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公开(公告)号：WO1996041138A1
公开(公告)日：1996-12-19
申请号：PCT/US1996008631
申请日：1996-06-04
Applicant: MASIMO CORPORATION
Inventor： MASIMO CORPORATION , DIAB, Mohamed, Kheir , KIANI-AZARBAYJANY, Esmaiel , RAGSDALE, Charles, Robert , LEPPER, James M, Jr.
IPC: G01J03/10
CPC classification number: A61B5/1495 , A61B5/0205 , A61B5/02427 , A61B5/14552 , A61B5/6826 , A61B5/6838 , A61B2562/08 , G01J3/02 , G01J3/0254 , G01J3/027 , G01J3/0275 , G01J3/0291 , G01J3/10 , G01J2003/2866 , G01N21/255 , G01N21/274 , G01N21/31 , G01N21/3151 , G01N21/39 , G01N2021/3144 , G01N2201/0627
Abstract: The method and apparatus of the present invention provides a system wherein light-emitting diodes (LEDs) (162) can be tuned within a given range by selecting their operating drive current in order to obtain a precise wavelength. The present invention further provides a manner in which to calibrate and utilize an LED probe (150), such that the shift in wavelength for a known change in drive current is a known quantity. In general, the principle of wavelength shift for current drive changes for LEDs is utilized in order to allow better calibration and added flexibility in the use of LED sensors, particularly in applications when the precise wavelength is needed in order to obtain accurate measurements. The present invention also provides a system in which it is not necessary to know precise wavelengths of LEDs where precise wavelengths were needed in the past. Finally, the present invention provides a method and apparatus for determining the operating wavelength of a light-emitting element such as a light-emitting diode.
Abstract translation: 本发明的方法和装置提供了一种系统，其中可以通过选择其工作驱动电流来在给定范围内调节发光二极管（LED）162以获得精确的波长。 本发明还提供了校准和利用LED探针（150）的方式，使得驱动电流已知变化的波长偏移是已知量。 通常，利用LED的电流驱动变化的波长偏移原理，以便在使用LED传感器时更好地进行校准和增加灵活性，特别是在需要精确波长以获得准确测量的应用中。 本发明还提供一种系统，其中不需要知道过去需要精确波长的LED的精确波长。 最后，本发明提供一种用于确定诸如发光二极管的发光元件的工作波长的方法和装置。
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公开(公告)号：EP0832421A1
公开(公告)日：1998-04-01
申请号：EP96917089.0
申请日：1996-06-04
Applicant: MASIMO CORPORATION
Inventor： DIAB, Mohamed, Kheir , KIANI-AZARBAYJANY, Esmaiel , RAGSDALE, Charles, Robert , LEPPER, James M, Jr.
CPC classification number: A61B5/1495 , A61B5/0205 , A61B5/02427 , A61B5/14552 , A61B5/6826 , A61B5/6838 , A61B2562/08 , G01J3/02 , G01J3/0254 , G01J3/027 , G01J3/0275 , G01J3/0291 , G01J3/10 , G01J2003/2866 , G01N21/255 , G01N21/274 , G01N21/31 , G01N21/3151 , G01N21/39 , G01N2021/3144 , G01N2201/0627
Abstract: The method and apparatus of the present invention provides a system wherein light-emitting diodes (LEDs) (162) can be tuned within a given range by selecting their operating drive current in order to obtain a precise wavelength. The present invention further provides a manner in which to calibrate and utilize an LED probe (150), such that the shift in wavelength for a known change in drive current is a known quantity. In general, the principle of wavelength shift for current drive changes for LEDs is utilized in order to allow better calibration and added flexibility in the use of LED sensors, particularly in applications when the precise wavelength is needed in order to obtain accurate measurements. The present invention also provides a system in which it is not necessary to know precise wavelengths of LEDs where precise wavelengths were needed in the past. Finally, the present invention provides a method and apparatus for determining the operating wavelength of a light-emitting element such as a light-emitting diode.
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公开(公告)号：EP0832421B1
公开(公告)日：2002-08-28
申请号：EP96917089.3
申请日：1996-06-04
Applicant: MASIMO CORPORATION
Inventor： DIAB, Mohamed, Kheir , KIANI-AZARBAYJANY, Esmaiel , RAGSDALE, Charles, Robert , LEPPER, James M, Jr.
IPC: G01J3/10
CPC classification number: A61B5/1495 , A61B5/0205 , A61B5/02427 , A61B5/14552 , A61B5/6826 , A61B5/6838 , A61B2562/08 , G01J3/02 , G01J3/0254 , G01J3/027 , G01J3/0275 , G01J3/0291 , G01J3/10 , G01J2003/2866 , G01N21/255 , G01N21/274 , G01N21/31 , G01N21/3151 , G01N21/39 , G01N2021/3144 , G01N2201/0627
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