with the use of TIR reflection at a dielectric boundary of the concentrator. | 12-05-2013 |
20140130842 | BUSSING FOR PV-MODULE WITH UNEQUAL-EFFICIENCY BI-FACIAL PV-CELLS - A PV module includes strings of serially electrically connected individual bifacial photovoltaic cells each of which is characterized by conversion efficiencies that are different for front and back sides of each cell. The module includes at least two of such strings which are electrically parallel to one another such that front sides of cells in one string and back sides of the cells in another string corresponding to the same side of the module. Each side of the module is thereby adapted to generate substantially the same amount of electrical power under otherwise equal circumstances. On a sunny day, the module generates as much electrical power before noon as after noon if the front side and the back side receive, aggregately, substantially the same amount of solar power incident thereon during the day. | 05-15-2014 |