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    71.
    发明专利
    未知

    公开(公告)号：ES2151064T3

    公开(公告)日：2000-12-16

    申请号：ES95919724

    申请日：1995-05-15

    Applicant: MULTICHANNEL INSTR AB

    Inventor： LINDBLOM PETER

    IPC: G01J3/02 ,  G01J3/12 ,  G01J3/16 ,  G01J3/18 ,  G01J3/24

    Abstract: PCT No. PCT/SE95/00543 Sec. 371 Date Jan. 21, 1997 Sec. 102(e) Date Jan. 21, 1997 PCT Filed May 15, 1995 PCT Pub. No. WO95/31703 PCT Pub. Date Nov. 23, 1995An 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 (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).

    Optical spectrometer for detecting spectra in separate ranges
    72.
    发明专利
    Optical spectrometer for detecting spectra in separate ranges 未知

    公开(公告)号：AU713793B2

    公开(公告)日：1999-12-09

    申请号：AU5248596

    申请日：1996-05-24

    Applicant: PERKIN ELMER CORP

    Inventor： BARNARD THOMAS W

    IPC: G01J1/04 ,  G01J3/02 ,  G01J3/18 ,  G01J3/24 ,  G01J3/26 ,  G01J3/32 ,  G01J3/42 ,  G02B5/18

    Abstract: The spectrometer includes initial dispersion device receptive of source radiation to effect light radiation in the form of an initial spectrum, a number of dispersion gratings receptive of the initial spectrum and being crossed with the initial dispersion device to effect a spectrally dispersed beam, and detector device comprising a two dimensional array of photodetectors receptive of the beam for spectral detection. The dispersion grating has a grating surface comprising two surface portions. The first portion has a first groove configuration for effecting the dispersed beam in a first spectral range, and the second portion has a second groove configuration for effecting the dispersed beam in a second spectral range different from the first spectral range.

    Apparatus for carrying out spectral analysis of an optical light source using image detection and separation of special spectral orders
    73.
    发明专利
    Apparatus for carrying out spectral analysis of an optical light source using image detection and separation of special spectral orders 未知

    公开(公告)号：AU2542495A

    公开(公告)日：1995-12-05

    申请号：AU2542495

    申请日：1995-05-15

    Applicant: NOW OPTICS AB

    Inventor： LINDBLOM PETER

    IPC: G01J3/02 ,  G01J3/12 ,  G01J3/16 ,  G01J3/18 ,  G01J3/24

    Abstract: PCT No. PCT/SE95/00543 Sec. 371 Date Jan. 21, 1997 Sec. 102(e) Date Jan. 21, 1997 PCT Filed May 15, 1995 PCT Pub. No. WO95/31703 PCT Pub. Date Nov. 23, 1995An 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 (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).

    78.
    发明专利
    未知

    公开(公告)号：DE1547113A1

    公开(公告)日：1969-12-18

    申请号：DE1547113

    申请日：1966-04-15

    Applicant: APPLIED RES LAB INC

    Inventor： F HASLER MAURICE ,  B NICHOLSON JAMES

    IPC: G01J3/18 ,  G01J3/24 ,  G02B5/18 ,  G21K1/06

    Abstract: 1,141,612. X-Ray diffraction apparatus with blazed grating. APPLIED RESEARCH LABORATORIES Inc. 18 April, 1966 [21 April, 1965], No. 16983/66. Heading H5R. [Also in Division G2] In a spectrograph comprising a sharply blazed diffraction grating the input and output angles are so varied that for each wavelength of interest the condition for constructive interference is satisfied at the peak of the blaze. Where the grating is reflective this is accomplished by making the output angle differ from the input angle by twice the blaze angle of the grating or in a transmission grating, having a small blaze angle, by making the output angle differ from the input angle by approximately the product of the refractive index of the grating minus unity, times the blaze angle. When the radiation is of short wavelengths, such as in the soft X-ray region, additionally, the angle between the incident light and the reflecting facets of the grooves of the grating is kept smaller than the critical angle of total external reflection so that the grating highly discriminates against second and higher orders. As shown, Fig. 2, a bell crank 64 is pivoted at 70, 76, to define a chord of the Rowland circle 18, the centre of which lies at the apex 68 of the bell crank. The pivots 70, 76, slide in slots 72, 62, whose extensions would melt at 14 where the input slit is placed, the slots 72, 62 being inclined to each other at an angle equal to one half the apex angle of the bell crank 64. The grating 11, which has a radius of curvature twice that of the Rowland circle 18, fixed to the bell crank 64 at the pivot 76, the latter being moved along slot 62 by a screw 81 and nut 80. A parallelogram linkage 26, 27, 28, 29 has two arms 26, 27 pivoted together in line with the centre of grating 11, the arm 26 being fixed to nut 80 and held in alignment with screw 81, so that it is always at the input angle relative to grating 11. Arms 28, 29 have their common pivot 31 sliding in a guideway 69 in the outer end of arm 65 of the bell crank 64. The output slit 20 and detector 22 are mounted on a carriage 24 which is slidable along a guideway 34 and maintained on the Rowland circle 18 by a link 98 pivoted at the apex 68. The guideway 34 is pivoted on the pivot 76 and adjustably fixed to the arm 27, such as by the screw arrangement 36, so that the difference between the input and output angles is kept constant and made equal to twice the blaze angle of the grating 11.

    INTEGRATED CHIRPED-GRATING SPECTROMETER-ON-A-CHIP
    80.
    发明申请
    INTEGRATED CHIRPED-GRATING SPECTROMETER-ON-A-CHIP 有权

    公开(公告)号：US20220412800A1

    公开(公告)日：2022-12-29

    申请号：US17777805

    申请日：2020-11-19

    Applicant: UNM RAINFOREST INNOVATIONS

    Inventor： Steven R.J. BRUECK ,  Payman ZARKESH-HA ,  Alexander NEUMANN

    IPC: G01J3/24 ,  G02B6/42 ,  G01J3/02 ,  G01J3/04 ,  G01J3/18

    Abstract: A spectral sensor and a method for forming the spectral sensor is disclosed. The spectral sensor includes a planar waveguide on a substrate; a restriction mechanism that restricts a range of angles of incidence of light impinging onto the chirped input coupling grating; the chirped input grating formed to couple incident light into the planar waveguide, wherein the chirped input coupling grating comprises a first transverse chirp to provide a spectrally selective coupling of incident light Into the planar waveguide; a propagation region to filter out light that is not coupled into the planar waveguide; a detector array arranged on the opposite side of the propagation region from the chirped input coupling S grating to receive light coupled out of the planar waveguide and produce output signals representative of the light; and an electrical circuit to readout output signals from the detector array.

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