Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Saint-augustin Canada Electric Inc.

Flabeg Solarglas Gmbh & Co. Kg

Other

Merck Patent Gmbh

Concentrix Solar Gmbh

Andreas Gombert

Walther Glaubitt

Monika Kursawe

Sascha Van Riesen

Thomas Hofmann

Wolfgang Graf

Martin Neubauer

Andreas Georg

Harry Wirth

Volker Wittwer

Franz Brucker

Benedikt Bläsi

Michael Koehl

Walter D&ouml;ll

J&ouml;rg Jungjohann

Volker Willwer

Hans-Joachim Becker

Ludwig Thomas

Hansjorg Lerchenmuller

Jakob Stor

Cecile Taliercio

Armin Dauwalter

Volkmar Boerner

Laszlo K&ouml;ncz&ouml;l

Sacha Van Riesen

Cécile Taliercio

Jakob STÖR

The present invention relates to a Fresnel lens and a respective mold, the lens comprising a plurality of draft facets, wherein the draft angle of the draft facets has at least two different angular values for two different draft facets, in particular, wherein the draft angle is bigger for a draft facet closer to the edge of the lens or, respectively, of the mold, than for a draft facet closer to the center of the lens or, respectively, of the mold.

Concentrator fresnel lens with varying draft angle

A voltage matched multijunction solar cell having first and second solar cell stacks that are electrically connected parallel to each other. The first solar cell stack is optimized for absorption of incoming solar light in a first wavelength range and the second solar cell stack is optimized for absorption of incoming solar light in a second wavelength range, wherein the first and the second wavelength range do not or at most only partially overlap each other.

Voltage matched multijunction solar cell

A device to regulate the relative humidity level inside a CPV module, the device comprising a desiccant unit connected to the module via a duct, the module is also connectable to ambient atmosphere and the device comprises a switching mechanism that is actuated by a regulation unit, allowing a gas flow between the module and either the desiccant unit or ambient atmosphere. The air into the CPV module is let through a dehumidifier only when there is risk of condensation, which is determined from values of the air inside and/or outside the module by sensors sensing temperature and/or relative humidity and comparing these to thresholds or to the calculated dew temperature inside the module.

Device to regulate the relative humidity level in a CPV module

A method for manufacturing solar cell chips having an active surface area configured to directly convert solar energy into electrical energy. The method including cutting the solar cell chips out of a wafer using a laser such that the solar cell chips include a non-rectangular geometry. The non-rectangular geometry facilitate continuous cutting by the laser and maximizing a number of solar cell chips cut from the wafer.

Solar cell chips with new geometry and method for manufacturing the same

The present invention relates to a coating material containing (a) first oxidic particles formed by hydrolytic condensation, in a size range of 5-20 nm, (b) second particles with a diameter in the size range of 80-300 nm, (c) a first aqueous solvent in which the source material for the oxidic particles formed by hydrolytic condensation can be dissolved and which allows or promotes the hydrolysis and condensation thereof, and (d) at least one second solvent, selected among specifically defined alcohols, ethers, organic acids, esters, ketones, amines and amic acids and mixtures thereof. The invention relates in addition to a substrate supplied with a coating, particularly a glass suitable for the photovoltaic and warm water collector domain, wherein the coating is composed of at least two particle fractions, wherein the particles of the first fraction have a diameter in the size range of 5-20 nm, and the particles of the second fraction have a diameter in the size range of 80-300 nm, wherein the particles of the second fraction have an average distance from each other, measured from cone to cone of these particles, of on average 20-200 nm, and wherein the particles of the first particle fraction have pores with a pore radius distribution of which the maximum is between 1 and 6 nm. The coating of the substrate can be achieved by means of the named coating material.

Substrates supplied with a dust and aerosol-repellent coating, method for the production thereof and materials for this purpose

A coated glass product includes a glass substrate and a porous antireflection surface coating including SiO-based particles having a first particle fraction including a first characteristic particle size range and a second particle fraction having a second characteristic particle size range that is different from the first characteristic particle size range. In addition, a method for producing the coated glass product is provided.

