Spectrometer with multiple gratings
First Claim
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1. A spectrometric measurement apparatus for measuring intensity distributions of optical radiation, the measurement apparatus comprising:
- a collimator adapted to produce a beam of incident radiation,a first diffractive grating at a location where said first diffractive grating is adapted to receive a first part of said incident radiation,a second diffractive grating at a location where said second diffractive grating is adapted to receive a second part of said incident radiation at the same time when said first diffractive grating receives said first part of said incident radiation, anda detector arrangement at a location where said detector arrangement is adapted to receive radiation diffracted by said first and second diffractive gratings;
wherein at least one grating parameter of the first diffractive grating is different than a corresponding grating parameter of said second diffractive grating.
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Abstract
A spectrometric measurement apparatus comprises a collimator (401), a first diffractive grating (403), a second diffractive grating (404), and a detector arrangement (407). Incident radiation (402) from the collimator (401) is diffracted to the detector arrangement (407) either directly or through mirrors so that the first (403) and second (404) diffractive gratings diffract different wavelength ranges.
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12 Claims
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1. A spectrometric measurement apparatus for measuring intensity distributions of optical radiation, the measurement apparatus comprising:
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a collimator adapted to produce a beam of incident radiation, a first diffractive grating at a location where said first diffractive grating is adapted to receive a first part of said incident radiation, a second diffractive grating at a location where said second diffractive grating is adapted to receive a second part of said incident radiation at the same time when said first diffractive grating receives said first part of said incident radiation, and a detector arrangement at a location where said detector arrangement is adapted to receive radiation diffracted by said first and second diffractive gratings; wherein at least one grating parameter of the first diffractive grating is different than a corresponding grating parameter of said second diffractive grating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification