Array detector coupled spectroanalytical system and graded blaze angle grating
AssigneeFoster-Miller, Inc.
InventorsSuneet Chadha, Lawrence Curtiss
Life of this patent
Estimating the term…
Abstract
A spectroanalytical system for receiving radiation to be analyzed along a first path includes a grating in the first path with periodic faceted grooves for spatially separating the radiation as a function of wavelength. The blaze angles of the faceted grooves are progressively graded. A multielement detector detects radiation spatially separated by the grating. An optical conditioner is disposed in the first path between the grating and a multielement detector.
Claims34
A spectroanalytical system for receiving radiation to be analyzed along a first path, the system comprising:
- a grating in the first path having periodic faceted grooves for spatially separating said radiation as a function of wavelength in which blaze angles of the faceted grooves are progressively graded;
- a multielement detector for detecting radiation spatially separated by the grating;
- and
- an optical conditioner disposed in said first path between the grating and the multielement detector.
A spectroanalytical system for receiving radiation to be analyzed along a first path, the system comprising:
- a grating in the first path having periodic faceted grooves for spatially separating said radiation as a function of wavelength;
- a multielement detector for detecting radiation spatially separated by the grating;
- and
- an optical conditioner disposed in said first path between the grating and the multielement detector, the optical conditioner having a tangent to the vertex of an exit surface parallel or substantially parallel to a tangent at the vertex of the grating to minimize angles of incidence of said spatially separated radiation on the exit surface of the optical conditioner.
A spectroanalytical system for receiving radiation to be analyzed along a first path, the system comprising:
- a grating in the first path having periodic faceted grooves for spatially separating said radiation as a function of wavelength in which blaze angles of the faceted grooves are progressively graded;
- a multielement detector for detecting radiation spatially separated by the grating;
- and
- an optical conditioner disposed in said first path between the grating and the multielement detector, the optical conditioner having a tangent to the vertex of an exit surface parallel or substantially parallel to a tangent at the vertex of the grating to minimize angles of incidence of said spatially separated radiation on the exit surface of the optical conditioner.
A spectroanalytical system for receiving radiation to be analyzed along a first path, the system comprising:
- an optical conditioner disposed in the first path and having a proximal edge and a distal edge, the optical conditioner further including a grating on the distal edge having periodic faceted grooves for spatially separating said radiation as a function of wavelength in which blaze angles of the faceted grooves are progressively graded;
- and
- a multielement detector proximate the proximal edge of the optical conditioner for detecting radiation spatially separated by the grating.
A spectroanalytical system for receiving radiation to be analyzed along a first path, the system comprising:
- an optical conditioner disposed in said first path having periodic faceted grooves for spatially separating said radiation as a function of wavelength on its distal edge, the optical conditioner also having a tangent to the vertex of an exit surface parallel or substantially parallel to a tangent at the vertex of the grating on its proximal edge to minimize angles of incidence of said spatially separated radiation on the exit surface;
- and
- a multielement detector for detecting radiation spatially separated by the grating wherein the multielement detector is optically coupled to the exit surface of the optical conditioner diametrically opposite the vertex of the grating to maximize throughput.
A spectroanalytical system for receiving radiation to be analyzed along a first path, the system comprising:
- an optical conditioner disposed in said first path having a proximal edge and a distal edge, the optical conditioner including:
- a grating on the distal edge having periodic faceted grooves for spatially separating the radiation as a function of wavelength in which blaze angles of the faceted grooves are progressively graded;
- and
- a flat exit surface parallel or substantially parallel to the tangent at the vertex of the grating on the proximal edge to minimize angles of incidence of said spatially separated radiation on the flat exit surface;
- and
- a multielement detector for detecting radiation spatially separated by the grating wherein the multielement detector is optically coupled to the flat exit surface of the optical conditioner diametrically opposite the vertex of the grating to maximize throughput.
A spectroanalytical system for receiving radiation to be analyzed along a first path, the system comprising:
- a grating in the first path for spatially separating said radiation as a function of wavelength, the grating including progressively graded groove facet angles;
- a multielement detector for detecting radiation spatially separated by the grating;
- and
- an optical conditioner disposed in said first path between the grating and the multielement detector, the optical conditioner having a flat exit surface,
- wherein the multielement detector is optically coupled to the flat exit surface of the optical conditioner.
A spectroanalytical system for receiving radiation to be analyzed along a first path, the system comprising:
- a grating in the first path for spatially separating said radiation as a function of wavelength, the grating including progressively graded groove facet angles;
- a detector subsystem for detecting radiation spatially separated by the grating;
- and
- an optical conditioner disposed in said first path between the grating and the detector subsystem.
A spectroanalytical system for receiving radiation to be analyzed along a first path, the system comprising:
- a grating having faceted grooves in the first path for spatially separating said radiation as a function of wavelength in which blaze angles of the grooved facets of the grating are progressively graded;
- a multielement detector for detecting radiation spatially separated by the grating;
- an optical conditioner disposed in said first path between the grating and the multielement detector, the optical conditioner including a tangent to the vertex of an exit surface parallel or substantially parallel to a tangent at the vertex of the grating to minimize angles of incidence of said spatially separated radiation on the exit surface of the optical conditioner,
- wherein the multielement detector is optically coupled to the exit surface of the optical conditioner diametrically opposite the vertex of the grating to maximize throughput;
- and
- a sample cell optically coupled to the optical conditioner by a compound parabolic concentrator.
Dependencies are inferred from the claim text.