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公开(公告)号：CA1330494C
公开(公告)日：1994-07-05
申请号：CA613832
申请日：1989-09-28
Applicant: MILES INC
Inventor： DOSMANN ANDREW J
Abstract: An optical transmission spectrometer for transmission measurements of absorbing and scattering samples includes light sources mounted parallel to each other in a holder. The beams of light eminating from the light sources are directed through a beam-combiner. The beam-combiner includes a first refractive surface at an angle of incidence of 45.degree.. The first refractive surface refracts light toward a common axis. The beam-combiner includes a second refractive surface parallel to the first refractive surface for refracting the beam of light along a common axis parallel to the original direction of the beam of light. The beam-combiner can include additional refractive surface for other beams of light to combine the beams of light into a primary beam. The includes a collimating tube extending along the common axis for baffling stray light and directing the primary beam through a sample. A second collimating tube is provided on the side of the sample opposite the first collimating tube for baffling stray light passing through the sample. The second collimating tube directs the primary beam to a detector package mounted in a holder, where the detector viewing area of the sample is limited to that of the primary beam.
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公开(公告)号：CA2100735A1
公开(公告)日：1994-02-08
申请号：CA2100735
申请日：1993-07-16
Applicant: MILES INC
Inventor： DETWILER PAUL S , DOSMANN ANDREW J
Abstract: A dual function readhead for a reflectance instrument is located in a housing for the instrument. A first light source for emitting radiation for reflectance readings and transmitting data is mounted in the readhead. In addition, a first photodetector is mounted in the readhead for detecting or receiving reflectance readings. A format or interface access port is defined in the readhead. An interface is provided that includes a second photodetector for detecting data transmitted by the first light source. Means are also provided for decoding data received by the second photodetector. A second light source may also be included with the interface for transmitting commands or data to the first photodetector. Software for controlling the operation of the first light source and the first photodetector is also provided.
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公开(公告)号：CA2081680A1
公开(公告)日：1993-05-01
申请号：CA2081680
申请日：1992-10-29
Applicant: MILES INC
Inventor： DOSMANN ANDREW J
Abstract: A dual beam spectrometer for conducting both turbidimetric and colormetric measurements includes a housing with a light source. The housing further includes source exit apertures that form light from the light source into a sample light beam and reference light beam. A sample cartridge for containing sample material to be measured is mounted in the housing in the path of the sample light beam. The spectrometer also includes a detector assembly for detecting the sample light beam and the reference light beam. The detector assembly includes a first detector that senses or detects sample light beam and a second detector that senses or detects the reference light beam. A sample light beam detection aperture tube is positioned in the housing between the sample cartridge and the first detector. Similarly, a reference light beam detection aperture tube is positioned between the sample cartridge and the second detector.
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公开(公告)号：AU647317B2
公开(公告)日：1994-03-17
申请号：AU2708992
申请日：1992-10-16
Applicant: MILES INC
Inventor： DOSMANN ANDREW J
Abstract: A dual beam spectrometer for conducting both turbidimetric and colormetric measurements includes a housing with a light source. The housing further includes source exit apertures that form light from the light source into a sample light beam and reference light beam. A sample cartridge for containing sample material to be measured is mounted in the housing in the path of the sample light beam. The spectrometer also includes a detector assembly for detecting the sample light beam and the reference light beam. The detector assembly includes a first detector that senses or detects sample light beam and a second detector that senses or detects the reference light beam. A sample light beam detection aperture tube is positioned in the housing between the sample cartridge and the first detector. Similarly, a reference light beam detection aperture tube is positioned between the sample cartridge and the second detector.
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Patent Agency Ranking
公开(公告)号：CA2146681A1
公开(公告)日：1995-12-31
申请号：CA2146681
申请日：1995-04-10
Applicant: MILES INC
Inventor： DOSMANN ANDREW J
Abstract: The high spatial resolution area array detection readhead and method for using the same involve modifying an existing area array detection readhead to provide improved spatial resolution within the sample detection area. One modification involves reducing the field of view of the area array detection readhead. The reduction in the field of view increases pixel spatial resolution because the same number of pixels in the area array detector cover a smaller area. This reduction can be achieved by changing the magnification of the lens of the area array detection readhead or by moving the sample detection area closer to the area array detection readhead. The next modification involves properly aligning the reduced field of view within the sample detection area to take advantage of the improved pixel resolution. Preferably, by rotating the typical area array detection readhead 90 degrees with respect to the sample detection area, the length of the reduced field of view aligns with the width of the sample detection area. Finally, an optical wedge is positioned between the area array detection readhead and the sample detection area. The optical wedge is designed to shift the reduced field of view a predetermined number, X, of degrees from normal along the length of the sample detection area to cover a first field of the sample detection area. By inverting the optical wedge or introducing another optical wedge, the field of view is shifted -X degrees from normal and fills the remaining field of the sample detection area. As such, the sample detection area is divided into two fields that cover the entire sample detection area. Accordingly, by switching the optical wedge between the two wedge positions, the improved area array detection readhead shifts the reduced field of view + and - X degrees to image the entire sample detection area at the higher spatial resolution.
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公开(公告)号：AU4422093A
公开(公告)日：1994-04-14
申请号：AU4422093
申请日：1993-07-27
Applicant: MILES INC
Inventor： DETWILER PAUL STEVEN , DOSMANN ANDREW J
Abstract: The read head has an instrument housing and a light source (14) in the read head for emitting radiation for reflectance readings and transmitting data. An interface (12) includes a photodetector (28) for detecting the data transmitted by the light source, and the data received by the photodetector is decoded (22). The read head includes an access slot (18) adjacent the light source and a photodetector (20), and the interface fits into the access slot. A conductor (34) connects the interface to the decoder (16). The light source (14) may be an 840 nm (IR) LED that is modulated by a microprocessor (16) under software control.
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公开(公告)号：AU653105B2
公开(公告)日：1994-09-15
申请号：AU4422093
申请日：1993-07-27
Applicant: MILES INC
Inventor： DETWILER PAUL STEVEN , DOSMANN ANDREW J
Abstract: The read head has an instrument housing and a light source (14) in the read head for emitting radiation for reflectance readings and transmitting data. An interface (12) includes a photodetector (28) for detecting the data transmitted by the light source, and the data received by the photodetector is decoded (22). The read head includes an access slot (18) adjacent the light source and a photodetector (20), and the interface fits into the access slot. A conductor (34) connects the interface to the decoder (16). The light source (14) may be an 840 nm (IR) LED that is modulated by a microprocessor (16) under software control.
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公开(公告)号：CA2146845A1
公开(公告)日：1995-12-31
申请号：CA2146845
申请日：1995-04-11
Applicant: MILES INC
Inventor： DOSMANN ANDREW J
Abstract: A photometer readhead is used to measure concentrations within a test sample of preselected color-developed analytes having different characteristic absorption bands. The photometer readhead comprises an artificial light source for illuminating the test sample, a plurality of light-emitting diodes for detecting light transmitted through or reflected from the test sample, and a housing assembly for enclosing and supporting the plurality of light-emitting diodes. The plurality of light transmitted diodes have spectral responses encompassing respective ones of the different characteristic absorption bands of the preselected color-developed analytes. Theplurality of light-emitting diodes preferably include a first light-emitting diode having a spectral response in the red portion of the visible light spectrum, a second light-emitting diode having a spectral response in the blue portion of the visible light spectrum, a third light-emitting diode having a spectral response in the green portion of the visible light spectrum, and a fourth light-emitting diode having a spectral response in the infrared light spectrum.
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