Patent ID: 6172785
Filing Date: 2001-01-09
Classification: G01N,G02B

Abstract:
A light scanning device for exciting and detecting secondary light of a sample, comprising:a light-emitting device for emitting excitation light having a wavelength which is suitable for exciting secondary light on or in the sample,a scanning unit for scanning at least one subarea of the sample with said excitation light, anda detection unit for the secondary light emitted in response to excitation of the sample, said detection unit comprising a detection optics and a detector device,wherein the detector device comprises a large number of detection elements arranged in an array with predetermined position coordinates, said detection elements being arranged in an imaging plane of the detection optics and converting light detected in a spatially resolved manner into electric signals, andthe detection optics is a varifocal optics with variable magnification arranged so that the image field size on the detector can be kept constant and the object field size on the sample can be varied.