公开(公告)号：US09638635B2

公开(公告)日：2017-05-02

申请号：US14649096

申请日：2013-11-29

Applicant: HORIBA JOBIN YVON SAS

Inventor： Olivier Acher ,  Simon Richard ,  Christian Brach ,  Viviane Millet ,  Sebastien Corde ,  Daphne Heran

IPC: G01J3/447 ,  G01N21/64 ,  G01J3/02 ,  G01J3/18 ,  G02B27/28 ,  G02B5/18

CPC classification number: G01N21/645 ,  G01J3/021 ,  G01J3/0224 ,  G01J3/18 ,  G01J3/447 ,  G01N2201/063 ,  G01N2201/0633 ,  G02B5/1866 ,  G02B27/283

Abstract: A spectrometer (100) for analyzing the spectrum of an upstream light beam (1), includes an entrance slit (101) and collimating elements (110) suitable for generating, from the upstream light beam, a collimated light beam (10), characterized in that it also includes: a polarization-dependent diffraction grating (120) suitable for diffracting, at each wavelength (11, 12) of the spectrum of the upstream light beam, the collimated light beam into a first diffracted light beam (11, 12) and a second diffracted light beam (21, 22); optical recombining elements (130) including a planar optical reflecting surface (130) perpendicular to the grating and suitable for deviating at least the second diffracted light beam; and focussing elements (140) suitable for focussing, at each wavelength, the first diffracted light beam and the second diffracted light beam onto one and the same focussing area (141).