Patent ID: 7508507
Filing Date: 2009-03-24
Classification: G01J,G02B

Abstract:
1. An apparatus for selecting and detecting at least two spectral regions of a light beam, the apparatus comprising: an illuminating optical system configured to direct illuminating light onto a sample so as to produce detection light along a detection beam path; a selection device disposed in the detection beam path, the selection device including a mirror slide; a detection device disposed in the detection beam path, the detection device including a detector; a light suppression device configured to suppress at least one of reflected and scattered light of the illuminating light, the light suppression device being disposed in the detection beam path between the selection device and the detection device, the light suppression device including a graded filter, the graded filter being disposed between the mirror slide and the detector; and at least one microlens configured to image the spectral regions onto at least one of the graded filter and the detection device, and wherein the graded filter includes a plurality of long-pass filters each having a respective different characteristic.