Patent US4669873A successfully refreshed from Google Patents.
US4669873A
Expired / Lapsed
US
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Spectrophotometer
Assignee: Balzers und Leybold Deutschland Holding AG
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Filing: 1985-02-21
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Granted: 1987-06-02
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Expires: 2005-02-21
Abstract
Abstract A spectrophotometer obtains transmitted, reflected, or radiated light from at least two measuring points on at least one object and a spectroscopic light disperser disperses the obtained light spectroscopically to measuring cells for electrically indicating the spectrum of the obtained light, whereby the spectrum may be analyzed for indicating optical properties of the object at the measuring point from which the light was obtained. At least one fibre-glass cable respectively carries the light obtained at each measuring point to the spectroscopic light disperser. The ends of the fibres of each cable at the spectroscopic light dispersion are arranged in a row and the row of fibre ends of each cable are parallel to each other in a matrix of fibre ends. At least one light stop allows light from only one fibre-glass cable at a time to carry the light to the spectroscopic light disperser.
Inventors
- 👤 Peter Wirz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:47
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/255; G01N2021/1734; G01N21/84; G01N21/8422; G01N2021/8427; G01N2201/00; G01N2201/08
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
185 words
In a spectrophotometer having means for obtaining transmitted, reflected, or radiated light from at least two measuring points on at least one object, the improvement comprising: a spectroscopic light dispersion means for dispersing obtained light spectroscopically; a photo-receiver unit having measuring cells for electrically indicating the spectrum of the obtained, dispersed light; at least two fibre-glass cables for respectively carrying light obtained at least at two measuring points to the spectroscopic light dispersion means as the obtained light, ends of the fibres of each cable at the spectroscopic light dispersion means being arranged in a row and the row of fibre ends of each cable being parallel to each other in a matrix of fibre ends; at least one light stop means for allowing only one fibre-glass cable at a time to provide the obtained light to the spectroscopic light dispersion means; and means for electronically correlating the measuring cells of the photo-receiver unit with each row of the ends of the fibres in the matrix; whereby the spectrum may be analyzed for indicating optical properties of the object from which the light was obtained.
Claim 2
Dependent Claim
185 words
In a spectrophotometer having means for obtaining transmitted, reflected, or radiated light from at least two measuring points on at least one object, the improvement comprising: a spectroscopic light dispersion means for dispersing obtained light spectroscopically; a photo-receiver unit having measuring cells for electrically indicating the spectrum of the obtained, dispersed light; at least two fibre-glass cables for respectively carrying light obtained at least at two measuring points to the spectroscopic light dispersion means as the obtained light, ends of the fibres of each cable at the spectroscopic light dispersion means being arranged in a row and the row of fibre ends of each cable being parallel to each other in a matrix of fibre ends; at least one light stop means for allowing only one fibre-glass cable at a time to provide the obtained light to the spectroscopic light dispersion means; and means for electronically correlating the measuring cells of the photo-receiver unit with each row of the ends of the fibres in the matrix; whereby the spectrum may be analyzed for indicating optical properties of the object from which the light was obtained.
Claim 3
Dependent Claim
25 words
The spectrophotometer according to claim 1, and further comprising: a second fibre-glass cable associated respectively with each measuring point for providing the light obtained therefrom.
Claim 4
Dependent Claim
59 words
The spectrophotometer according to claim 2, wherein the light stop means comprises one light source communicating with more than one of the second fibre-glass cables and a light stop between the light source and the light-inlet ends of the second fibre-glass cables and uncovering only one of the second fibre-glass cables at a time for entry of light thereinto.
Claim 5
Dependent Claim
38 words
The spectrophotometer according to claim 2, wherein the light stop means comprises a slot movable over the fibre-end matrix for uncovering and passing light from only one row thereof at a time to the spectroscopic light dispersion means.
Claim 6
Dependent Claim
22 words
The spectrophotometer according to claim 3, and further comprising a substantially-monochromatic light source for at least one of the second fibre-glass cables.
Claim 7
Dependent Claim
22 words
The spectrophotometer according to claim 4, and further comprising a substantially-monochromatic light source for at least one of the second fibre-glass cables.
Claim 8
Dependent Claim
30 words
The spectrophotometer according to claim 1, and further comprising means responsive to the electrical indication of the spectrum by the spectroscopic light dispersion means for actuating the light stop means.
Claim 9
Dependent Claim
30 words
The spectrophotometer according to claim 2, and further comprising means responsive to the electrical indication of the spectrum by the spectroscopic light dispersion means for actuating the light stop means.
Claim 10
Dependent Claim
30 words
The spectrophotometer according to claim 3, and further comprising means responsive to the electrical indication of the spectrum by the spectroscopic light dispersion means for actuating the light stop means.
Claim 11
Dependent Claim
30 words
The spectrophotometer according to claim 4, and further comprising means responsive to the electrical indication of the spectrum by the spectroscopic light dispersion means for actuating the light stop means.
Claim 12
Dependent Claim
30 words
The spectrophotometer according to claim 5, and further comprising means responsive to the electrical indication of the spectrum by the spectroscopic light dispersion means for actuating the light stop means.
Claim 13
Dependent Claim
30 words
The spectrophotometer according to claim 6, and further comprising means responsive to the electrical indication of the spectrum by the spectroscopic light dispersion means for actuating the light stop means.
References Cited (Backward Citations)
GB2064113A
Cited
JPS56119822A
Cited
JPS56168145A
Cited
JPS5773632A
Cited
JPS57131007A
Cited
US4566792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-01 | 1990-12-01 | 1991-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-01 | 1994-12-01 | 1995-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-01 | 1998-12-01 | 1999-06-02 | $7700.00 | Window Closed / Lapsed |