摘要:
A device for simultaneously and/or group wise random measuring fluorescence light emitted by sample-reagent mixtures contained in a plurality of reaction vessels, comprising (a) an array (12) of photodiodes (13) built on a chip (14), each of the photodiodes (13) of the array being apt to receive fluorescent light (15) emitted by a sample-reagent mixture (16) contained in one of said plurality of reaction vessels (17) and to provide an output signal representative of the intensity of said fluorescent light (15), and (b) an integrated electronic circuit (18) connected to said array (12) of photodiodes for processing output signals provided by photodiodes (13) of said array, said integrated electronic circuit (18) being mounted on said chip (14) on which said array (12) of photodiodes is built, and the output of each of the photodiodes (13) of said array (12) of photodiodes being directly connected to a corresponding input of said integrated electronic circuit (18).
摘要:
A reference device for evaluating the performance of a confocal laser scan microscope. The reference device comprises a substrate (53) and reference fluorescing matter distributed over a surface of the substrate (53). The reference fluorescing matter has a predetermined spatial distribution over the latter surface.
摘要:
The apparatus comprises a square, metallic vessel holder (11) with twenty-four chambers (13) arranged to smoothly take up in an upright position changeable, transparent reaction vessels used to carry biological reaction liquids of about 100 µl. At the side walls of the chambers (13) are arranged two connectors (21, 22) with associated boreholes. Within these holes are removably fixed first (32) and second optic fibers (31). These fibers are connected in such a manner, that the axial extensions of the fibers (31, 32) meet one another approximately at a same point of the chamber's axle, and in such a manner, that light escaping from the first fibers (32) cannot reach the second fibers (31) directly. The open ends of the fibers are connected to a common light source and individually to associated light receivers, respectively.
摘要:
The apparatus (10) comprises four square vessel holders (11.1 to 11.4) each of the holders taking up to twenty-four removable reaction-vessels 18. The different holders allow independent temperature cycles for the different groups of vessels (18). A single light source (13) produces the excitation light needed. A network of two different kinds of optic fiber bundles (41, 45) transmits this light to the reaction vessels through a first set of interference filters (21.1 to 21.4), second optical units paralleling and focusing the light, respectively. A test branch 41.6 of the first bundle (41) is connected to a reference unit (43) for control purposes. Fluorescence light emitted by sample-reaction-mixtures is collected by third optic fibers (47) and is transmitted through a second set of interference filters (23.1 to 23.4) to individually assigned light receiving elements (51). The filters are carried by wheels (22, 24) which are rotated stepwise and in synchronism with each other. This allows to change periodically the wavelength of excitation light and the kind of monitoring. The apparatus makes possible free handling of the vessel holders (11.1 to 11.4) and random access to vessels to be monitored.