Abstract: An optical observation instrument according to the invention, in particular a surgical microscope or exoscope, comprises an optics unit with an objective arrangement and at least one electronic image recorder, wherein the optics unit has a first stereo channel with a first beam path and a second stereo channel with a second beam path for recording a stereo image of an object field with the at least one electronic image recorder and wherein the first and the second beam path extend through the objective arrangement.

Abstract: An optical observation instrument according to the invention, in particular a surgical microscope or exoscope, comprises an optics unit with an objective arrangement and at least one electronic image recorder, wherein the optics unit has a first stereo channel with a first beam path and a second stereo channel with a second beam path for recording a stereo image of an object field with the at least one electronic image recorder and wherein the first and the second beam path extend through the objective arrangement. Further, the observation instrument comprises a retaining apparatus which comprises a retaining bracket, which engages over the optics unit, wherein the retaining bracket comprises an operating device with a number of operating elements for controlling a retaining arm, to which the retaining apparatus is connectable.

Abstract: A process for the preparation of colored solar cells or colored solar cell modules containing a colored polymer film with oriented effect pigments, and colored solar cells or colored solar cell modules prepared by this process.

Abstract: A process for the preparation of colored solar cells or colored solar cell modules containing a colored polymer film with oriented effect pigments, and colored solar cells or colored solar cell modules prepared by this process.

Abstract: An optical observation instrument according to the invention, in particular a surgical microscope or exoscope, comprises an optics unit with an objective arrangement and at least one electronic image recorder, wherein the optics unit has a first stereo channel with a first beam path and a second stereo channel with a second beam path for recording a stereo image of an object field with the at least one electronic image recorder and wherein the first and the second beam path extend through the objective arrangement. Further, the observation instrument comprises a retaining apparatus which comprises a retaining bracket, which engages over the optics unit, wherein the retaining bracket comprises an operating device with a number of operating elements for controlling a retaining arm, to which the retaining apparatus is connectable.

Abstract: An optical observation instrument according to the invention, in particular a surgical microscope or exoscope, comprises an optics unit with an objective arrangement and at least one electronic image recorder, wherein the optics unit has a first stereo channel with a first beam path and a second stereo channel with a second beam path for recording a stereo image of an object field with the at least one electronic image recorder and wherein the first and the second beam path extend through the objective arrangement.

Abstract: The invention relates to solar cells or solar cell modules comprising a layer on or in the front radiation-receiving side of the solar cell comprising effect pigments consisting of a transparent or semi-transparent flake-form substrate coated with one or more layers of transparent or semi-transparent materials and optionally with a post coating, and a process for their preparation.

Abstract: The present invention relates to a novel process for the preparation of printable, high-viscosity oxide media, and to the use thereof in the production of solar cells.

Abstract: The present invention relates to a novel printable boron doping paste in the form of a hybrid gel based on precursors of inorganic oxides, preferably of silicon dioxide, aluminium oxide and boron oxide, in the presence of organic polymer particles, where the pastes according to the invention can be used in a simplified process for the production of solar cells, where the hybrid gel according to the invention functions both as doping medium and as diffusion barrier.

Abstract: The present invention relates to a novel printable paste in the form of a hybrid gel based on precursors of inorganic oxides which can be used in a simplified process for the production of solar cells, where the hybrid gel according to the invention functions both as doping medium and also as diffusion barrier.

Abstract: The present invention relates to a novel printable medium in the form of a hybrid sol and/or gel based on precursors of inorganic oxides for use in a simplified process for the production of solar cells, in which the medium according to the invention functions both as doping medium and also as diffusion barrier.

Abstract: The present invention relates to a process for the production of structured, highly efficient solar cells and of photovoltaic elements which have regions of different doping. The invention likewise relates to the solar cells having increased efficiency produced in this way.

Abstract: The present invention relates to a process for the production of structured, highly efficient solar cells and of photovoltaic elements which have regions of different doping. The invention likewise relates to the solar cells having increased efficiency produced in this way.

Abstract: The present invention relates to aluminium oxide pastes and to a process for the use of the aluminium oxide pastes for the formation of Al2O3 coatings or mixed Al2O3 hybrid layers.

Abstract: The present invention relates to a novel process for the preparation of printable, low-viscosity oxide media, and to the use thereof in the production of solar cells.

Abstract: The present invention relates to a novel process for the preparation of printable, low- to high-viscosity oxide media, and to the use thereof in the production of solar cells.

Abstract: The present invention relates to a novel process for the preparation of print-able, high-viscosity oxide media, and to the use thereof in the production of solar cells.

Abstract: The present invention relates to a novel process for the preparation of printable, high-viscosity oxide media, and to the use thereof in the production of solar cells.

Abstract: The present invention relates to aluminium oxide pastes and to a process for the use of the aluminium oxide pastes for the formation of Al2O3 coatings or mixed Al2O3 hybrid layers.

Abstract: The present invention relates to aluminium oxide-based passivation layers which simultaneously act as diffusion barrier for underlying wafer layers against aluminium and other metals. Furthermore, a process and suitable compositions for the production of these layers are described.