Abstract: The present invention relates to a device for the detection of a fluorescent dye in a sample, comprising a radiation source means with the aid of which light for exciting the fluorescent dye to be detected can be transmitted into the sample applied to a carrier, and a detecting means for detecting fluorescent light which has been emitted by the fluorescent dye to be detected. The present invention is characterized by a hollow space having an internal high-reflectance surface, a first aperture directed towards the sample, and a second aperture located opposite the detecting means.

Abstract: The present invention relates to a device for the detection of a fluorescent dye in a sample, comprising a radiation source means with the aid of which light for exciting the fluorescent dye to be detected can be transmitted into the sample applied to a carrier, and a detecting means for detecting fluorescent light which has been emitted by the fluorescent dye to be detected. The present invention is characterized by a hollow space having an internal high-reflectance surface, a first aperture directed towards the sample, and a second aperture located opposite the detecting means.

Abstract: The present invention relates to a device for the detection of a fluorescent dye in a sample, comprising a radiation source means with the aid of which light for exciting the fluorescent dye to be detected can be transmitted into the sample applied to a carrier, and a detecting means for detecting fluorescent light which has been emitted by the fluorescent dye to be detected. The present invention is characterized by a hollow space having an internal high-reflectance surface, a first aperture directed towards the sample, and a second aperture located opposite the detecting means.

Abstract: The present invention relates to a device for the detection of a fluorescent dye in a sample, comprising a radiation source with the aid of which light for exciting the fluorescent dye to be detected can be transmitted into the sample applied to a carrier, and a detecting device for detecting fluorescent light which has been emitted by the fluorescent dye to be detected. The present invention is characterized by a hollow space having an internal high-reflectance surface, a first aperture directed towards the sample, and a second aperture located opposite the detecting device.

Abstract: The present invention relates to a device for the detection of a fluorescent dye in samples, comprising a device for exciting the fluorescent dye to be detected, said device comprising a surface provided for the application of samples and an excitation light coupling device by means of which excitation light from a predefined direction of impingement can be coupled into the device in such a way that, by means of an evanescent field of the coupled light, the fluorescent dye to be detected can be excited in the samples applied, and further comprising a means for the detection of the fluorescent light emitted by the fluorescent dye to be detected. The present invention is characterized in that the device for exciting the fluorescent dye to be detected is provided in such a way that the surface to which the samples are to be applied is movable relative to the direction of impingement so as to excite the fluorescent dye to be detected in different subsections of said surface.

Abstract: The present invention relates to a light scanning device for exciting and detecting an emission of secondary light, especially fluorescent light, of a sample, comprising a light generating device for generating scanning light in the form of a single light beam, a deflection unit used for effecting a deflection of the scanning light for scanning at least one subarea of the sample, said deflection being variable in at least one direction, an imaging unit for forming an image of the secondary light emanating from the sample, and a detection unit for detecting the secondary light. When a sample with a large surface to be rastered is subjected to fluorescence examination with high spatial resolution, undesirably long scanning times occur. For reducing the scanning time and for simultaneously maintaining the high resolution in the case of such a sample, the light scanning device according to the present invention comprises a division device for dividing the single light beam into at least two light beams.

Abstract: A light scanning device for exciting and detecting secondary light, especially fluorescent light, on a sample, comprising a light emission device for emitting exciting light with a wavelength suitable for exciting secondary light on or in said sample, a focussing optics for focussing the exciting light on a subarea of said sample, a sample holding device for releasably holding the sample, a detection unit comprising a detection optics for the secondary light emitted by the sample in response to excitation and a detector device for converting the detected and imaged secondary light into electric signals. In the case of conventional known light scanning devices, scanning is carried out by means of a deflection unit consisting of tilting mirrors. Due to the long path of the light beam, positioning inaccuracies of the tilting mirrors result in major position inaccuracies of the scanning ray bundle on the surface of the sample.

Abstract: The present invention refers to a dual-beam polychromator comprising a reflecting dispersion grating, a first entrance slit for a first ray bundle, a second entrance slit for a second ray bundle and first and second detector devices respectively used for simultaneously detecting the spectra of the first and second ray bundles diffracted at the dispersion grating. Dual-beam polychromators which are known according to the prior art and which have their respective entrance slits arranged directly adjacent the detector devices of the other channel cause substantial structural difficulties with regard to the mechanical provision of the respective components.

Abstract: A double monochromator comprises an inlet slit 20, which is imaged in the plane of an intermediate slit 34 through a first grating monochromator 36. The intermediate slit 34 is imaged in the plane of the outlet slit 34 through a second grating monochromator 58 identical with the first grating monochromator 36. Deflecting mirrors 64 and 66 can be moved into the path of rays to enable such a double monochromator to be optionally used as a single monochromator with increased light flux. An additional slit is arranged between the deflecting mirrors 64 and 66. The arrangement is such so that essentially identical beam geometries result at the outlet in both of the operation modes.

Abstract: A photomultiplier (10) with an elongated rectangular, cathode (20) tilted with respect to the inlet opening (14) is alternately illuminated by a measuring light beam (36) and a reference light beam (40). The measuring light beam (36) and the reference light beam (40) extend in a plane parallel to the longitudinal sides of the cathode (20) and impinge upon the cothode (20), such that they illuminate the same areas of the cathode (20).

Abstract: In an atomic absorption spectrophotometer for multielement analysis, the light from a plurality of light sources each of which emits the resonance lines of one associated looked-for element is superimposed into a single light beam by means of interconnected light guides. The light is directed onto a polychromator 64 via an optical coupler.

Abstract: In a double-beam photometer comprising a light source providing a light beam, detector means, a sample area, optical means for guiding the light beam as a measuring light beam through the sample area onto the detector means, means for guiding the same light beam as a reference light beam onto the detector means while avoiding the sample area, and chopper means disposed in a splitting location for splitting the light beam into the measuring light beam, which are combined into one path of rays in a recombination location, after the measuring light beam has passed through the sample area, with the splitting location and the recombination location being spatially close to each other. The chopper means has a single chopper which simultaneously effects the splitting and the combination of the measuring and reference light beams.

Abstract: A monolithically integrated semiconductor matrix circuit arrangement comprising switching elements which are connected in pairs at one terminal. This common terminal of the pair of switching elements is connected to an input (or output) circuit path and other terminal of each switching element is connected individually to an output (or input) circuit path respectively.