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    Improvements in Spectroscopes and Spectrographs and Refracting Prisms used therewith.
    121.
    发明专利
    Improvements in Spectroscopes and Spectrographs and Refracting Prisms used therewith. 未知

    公开(公告)号：GB191010330A

    公开(公告)日：1910-08-11

    申请号：GB191010330D

    申请日：1910-04-27

    Applicant: FERY CHARLES

    Inventor： FERY CHARLES

    IPC: G01J3/16

    Abstract: 10,330. FÚry, C. Jan. 20, [Convention date]. Spectroscopes; prisms. - A prism P is employed in spectroscopy, having t w o spherical surfaces, of which the front one refracts and the hinder is silvered to act as a reflector. In this way, collimating- lenses &c. are dispensed with, the arrangement being such that rays refracted at the first surface are either normally reflected at the second surface or normally refracted on leaving the first. In the form shown, the slit is at C and the spectrum is formed at A, where it can be examined by means of an eye-piece, or photographed. The spectrum may be formed near the slit, but is not then so convenient for inspection &c. It can be shown that the centre of curvature A of the front surface, the centre of curvature B of the hinder surface, the slit C, and the operative part PQ of the front surface all fall on the same circle.

    Optical filtering device
    125.
    发明专利
    Optical filtering device 未知

    公开(公告)号：GB2402227B

    公开(公告)日：2005-03-09

    申请号：GB9311954

    申请日：1993-06-10

    Applicant: SECR DEFENCE ,  QINETIQ LTD

    Inventor： BEALE MARC IVOR JOHN ,  LEWIS MEIRION FRANCIS

    IPC: G01J3/02 ,  G01J3/16 ,  G02B5/20 ,  G02B26/00 ,  G02B27/46

    Abstract: An optical filtering device incorporates first and second prisms, the latter prism counteracting the angular dispersion of the former prism. A spatial light modulator provides a positionally variable optical stop located to block radiation within a wavelength interval and received from a location within a scene. Unobscured radiation from that and other scene locations passes to a camera, which produces an image on a display. Opaque pixels in the stop are positioned to block unwanted light sources. The invention attenuates potentially dazzling monochromatic radiation while retaining radiation at other wavelengths for imaging purposes.

    128.
    发明专利
    未知

    公开(公告)号：DE69518244D1

    公开(公告)日：2000-09-07

    申请号：DE69518244

    申请日：1995-05-15

    Applicant: MULTICHANNEL INSTR AB SKARPNAE

    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).

    129.
    发明专利
    未知

    公开(公告)号：SE502809C2

    公开(公告)日：1996-01-22

    申请号：SE9401669

    申请日：1994-05-16

    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).

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