摘要:
A method and a microscopy imaging apparatus for generating an optically sectioned image of a specimen are provided. The method comprises the steps of: illuminating the specimen with a modulating, spatially periodic illumination pattern; imaging said specimen on a conjugate image plane; acquiring a plurality of signals at respective positions on said image plane, each signal corresponding to the incident light intensity at that position and having an oscillatory component caused by the modulation of the illumination pattern; and measuring a characteristic of the oscillatory component of each of the signals, whereby the measured characteristics when combined in their relative positions generate an optically sectioned image of the specimen.
摘要:
The invention relates to a method and device for identifying luminescent molecules according to the fluorescence correlation spectroscopy method. The inventive method comprising the following steps: a) preparing a sample (12) containing luminescent molecules; b) illuminating the sample (12) using an optical excitation device (2,4,6,8) comprising at least one light source, at least one, in particular, diffractive optical element (7) for splitting light passing therethrough into multiple beams, and a focusing optics (8) for focusing multiple light beams passing therethrough into multiple confocal volume elements: c) capturing emission radiation from the multiple confocal volume elements by means of a locally resolving sensor matrix arrangement (20), whereby the sensor matrix arrangement is a sensor matrix, which is comprised of avalanche photodiodes AD is produced using IC technology, particularly CMOS technology, and is integrated in a sensor chip (20) with Greiger-mode wiring, and; d) processing the signals, which are provided by the avalanche photodiode matrix, by means of a signal processing and evaluation device preferably integrated in the sensor chip.
摘要:
At least one narrow-band emitting pump radiation source is provided in a laser arrangement having a laser medium to be pumped. The supplied pump radiation includes at least two pump radiation components which are different with respect to power. The component with lower power functions to generate a visible target beam. Such a laser arrangement is especially suitable in a medical laser system.
摘要:
A method and device for the rapid detection of biomolecules (320) diffusing in a nanometer-confined slit (204) is claimed. In particular, the present invention relates to a novel concept of fluidic side apertures (205) that facilitates the filling of the device, the surface coating with biomolecules and that measures the affinity between fluorescently labeled biomolecules in aqueous solution with other biomolecules immobilized on surfaces.
摘要:
A method and system for the rapid detection of biomolecular interactions, the system comprising a sensing platform which comprises a primary support structure including recesses designed to be located in front of a detection unit, said recesses containing one or several arrays of biosensors, said system furthermore comprising a reader unit for optical excitation and detection.
摘要:
A method and a microscopy imaging apparatus for generating an optically sectioned image of a specimen are provided. The method comprises the steps of: illuminating the specimen with a modulating, spatially periodic illumination pattern; imaging said specimen on a conjugate image plane; acquiring a plurality of signals at respective positions on said image plane, each signal corresponding to the incident light intensity at that position and having an oscillatory component caused by the modulation of the illumination pattern; and measuring a characteristic of the oscillatory component of each of the signals, whereby the measured characteristics when combined in their relative positions generate an optically sectioned image of the specimen.
摘要:
The reflecting surfaces within the resonator are minimized in an unstable laser resonator having a radially-dependent output end reflection profile and a passive Q-switch so that the least possible competing resonator geometries can be formed. For this purpose, a saturable absorber foil can be provided as a passive Q-switch element mounted so as to be inclined with respect to the optical axis. Furthermore, it is advantageous to use an output reflector having highly precise parallel boundary surfaces and to align this output reflector with high precision parallel to the end surfaces which delimit the laser medium.
摘要:
A method and device for the rapid quantification of biomolecules (320) present in a nanochannel (210) is claimed. In particular, the present invention relates to a novel concept of liquid actuation and selectively functionalized surfaces in a nanochannel that create a concentration gradient of transitory immobilized biomolecules (340) across the nanochannel. The present concept enables the quantification of biomolecular interactions of interest (320).
摘要:
The present invention relates to an apparatus and a method combining achromatic complex FDOCT signal reconstruction with a common path and dual beam configuration. The complex signal reconstruction allows resolving the complex ambiguity of the Fourier transform and to enhance the achievable depth range by a factor of two. The dual beam configuration shares the property of high phase stability with common path FDOCT. This is of importance for a proper complex signal reconstruction and is in particular useful in combination with handheld probes such as in endoscopy and catheter applications. The advantages of the present invention are in particular the flexibility to choose arbitrarily positioned interfaces in the sample arm as reference together with the possibility to compensate for dispersion.
摘要:
The invention concerns an optical imaging apparatus comprising (o) a light source (1), (p) sample holding means, (q) an interferometer, (r) reference means, (s) an objective (8) which is adapted to have its sample side focal plane crossing a sample held in said sample holding means, (t) optical or electro-optical means (2, 3, 5, 16) adapted to produce a ring shaped or multi-spot light source in the front focal plane (17) or any conjugated plane (17′) of said objective (8), at least one detector. The invention also includes a method for using said apparatus where the sample is illuminated by an interference pattern and the depth information is obtained by using optical Coherence Tomography.