Patent ID: 6483103
Filing Date: 2002-11-19
Classification: G01J,G02B

Abstract:
An apparatus for selecting and detecting at least one spectral region of a spectrally spread light beam (1) comprising:a focal line (2) defined by the apparatus wherein the spread light beam (1) being focussable in said focal line (2), an optical component (4) being arranged in the spread light beam (1) wherein the optical component (4) changes the direction of at least a portion of the spread light beam (1); and wherein the superposition of the portion of the spread light beam (1) and the optical component (4) defines an active region (4a), and a detector (3) being arranged with respect to the optical component (4) and receiving a smaller or larger portion of a spectral region (5) depending on the size of the active region (4a).