Abstract:
PROBLEM TO BE SOLVED: To provide a temperature-compensated spectrometer having a sufficiently small change of dispersion characteristic even if a temperature is changed, and to provide an optical apparatus using such a spectrometer. SOLUTION: The spectrometer includes: an emission part from which light is emitted; a dispersion element arranged on the light emission side of the emission part; an incidence part entered by dispersed light by the dispersion element; and a temperature compensation element arranged between the emission part and the incidence part, wherein an incident angle of the dispersed light into the incidence part is approximately constant with respect to a temperature change in a using temperature change. The optical apparatus includes such a temperature-compensated spectrometer. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
Eine optische Anordnung, insbesondere zum Einsatz als Hauptstrahlteiler und/oder Strahlvereiniger in einem Mikroskop, in die ein oder mehrere Lichtstrahlen (11, 12, 15, L 1 , L 2 , L 3 ) einkoppelbar sind und aus der mindesten einer der eingekoppelten Lichtstrahlen (11, 12, 15, L 1 , L 2 , L 3 ) nach Durchlaufen der optischen Anordnung (1, 11) wieder auskoppelbar ist, ist im Hinblick auf eine möglichst freie Beeinflussbarkeit des ausgekoppelten Lichtstrahls dadurch gekennzeichnet, dass in den eingekoppelten Lichtstrahlen (11, 12, 15, L 1 , L 2 , L 3 ) ein steuerbares mikrostrukturiertes Element (5), beispielsweise ein Digital Micromirror Device (DMD), angeordne ist, mit dem Strahlengänge innerhalb der optischen Anordnung (1, 1') schaltbar sind, wodurch der/die ausgekoppelte/n Lichtstrahl/en steuerbar und/oder beeinflussbar ist/sind.
Abstract:
An apparatus for carrying out spectral analysis of optical radiation emitted from a light source (11) comprises a spectral detector (1) having an entrance aperture (10) for the radiation from thelight source (11), a first imaging optical component (12), a diffraction grating (14) for wavelength dispersion of the radiation, order sorting means (131, 132) for separation of the spectral orders of the diffraction grating (14), a second imaging optical component (15), and a detecting unit (16) for registration of the light source spectrum divided into order spectra through the order sorting means (131, 132). The order sorting means (131, 132) comprise at least two refractive optical components manufactured from different material. The two refractive optical components (131 and 132) together with the diffraction grating (14) and the imaging optical components (12 and 15) produce a substantially uniform distribution of the order spectra on the detector unit (16). Favourably the order sorting means (131, 132), the diffraction grating (14) and the imaging optical components (12, 15) also co-act to produce a substantially stigmatic image of the entrance aperture (10) in at least one point on the detector unit (16).