WO2000014496A1 - Systeme de spectrophotometrie - Google Patents

Systeme de spectrophotometrie Download PDF

Info

Publication number
WO2000014496A1
WO2000014496A1 PCT/US1999/018963 US9918963W WO0014496A1 WO 2000014496 A1 WO2000014496 A1 WO 2000014496A1 US 9918963 W US9918963 W US 9918963W WO 0014496 A1 WO0014496 A1 WO 0014496A1
Authority
WO
WIPO (PCT)
Prior art keywords
card
spectrophotometer
integrated
pcmcia
under test
Prior art date
Application number
PCT/US1999/018963
Other languages
English (en)
Inventor
Robert J. Hutchison
Jay M. Eastman
Peter A. Ciaccia, Jr.
Original Assignee
Lucid, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lucid, Inc. filed Critical Lucid, Inc.
Priority to EP99943781A priority Critical patent/EP1025425A4/fr
Priority to AU56812/99A priority patent/AU5681299A/en
Priority to CA002329196A priority patent/CA2329196A1/fr
Publication of WO2000014496A1 publication Critical patent/WO2000014496A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0256—Compact construction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0256—Compact construction
    • G01J3/0259—Monolithic
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0264—Electrical interface; User interface
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0291—Housings; Spectrometer accessories; Spatial arrangement of elements, e.g. folded path arrangements

