Wide-band spectrometer with objective comprising an aspherical corrector mirror
AssigneeGalileo Avionica S.p.A.
InventorsAlberto Caruso, Andrea Romoli, Matteo Taccola
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Abstract
The spectrometer comprises at least a first optical path for a beam of electromagnetic radiation, along which the following are set: a beam-entry slit (1) for an incoming beam; a collimator (5) comprising a convergent spherical mirror for collimation of the incoming beam; a first dispersor (9) for dispersion of the beam into its chromatic components; a first focusing system (19); and a first detector (21) which receives the beam dispersed and focused by said first focusing system. Set along the first optical path there is set at least one first aspherical corrector element (7; 17) comprising an aspherical mirror for correction of spherical aberration.
Claims22
A spectrometer with at an optical path for a beam of electromagnetic radiation, the spectrometer comprising:
- a beam-entry slit for an incoming beam;
- a collimator for collimating the incoming beam to provide a collimated beam, said collimator comprising a convergent spherical mirror;
- an aspherical corrector element comprising an aspherical mirror for correction of spherical aberration introduced along the optical path, said aspherical corrector being arranged between said collimator and a dispersor to receive said collimated beam and provide a conditioned collimated beam;
- said dispersor positioned downstream of said collimator, said dispersor receiving said conditioned collimated beam and dispersing said collimated beam into a dispersed beam comprising chromatic components of said collimated beam;
- a focusing system downstream of said dispersor receiving said dispersed beam from said disperser and focusing said dispersed beam to provide a focused beam, said focusing system comprising a convergent spherical mirror;
- and
- a detector which receives said focused beam from said focusing system, each of said beam entry slit, said convergent spherical mirror, said aspherical mirror, said disperor, and said detector being along said optical path.
A spectrometer comprising at least one first optical path for a beam of electromagnetic radiation, along which the following are set:
- a beam-entry slit for an incoming beam;
- a collimator for collimation of the incoming beam;
- a first dispersor for dispersion of the bean into its chromatic components;
- a first focusing system;
- and
- a first detector which receives the beam dispersed and focused by said first focusing system:
- along said first optical path there being set at least a first aspherical corrector element for correction of spherical aberration, wherein:
- said collimator comprises a convergent spherical mirror;
- said first focusing system comprises a convergent spherical mirror;
- and
- said first aspherical corrector element comprises a first aspherical mirror, wherein said first dispersor comprises a disperser grating, wherein said disperser grating is provided on a surface of said first or said second aspherical corrector element.
A spectrometer comprising at least one first optical path for a beam of electromagnetic radiation, along which the following are set:
- a beam-entry slit for an incoming beam;
- a collimator for collimation of the incoming beam;
- a first dispersor far dispersion of the beam into its chromatic components;
- a first focusing system;
- and
- a first detector which receives the beam dispersed and focused by said first focusing system;
- along said first optical path there being set at least a first aspherical corrector element for correction of spherical aberration, wherein:
- said collimator comprises a convergent spherical mirror;
- said first focusing system comprises a convergent spherical mirror;
- and
- said first aspherical corrector element comprises a first aspherical mirror, wherein said spectrometer comprises, along said first optical path, a beam splitter, downstream of which said first optical path is prolonged and a second optical path develops, there being set at least one second detector along said second optical path.
Dependencies are inferred from the claim text.