公开(公告)号：EP3407036A1

公开(公告)日：2018-11-28

申请号：EP18173154.8

申请日：2018-05-18

Applicant: Kaiser Optical Systems Inc.

Inventor： Schipper, Darren ,  Slater, Joseph B. ,  Tedesco, James M.

IPC: G01J3/02 ,  G01J3/28

CPC classification number: G01J3/027 ,  G01J3/0264 ,  G01J3/28 ,  G01J3/42 ,  G01J2003/283

Abstract: The present disclosure relates to assistive mechanisms and methods that aid an operator of a spectrometer to make spectral measurements of a sample, the measurements having a desired quality. The method enables quality spectral measurements quickly and simply, without a prior understanding of a sample's spectrum or of the details as to how the spectrum is measured. Data quality is improved, and the time required to collect the data is reduced. While a specific example of sample optic focus is disclosed in detail, the optimization of numerous other parameters is possible.

公开(公告)号：EP3690555A1

公开(公告)日：2020-08-05

申请号：EP20151142.5

申请日：2020-01-10

Applicant: Kaiser Optical Systems Inc.

Inventor： Britton, Timothy J ,  Tedesco, James M.

IPC: G03H1/04 ,  G11B7/0065 ,  G11B7/126 ,  G03H1/22

Abstract: The effective coherence length of a single-frequency, solid-state laser is limited to reduce spurious, secondary holograms in conjunction with a holographic recording. The wavelength of the laser is varied or 'scanned' with high precision over a very small wavelength range. In an embodiment, the temperature of the laser's resonant cavity optical bench is altered, causing the dimension of the cavity to change and the emission wavelength to move in a controlled manner. The changing wavelength is monitored at high resolution, and a feedback control loop updates the temperature set-point to keep the monitored laser wavelength moving at a desired rate of change through a desired range. As the wavelength of the laser is scanned, the phase of the holographic interference pattern is locked at a position of maximum coherence/contrast within the holographic film aperture.

公开(公告)号：EP3401669A1

公开(公告)日：2018-11-14

申请号：EP18170989.0

申请日：2018-05-07

Applicant: Kaiser Optical Systems Inc.

Inventor： Tedesco, James M.

IPC: G01N21/64 ,  A61B1/00 ,  G01J3/44 ,  G01N21/65 ,  G01N21/85

CPC classification number: G02B23/243 ,  A61B1/00064 ,  G01J3/0208 ,  G01J3/0218 ,  G01J3/44 ,  G01N21/645 ,  G01N21/65 ,  G01N21/8507 ,  G02B23/2446 ,  G02B23/2469

Abstract: In one aspect of the present disclosure, improved end optics are disclosed that maximize the numerical aperture focused at a sample point (sample focus 720) while minimizing unwanted artifacts such as vignetting. The configurations also maintain centering of the excitation/collection beam on the objective (focus lenes 202) if the probe tilts or bends. The disclosed configurations are particularly suited to probes wherein the excitation and/or collection paths between the probe and the laser/analyzer are coupled through multimode fibers, such as in Raman and other forms of laser spectroscopy. The disclosure includes the insertion of one or more additional lenses (e.g. lenses 702, 704) between the probe head and the focusing objective at the probe tip.

公开(公告)号：EP3940357A1

公开(公告)日：2022-01-19

申请号：EP21183863.6

申请日：2021-07-06

Applicant: Kaiser Optical Systems Inc.

Inventor： Norwood, Timothy ,  Slater, Joseph B. ,  Tedesco, James M.

IPC: G01J3/02 ,  G01J3/28 ,  G01N21/27 ,  G01N21/65 ,  G01J3/44

Abstract: A method for harmonizing the responses of a plurality of Raman analyzers includes steps of calibrating an intensity axis response of a spectrometer to a reference light source and measuring a laser wavelength of a laser using the spectrometer. The method also includes steps of measuring a fluorescence spectrum induced by the laser at the laser wavelength of a plurality of standard reference material samples using the spectrometer, measuring a temperature of each standard reference material sample while measuring the fluorescence spectrum, and correcting the fluorescence spectrum of each standard reference material sample based on the respective temperature. The method further includes steps of deploying each standard reference material sample in one of a plurality of field calibrator devices and calibrating the intensity axis of one of the Raman analyzers using one of the field calibrator devices and the corrected fluorescence spectrum of the respective standard reference material sample.

公开(公告)号：EP3492908A1

公开(公告)日：2019-06-05

申请号：EP18205930.3

申请日：2018-11-13

Applicant: Kaiser Optical Systems Inc.

Inventor： Slater, Joseph B. ,  Tedesco, James M. ,  Esmonde-White, Francis

IPC: G01N21/65 ,  G01N21/35 ,  G01N33/00 ,  G01N21/359 ,  G01N21/3504

Abstract: The present disclosure includes discloses a method for analyzing a multi-component gas sample using spectroscopy in combination with the measurement of extrinsic or intrinsic properties of the gas sample. The results of the spectroscopic analysis and the measurement are combined to quantify a gas component unseen by the spectroscopic analysis.

公开(公告)号：EP3392631A1

公开(公告)日：2018-10-24

申请号：EP18165824.6

申请日：2018-04-05

Applicant: Kaiser Optical Systems Inc.

Inventor： Slater, Joseph B. ,  Tedesco, James M. ,  Feitisch, Alfred

IPC: G01J5/04 ,  G01J3/44 ,  G01J5/06

CPC classification number: G01J5/061 ,  G01J3/44 ,  G01J3/4406 ,  G01J5/046 ,  G01J2005/065 ,  G01N21/65

Abstract: A radiation shield for near-infrared detectors of the type used in Raman spectroscopic systems comprises a chamber enclosing the detector and a cooling device in thermal contact with the chamber and the detector to reduce the level of unwanted radiation to which the detector would otherwise be exposed. The chamber may include a window in optical alignment with the detector, and the window may include one or more coatings to pass wavelengths in a range of interest or block radiation at wavelengths outside of this range. The shield may be enclosed in an evacuated dewar having a window which may also include one or more coatings to favor the wavelength range.