OPTICAL SYSTEM FOR SPECTROMETERS

• Main Authors: Simons, Rainer, Graf, Heinz Jürgen
• Format: Patent
• Language: English; French; German
• Published: 12.05.2021
• Subjects: COLORIMETRY; MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT; MEASURING; PHYSICS; RADIATION PYROMETRY; TESTING

The invention relates to an optical system 1 comprising: at least one entrance aperture 2 for entering light L to be analyzed, at least one diffraction grating 3 for spectral dispersion of the light L, at least one vertically focusing mirror element 4, 4a for focusing and deflecting the light L out of the plane of dispersion, and at least two detectors 5, 5a, 5b to measure the spectrum of the light L, wherein each vertically focusing mirror element 4 is assigned to one detector. It is suggested that the at least one vertically focusing mirror element 4, 4a is arranged along or intersecting at least one polygon graph 6, each segment of which is parallel to its dedicated local tangent to the focal curve of the grating 3, such that the adjacent end 7a of the at least one vertically focusing mirror element 4, 4a is overlapping the receptive area of an adjacent direct light detector or, if present, another adjacent mirror element, that the maximum distance d between vertically focusing mirror element and detector is minimized to minimize the width of the transition zones and that the angle of deflection |ϕ| for the (front row) mirror element is < 90°.