Definitions

  • the present invention relates to spectrophotometer systems which are integrated into a card adapted to be inserted into a miniature computer, such as a laptop computer, which card may be an industry-standard PCMCIA card.
  • PCMCIA is the acronym for Personal Computer Memory Card International Association which has established the protocols and data formats for computer cards.
  • the invention provides a compact, lightweight spectrophotometer that can be installed in a standard computer connector which may be associated with a miniature computer or a computer terminal; for example, a handheld computer terminal having its own microprocessor keyboard and display.
  • a range finder may also be integrated into the card for controlling the illumination of the object under test and/or the sensitivity of the spectrophotometer in accordance with its distance form that object, as well as measuring the size of the object and/or its environs.
  • the invention provides a spectrophotometer mounted on and integrated with a miniature printed circuit card of the PCMCIA class and affords spectrophotometry capabilities in miniature computer and computerized devices such as laptop and palmtop computers and handheld terminals which have slots for PCMCIA cards.
  • other facilities may be provided, such as illumination of objects under test and measurements of the dimensions thereof, thereby further enhancing the utility of the spectrophotometer system.
  • the present invention advances the art by providing an improved spectrophotometer system, and especially a spectrophotometer integrated in a PCMCIA card which is adapted to be inserted into a slot for such cards in miniaturized, computerized devices.
  • the card with its integrated spectrophotometer and other component, except for an edge connector may be an enclosed electro-optic module.
  • an essentially solid state spectrophotometer such as the spectrophotometer sold by American Laubscher Corporation of Farmingdale, N.Y. 11735, may be integrated into a PCMCIA card in a form factor (with dimensions) specified for such a card.
  • the present invention also provides an improved PCMCIA spectrophotometer card having a plurality of measurement capabilities, including spectral measurement of an object, measurement of the dimensions of the object, and of its environs.
  • the invention provides a PCMCIA card spectrophotometer system having a card with inner and outer edges, and mounting at the inner edge thereof, a connector adapted to mate with a corresponding (female) connector at the bottom of a PCMCIA card receiving slot of the computerized device.
  • a spectrophotometer having a detector which provides a spectral output signal.
  • the spectral output signal is processed in a computer processor and controller which receives commands from the computerized device and transmits signals derived from the spectral measurements in the spectrophotometer to the computerized device.
  • the card may carry a source of illumination and connectors for a dual fiber optic cable which carries illumination to the object under test and receives the illumination which is spectrally analyzed in the spectrophotometer integrated into the PCMCIA card.
  • a range finder may also be integrated and enclosed with the spectrophotometer and the card in the unitary structure for spectrophotometer and an illumination control in accordance with the range to the object under test or for measurement of the size of the object and/or its environs.
  • FIG. 1 is a plan view of a PCMCIA spectrophotometer card system located in place in a slot in a computerized device;
  • FIG. 2 is a simplified, schematic plan view of the spectrophotometer section of the PCMCIA spectrophotometer system
  • FIG. 3 is a side view of the spectrophotometer section shown in FIG. 2;
  • FIG. 4 is a diagram of a PCMCIA spectrophotometer system which is adapted to be still further miniaturized than the system shown in FIGS. 1-3 by use as an application specific integrated circuit;
  • FIG. 5 is a block diagram of the circuit of the application specific integrated circuit of the PCMCIA card spectrophotometer system shown in FIG. 4;
  • FIG. 6 is a plan view of a PCMCIA dual function spectrophotometer and range finder card.
  • FIG. 7 is a block diagram of the circuitry of the card illustrated in FIG. 6.
  • a slot 10 for PCMCIA cards having an open end 12 and a connector 14, such as a standard PCMCIA card connector, which may be a female connector, at the bottom of the slot.
  • the slot may be in a miniature, computerized device, such as a computer terminal, laptop computer or other device which has PCMCIA card slots.
  • a PCMCIA card 16 has at the inner edge (not shown) thereof a standard PCMCIA card connector 18. When the card 16 is inserted into the slot 10, the connector 18 engages the connector 14 to provide connections to the computer of the computerized device having the slot 10, as for example to the bus which is connected to the computer and carries operating power and signals.
  • the integrated spectrophotometer card has the advantage of a unitary construction in which the electro-optic module is completely enclosed as indicated by the dash line 19 with the exception of the electrical connectors 18, optional power connector for power supply 40 and optical interfaces to the spectrophotometer 24.
  • the optical interfaces are preferably fiber-optic connectors 32 and 34.
  • the enclosure protects against mechanical and electrical damage when the card is being handled or stored outside of the computer 10.
  • the preferred enclosure is a sheet metal or plastic enclosure which wraps in circumferential manner around the card and its integrated with the connector 18 and the optical interface of spectrophotometer 24. The outside dimensions of this enclosure are with the PCMCIA standards.
  • a spectrophotometer 24 At the front edge 20 of the card 16, and preferably projecting out of the open end 12 of the slot 10 is a spectrophotometer 24.
  • the spectrophotometer 24 is preferably integrated into the card 16 to provide a unitary structure package to have a form factor compatible with the dimensional standards for a PCMCIA card.
  • This spectrophotometer is shown generally in FIG. 1 as having an optical section 26 and a detector array 28, which may be enclosed by a cover 27.
  • An optical fiber connector 30 brings light in from an optical fiber 32 (FIG. 1) to the spectrophotometer.
  • This optical fiber may be a dual channel fiber optic cable, wherein a fiber 34 carrying illumination from a lamp 36 mounted on the card 16 is part of the cable.
  • the lamp is operated by a lamp circuit 38 to receive power via the bus and connectors 14 and 18 from the computerized device which receives the card.
