| 摘要 |
The invention relates to a light-scanning device for exciting and detecting secondary light, especially fluorescent light, on a sample, comprising a lightemitting device to emit exciting light with a suitable wavelength for exciting secondary light on or in said sample, a scanning unit for scanning at least one sub-area of said sample with said exciting light, and a sensing unit for the secondary light emitted when said sample is excited, with a collecting lens and a detecting device. When non-local resolution point detectors are used, the detector must be read and reinitialized every time any scanning spot on the sample has been lit. This requires a waiting period before the scanning ray can be used further. The inventive device uses a detecting device with a number of detecting elements positioned in a field at predetermined coordinates in order to avoid this disadvantage and increase the reading speed and at the same time improve the local resolution on the sample. Said detecting elements, which are positioned in an imaging plane of said collecting lens, convert local resolution-detected light into electrical signals.
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