Abstract:
An illumination device for a microscope, having a light source and a fiber-optic cable device comprising an input end and an output end, light emitted from the light source entering the input end of the fiber-optic cable device and emerging at the output end of the fiber-optic cable device, the fiber-optic cable device comprising one or more optical fibers, the one or more optical fibers each being embodied with a fiber body through each of which at least two channels extend parallel to the respective center axes z of the optical fibers.
Abstract:
The invention concerns a (stereoscopic) surgical microscope having a system for reflecting in illumination in which the illumination beam path (5) is switched into the microscope's main beam path via a deflection element (1) whose diameter exceeds the spacing of the observation beam paths (3). Different illumination angles for the specimen (10) can be generated by means of a stop (8) that is shiftable radially about the axis (5a) of the illumination beam path (5).
Abstract:
The invention concerns an apparatus for reflecting at least one stereoscopic observation beam path out of a main observation beam path of a microscope, for example a surgical stereomicroscope, having a zoom (6) whose axis is arranged at an angle to the optical axis (4) of the main objective (2), and having a beam splitter (7) for reflecting out stereoscopic assistant's observation beam paths (9a, b). The beam splitter (7) is arranged between the main objective (2) and the zoom (6), and is continuously rotatable, together with the assistant's microscope (8), about the optical axis (4) of the main objective (2), and is thus optically usable in any rotational position.
Abstract:
An illumination apparatus, usable for example as a slit lamp, comprises a light-emitter (2) and an optical element (12) having a free-form surface (13), and optionally a slit aperture (9) and an imaging optic (10). The concept of the present invention is that the free-form surface (13) is employed to generate a resultant illumination beam having a slit-shaped cross-section.
Abstract:
Microscope, particularly a stereomicroscope, for simultaneous observation of an object by a first and a second observer, comprising a main objective (2) having an optical axis (2a); an optical viewing path; a plurality of deflector elements (5, 6, 7) for deflecting the optical viewing path into a first plane I extending at an angle to the optical axis of the main objective and subsequently into a second plane II substantially parallel to and above the first plane I; an uncoupling device (7) in the optical viewing path for uncoupling an optical viewing path of the second observer from an optical viewing path of the first observer; and a deflector element (20) for deflecting the optical viewing path of the second observer into a third plane III which extends substantially parallel to the first and second planes I, II, wherein the second plane II is located between the first plane I and the third plane III.
Abstract:
Microscope, especially stereoscopic microscope, with a main objective (2), a magnification system (8, 7) disposed thereafter, and a supplementary optical system (30, 32a) for carrying out intraocular surgery, wherein the supplementary optical system comprises at least one ophthalmoscopic lens (30a) disposed before the main objective lens (2) and at least one optical component (32a) disposed behind the main objective lens (2) for providing a refraction and a focussing of a viewing beam path passing through the main objective (2), and the optical axis (12d) of the magnification system (7) disposed behind the main objective extending essentially perpendicularly to the optical axis (11) of the main objective (2).
Abstract:
The process for preparing an aqueous alkaline solution containing a peroxide and/or percarbonate includes providing an electrochemical cell comprising a porous oxygen diffusion cathode including a carbon woven or nonwoven fabric, a gas diffusion anode containing a carbon woven or nonwoven fabric and fed gaseous hydrogen or an anode including a metal grid coated with a noble metal catalyst and coated on a side facing the cathode with a proton-permeable membrane acting as a solid polymer electrolyte, an electrolyte-containing chamber between the cathode and the anode containing an electrolyte and a direct current source connected across the anode and cathode; feeding an aqueous feed solution containing at least one alkali hydroxide and/or alkali carbonate in a concentration of from 30 to 180 g/l into the electrolyte-containing chamber to provide the electrolyte; supplying an oxygen-containing gas containing molecular oxygen to the carbon woven or nonwoven fabric of the cathode; operating the direct current source to provide an external cell voltage of from 0.5 to 2.0 volts across the anode and the cathode; and withdrawing, from the electrolyte in the chamber, the aqueous alkaline solution containing the peroxide and/or percarbonate as a product characterized by an H.sub.2 O.sub.2 /alkali molar ratio of less than 4.
Abstract:
The invention is directed to a stereoscopic endoscope wherein an intermediate image is generated in a rod-shaped endoscope attachment. The intermediate image is imaged into the focal plane of an objective. The objective can be the main objective of a surgical microscope with the objective having a long focal length or the main objective of a stereoscopic recording system. The main objective and an in-coupling optic conjointly define an inverted telescope.
Abstract:
In an insertable accessory module for a stereo microscope, in particular an operation microscope, two optical elements are pivotably arranged in the parallel observation beam paths after the main objective. A continuous variation of the stereo angle is possible by pivoting about two pivot shafts that are oriented perpendicular to the observation beam paths.
Abstract:
The membrane serves to cover a gas diffusion electrode on its outside surface facing a liquid electrolyte. The membrane is impermeable to gas and water-absorbent. It comprises a textile carrier layer. At least one gas-sealing layer, which contains ion exchange material and binder in a weight ratio from 10:1 to 1:2, is bonded to the textile carrier layer. In the manufacture of the membrane, an adhesive layer consisting of a binder in a solvent and subsequently at least one gas-sealing layer are applied to the textile carrier layer.