  • the lamp 36 and circuit 38 and card are integrated with each other as part of the unitary structure with the spectrophotometer 24.
  • a DC power supply 40 which may be a piece of equipment external of the computerized device may be used to provide power for steady illumination, as an alternative from the power coming from the computerized device itself, and being connected to the lamp circuit 38, as via the bus.
  • the lamp 36 need not be energized. If only emissive devices are to be tested, then the lamp 36, the lamp circuit 38 and the dual channel of the fiber 32, 34 need not be used.
  • the optical section 26 may receive light from the optical fiber which is directed to a reflecting diffraction grating 42, which has focusing power.
  • a reflecting diffraction grating 42 which has focusing power.
  • Other gratings and lens arrangements can be adapted to provide spectral dispersion and optical focusing.
  • the light may arrive from the fiber 32 at the corner of a light pipe 44 or be transmitted through a partially transmissive mirror 46.
  • the mirror bends the diffracted light and directs it through an aperture 48, preferably to an optical filter 50 which excludes wavelengths out of the range of interest (for example, the range of interest may be the visible range from about 380 to about 750 microns) to a linear array of photodetectors 52, which may be a CCD (charge coupled device) photodetector array or other linear photodetector array.
  • a linear array of photodetectors 52 which may be a CCD (charge coupled device) photodetector array or other linear photodetector array.
  • Different spectral components are measured by the photodetectors along the array. Since the light is dispersed by the grating and focused across the linear photodetector array, the spectral components at one end of the wavelength band are received by photodetectors at one end of the array while spectral components at the opposite end of the wavelength band are received at the opposite end of the array. It will therefore be apparent that the spectrophotometer system is integrated with the PCMCIA card as
  • the signals from the detector array 52 are applied to an array processor 54.
  • the processor controls the transmission of the signals corresponding to the spectral components from each photodetector of the array in a specified time sequence.
  • the signals are applied via the processor 54 or directly to a microprocessor 56 which may be associated with memory 58.
  • the memory 58 may contain RAM memory for data storage and non-volatile memory which contains the program for operating the microprocessor.
  • a program for digitizing the signals so as to provide high resolution is discussed in U.S. Patent 5,568,143, issued to R.J. Hutchison, et al. on October 22, 1996 may be implemented in the microprocessor under the control of data from the memory 58.
  • a communications interface 57 is connected between the microprocessor and lines L, through L P to the contacts of the connector 18 so as to provide the spectral information to the computerized device having the PCMCIA slot 12.
  • the interface also obtains operating commands from the computerized device and forwards them to the microprocessor to control the gathering of spectral data.
  • FIGS. 4 and 5 there is shown another PCMCIA card 60 where the spectrophotometer and all of the other circuit elements shown on the card and described in connection with FIG. 1 above may be incorporated into an opto-electronic ASIC (application specific integrated circuit) 61.
  • This ASIC is mounted on the card 60 and is indicated as spectrophotometer system 62.
  • Fiber optic connectors 64 and 66 connect a dual channel fiber optic cable 68 to an end thereof which may illuminate and receive signals from the object of interest.
  • the spectrophotometer system 62 may be considered as embedded in the PCMCIA card or ASIC.
  • the circuitry from the multi-element sensor array 70 which is part of the ASIC and also contains the linear array photodetectors provides timed signals via an array processor 72 to an analog to digital (A/D) converter 74.
  • A/D analog to digital
  • the spectral signal to the A/D converter may be successive signals which correspond to successive wavelength increments or components. These signals are converted in the A/D converter 74 and applied to the microprocessor controller 78.
  • the controller also operates the lamp driver circuit 80, either continuously or upon command, to drive the illuminating lamp 82.
  • the microprocessor controller is interfaced with the computerized device utilizing the PCMCIA spectrophotometer by a communications interface circuit 84. All of the circuits 70 through 84 are contained in the ASIC.
  • FIGS. 6 and 7 there is shown another PCMCIA card 90 similar to the card 16.
  • This card also includes a spectrophotometer system ASIC 92, incorporating the detector array, lamp driver, processing electronics and range finder electronics.
  • Fiber optic connectors 94 and 96 provides for transmission of the illumination and spectral signals from and into a fiber optic cable 98 as discussed above.
  • the spectrophotometer card 90 also has a range finder section 100 with transmitting and receiving ultrasonic transducers 102 and 104. These transducers receive a drive signal, for example generally a pulse train 106, from a driver 108 which is turned on and off by a dedicated controller or the microprocessor controller 110.
  • This microprocessor controller is similar to the controller 98 but provides signals for turning on the transducer driver 108 and receiving range signals from a phase discriminator 112.
  • the phase discriminator measures the time difference in terms of the phase relationship of the transmitted or incident pulse train 106 and a reflected pulse train 114, is corresponding to a signal from the input transducer 104.
  • Amplifier 116 increases the amplitude of the reflected signal to an appropriate level for input to the phase discriminator.
  • the microprocessor controller translates the time difference signal into a range signal which is displayed or recorded, and may provide information as to the dimensions of the specimen or object which is being sampled for its spectral constituents, and the dimensions of the environs.
  • the dimensions of the object under test may be obtained and, in the event that the spectrophotometer is used in the decoration of a room with wall covering or paint of desired colors, the size of the room and even the amount of paint can be computed by programs in the microprocessor 56 or its memory 57, or in the host, which may use trigonometric equations; these features being invoked via the host to which the card is connected.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Spectrometry And Color Measurement (AREA)