Glass having a porous anti-reflection surface coating and method for producing such glass

Hybrid sol comprising [SiO(OH)]particles, where 0&#x3c;y&#x3c;4 and 0&#x3c;x&#x3c;2, which consist of a mixture of a first fraction of particles having a particle size of 4&#x2013;15 nm and a second fraction of particles having a mean particle size of 15&#x2013;60 nm, water and a solvent; obtainable by hydrolytic polycondensation of tetraalkoxysilanes in an aqueous, solvent-containing medium with addition of a monodisperse silicon oxide hydroxide sol having a mean particle size of 15&#x2013;60 nm and a maximum standard deviation of 20%, and the preparation and use thereof.

[object Object]

The invention relates to thermally tempered safety glass comprising an non-abrasive and porous SiOlayer which is stable during sintering and has a refractive index of between 1.25 and 1.40. The inventive safety glass can be obtained by coating standard soda-lime glass with an aqueous coating solution having a pH value of between 3 and 8 and containing between 0.5 and 5.0 wt. % of [SiO(OH)]particles (0&#x3c;y&#x3c;4 and 0&#x3c;x&#x3c;2) having a particle size of between 10 and 60 nm, and a surfactant mixture. The coated glass is then dried, thermally hardened at temperatures of at least 600&#xb0; C. for several minutes, and thermally tempered by a flow of air.

The present invention relates to a method for producing light-scattering elements by holographic illumination of a layer () of a photo-sensitive material on a support plate () and subsequent development of the layer () in order to generating a surface structure. The method is distinguished in that the illumination occurs using at least two mutually coherent luminous beams () which have passed through one or a plurality of primary diffusers () respectively were reflected at one or a plurality of primary diffusers, the luminous beams () being irradiated from different directions and being at least partially superimposed on the layer () while forming an interference pattern. This method permits producing diffusers having a leveled scatter profile in a simple manner.

Method for producing light scattering elements

Element for lighting rooms by selective daylight guidance and method of manufacturing such an element

Antireflective coating and method of manufacturing same

A Venetian type sunshade comprising a plurality of parallel lamellae with horizontally extending respective longitudinal axes, which are adapted to be rotated about their respective longitudinal axes using an adjusting mechanism. The lamellae, or a layer applied on the upper side of the lamellae, consists of a material transparent to sunlight. Each lamella has an upper side, a plurality of ribs, and a third face. Each rib has a first face arranged obliquely relative to the upper side of the lamella and adapted to be irradiated by the sun in an approximately vertical direction, and a second face which is arranged flush and at an acute angle of roughly 45&deg; relative to the first flat element. The third face is approximately orthogonal to the second faces. Adjacent ribs define a mutual spacing which permits a low shade irradiation and emission through the first faces when there is approximately perpendicular irradiation of the first flat elements, with the optical connection between the mutual spacing being within the thickness between the upper side of a lamella and the third face.

Sunshade of the type of a venetian blind

A method of and a solution for making a highly porous optical antireflection coating of a selectively designed index of refraction, by applying a colloidal dispersion derived from hydrolytically condensing, in the presence of water and a catalyst, one or more silicon compounds of the general formula R,SiX,, or precondensates derived therefrom, to a substrate. In the formula, R is an organic group having from 1 to 10 carbon atoms which may be interrupted by oxygen atoms and/or sulfur atoms and/or amino groups, X is hydrogen, halogen, hydroxy, alkoxy, acyloxy, alkylcarbonyl, alkoxycarbonyl or NR&prime;,, R&prime; being hydrogen, alkyl or aryl and a being 0, 1 or 2. The solution also contains colloidally dispersed organic polymers at a molar ratio, relative to the silane, between 0.1 mmol/mol silane and 100 mmol/mol silane, the median molecular mass of the polymer being between 200 and 500,000. Sol-vents, preferably alcohol, may also be present in the solution. After being applied to an optical substrate, the solution is dried and organic components are removed from it to leave a porous coating of predetermined index of refraction.

Method of making an anti-reflection coating

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Freiburg, Germany

Andreas Gombert