| 摘要 |
FIELD: physics, optics.SUBSTANCE: invention relates to a device for analysing luminescent biological microchips, having a sample holder and lighting means. The device includes laser sources for exciting fluorescent radiation and a fibre-optic system for distributing the laser radiation, a device for capturing the image of the sample, a filter for filtering fluorescent light of the sample and an optical system for projecting the fluorescent image of the sample on the image capturing device. The device is characterised by that the lighting means has an annular support around the periphery of which ends of the fibres of the fibre-optic system for distributing laser radiation are placed, wherein the fibre-optic system includes several bundles of optical fibres such that one bundle of fibres corresponds to one laser, wherein each bundle, on the side facing the sample when the sample is placed on the holder, is split into separate fibres, and the ends of the fibres from different lasers are arranged around the annular support with alternation and are directed towards the analysed sample when the sample is placed on the holder, at an acute angle to the axis of the annular support.EFFECT: device increases uniformity of illuminating different portions of a biochip when illuminated with different lasers by enabling illumination of a sample with exciting light from different sides using separate lasers or any combination of lasers.4 cl, 3 dwg |