Abstract

L'invention concerne un système de spectrophotométrie destiné à être inséré sur le côté d'un ordinateur compact ou d'autres dispositifs informatiques, sous la forme d'une carte accessoire assurant l'interface avec l'ordinateur selon les normes de la Personal Computer Memory Card International Association (PCMCIA). Un spectrophotomètre (24) est disposé sur cette carte, et le long d'un bord de celle-ci. L'optique (26) de ce spectrophotomètre est reliée à un câble à fibres optiques (32) dont l'extrémité comporte une ouverture recevant et transmettant la lumière, cette couverture étant exposée à l'objet évalué. La carte peut par ailleurs comporter une lampe (36) couplée aux fibres optiques du spectrophotomètre, de manière à illuminer l'objet évalué. Enfin, cette carte comporte toute l'électronique nécessaire pour les mesures spectrales, y compris un microprocesseur.
PCT/US1999/018963 1998-08-20 1999-08-19 Systeme de spectrophotometrie WO2000014496A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP99943781A EP1025425A4 (fr) 1998-08-20 1999-08-19 Systeme de spectrophotometrie
AU56812/99A AU5681299A (en) 1998-08-20 1999-08-19 Spectrophotometer system
CA002329196A CA2329196A1 (fr) 1998-08-20 1999-08-19 Systeme de spectrophotometrie

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US9731798P 1998-08-20 1998-08-20
US60/097,317 1998-08-20

Publications (1)

Publication Number Publication Date
WO2000014496A1 true WO2000014496A1 (fr) 2000-03-16

Family

ID=22262753

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/018963 WO2000014496A1 (fr) 1998-08-20 1999-08-19 Systeme de spectrophotometrie

Country Status (4)

Country Link
EP (1) EP1025425A4 (fr)
AU (1) AU5681299A (fr)
CA (1) CA2329196A1 (fr)
WO (1) WO2000014496A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10134885B4 (de) * 2001-07-18 2004-02-05 Roche Diagnostics Gmbh Modulares Analysesystem
WO2008149939A1 (fr) 2007-06-08 2008-12-11 Hamamatsu Photonics K.K. Spectroscope

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4758085A (en) * 1985-10-16 1988-07-19 Bertin & Cie Optical fiber spectrometer/colorimeter apparatus
US5757483A (en) * 1997-08-06 1998-05-26 Stellarnet, Inc. Dual beam optical spectrograph
US5792049A (en) * 1996-01-17 1998-08-11 Spectrx, Inc. Spectroscopic system with disposable calibration device
US5818586A (en) * 1994-10-31 1998-10-06 Valtion Teknillinen Tutkimuskeskus Miniaturized fabry-perot spectrometer for optical analysis

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5576529A (en) * 1986-08-08 1996-11-19 Norand Technology Corporation Hand-held optically readable information set reader focus with operation over a range of distances
US5468952A (en) * 1992-05-15 1995-11-21 Symbol Technologies, Inc. Miniature high speed scan element mounted on a personal computer interface card

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4758085A (en) * 1985-10-16 1988-07-19 Bertin & Cie Optical fiber spectrometer/colorimeter apparatus
US5818586A (en) * 1994-10-31 1998-10-06 Valtion Teknillinen Tutkimuskeskus Miniaturized fabry-perot spectrometer for optical analysis
US5792049A (en) * 1996-01-17 1998-08-11 Spectrx, Inc. Spectroscopic system with disposable calibration device
US5757483A (en) * 1997-08-06 1998-05-26 Stellarnet, Inc. Dual beam optical spectrograph

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1025425A4 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10134885B4 (de) * 2001-07-18 2004-02-05 Roche Diagnostics Gmbh Modulares Analysesystem
US6780064B2 (en) 2001-07-18 2004-08-24 Roche Diagnostics Operations, Inc. Modular analytical system having at least two modules connected by a connecting plug
WO2008149939A1 (fr) 2007-06-08 2008-12-11 Hamamatsu Photonics K.K. Spectroscope
EP2063238A1 (fr) * 2007-06-08 2009-05-27 Hamamatsu Photonics K.K. Spectroscope
EP2063238A4 (fr) * 2007-06-08 2014-01-01 Hamamatsu Photonics Kk Spectroscope
KR101491889B1 (ko) * 2007-06-08 2015-02-11 하마마츠 포토닉스 가부시키가이샤 분광기
KR101503079B1 (ko) * 2007-06-08 2015-03-16 하마마츠 포토닉스 가부시키가이샤 분광기

Also Published As

Publication number Publication date
AU5681299A (en) 2000-03-27
EP1025425A1 (fr) 2000-08-09
EP1025425A4 (fr) 2000-11-08
CA2329196A1 (fr) 2000-03-16

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