US5206708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the simultaneous detection of ranges of wavelengths
Assignee: Individual
•
Filing: 1990-12-21
•
Granted: 1993-04-27
•
Expires: 2010-12-21
Abstract
Abstract An apparatus for the simultaneous detection of several ranges of wavelengths of polychromatic light radiation, using one detector for each detected range of wavelengths, includes an interference filter which filters the range of wavelengths to be detected out of the polychromatic light beam, and optical elements for guiding the polychromatic light beam to be detected. The optical elements include a first system of mirrors in the path of the incident polychromatic light beam for collimating it in a hollow-cylindrical manner, one mirror of the first system of mirrors being located at the center of the collimated light beam. The optical elements further include a second system of mirrors in the hollow-cylindrically collimated light beam that deflects this light essentially perpendicularly to the conceptual surface of the hollow cylinder and radially to the longitudinal axis of thereof. Photo-detectors associated with the particular deflection mirrors are mounted opposite the second system of mirrors to receive the deflected light. A common interference filter is mounted in the path of the beam between the deflecting mirrors and the photo-detectors, the deflecting mirrors and the associated photo-detectors being pivotable about the interference filter.
Inventors
- 👤 Gunter Knapp
- 👤 Bernhard Platzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:23
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/28; G01J3/30; G01J3/36; G01J3/12; G01J3/26; G01J2003/1226; G01J2003/265
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
233 words
Apparatus for the simultaneous detection of several ranges of wavelengths of polychromatic light radiation, comprising: optical guidance means for guiding an incident polychromatic light beam, said optical guidance means comprising: means including a first system of mirrors located in the path of the incident polychromatic light beam for collimating said polychromatic light beam into a hollow-cylindrically collimated light beam, wherein one mirror of the first system of mirrors is mounted at the center of the collimated light beam, and means including a second system of mirrors, said second system including a plurality of deflecting mirrors located in the path of the hollow-cylindrically collimated light beam, for deflecting the collimated light beam essentially perpendicularly in respect to a conceptual outer surface of a hollow cylinder defined by the collimated light beam and radially in respect to the longitudinal axis of the hollow cylinder; a photo-detector for each range of wavelength to be detected, said photo-detectors being mounted opposite the deflecting mirrors; and a common interference filter which filters the ranges of wavelengths to be detected out of the polychromatic light beam, said common interference filter being mounted in a path of the collimated light beam between the deflecting mirrors and the photo-detectors, the deflecting mirrors and the associated photo-detectors being pivotal about the interference filter; said filtered ranges of wavelengths depending on the orientation of the deflecting mirrors in relation to the interference filter.
Claim 2
Dependent Claim
233 words
Apparatus for the simultaneous detection of several ranges of wavelengths of polychromatic light radiation, comprising: optical guidance means for guiding an incident polychromatic light beam, said optical guidance means comprising: means including a first system of mirrors located in the path of the incident polychromatic light beam for collimating said polychromatic light beam into a hollow-cylindrically collimated light beam, wherein one mirror of the first system of mirrors is mounted at the center of the collimated light beam, and means including a second system of mirrors, said second system including a plurality of deflecting mirrors located in the path of the hollow-cylindrically collimated light beam, for deflecting the collimated light beam essentially perpendicularly in respect to a conceptual outer surface of a hollow cylinder defined by the collimated light beam and radially in respect to the longitudinal axis of the hollow cylinder; a photo-detector for each range of wavelength to be detected, said photo-detectors being mounted opposite the deflecting mirrors; and a common interference filter which filters the ranges of wavelengths to be detected out of the polychromatic light beam, said common interference filter being mounted in a path of the collimated light beam between the deflecting mirrors and the photo-detectors, the deflecting mirrors and the associated photo-detectors being pivotal about the interference filter; said filtered ranges of wavelengths depending on the orientation of the deflecting mirrors in relation to the interference filter.
Claim 3
Dependent Claim
33 words
An apparatus as claimed in claim 1, wherein the deflecting mirros and photo-detectors are pivotably affixed to a wall of a hollow-cylindrical filter holder at the center of which is the interference filter.
Claim 4
Dependent Claim
36 words
An apparatus as claimed in claim 1, wherein the interference filter is located essentially in a shadow of the mirror of the first system of mirrors mounted at the center of the hollow-cylindrically collimated light beam.
Claim 5
Dependent Claim
69 words
An apparatus as claimed in claim 1, wherein the first system of mirrors compries: means including a concave mirror with a central aperture for receiving the incident polychromatic light beam, means including a plane mirror located opposite the central aperture for reflecting the incident polychromatic light beam toward the concave mirror, and means for guding the collimated light beam past the plane mirror toward the second system of mirrors.
Claim 6
Dependent Claim
34 words
An apparatus as claimed in claim 4, wherein the plane mirror comprises a circular cross-section and wherein an outside diameter of the plane mirror essentially matches an inside diameter of the collimated light beam.
Claim 7
Dependent Claim
20 words
An apparatus as claimed in claim 5, wherein the deflecting mirrors are axially offset relative to the common interference filter.
Claim 8
Dependent Claim
32 words
An apparatus as claimed in claim 6, wherein each deflecting mirror and each associated photo-detector is mounted on a support plate rotatable about a longitudinal axis of the hollow-cylindrically collimated light beam.
Claim 9
Dependent Claim
41 words
An apparatus as claimed in claim 7, wherein the support plate comprises an essentially central circular clearance having a diameter which essentially corresponds to an outside diameter of a filter holder to which the support plates are affixed in rotatable manner.
Claim 10
Dependent Claim
65 words
An apparatus as claimed in claim 2, wherein nearly circumferential slots are present in the wall of the filter holder and are opposite light entry and exit surfaces of the interference filter, the slots opposite the light entry surfaces forming a guidance means for the deflecting mirrors and the slots opposite the exit surfaces forming passages for pencils of light issuing from the interference filter.
Claim 11
Dependent Claim
44 words
An apparatus as claimed in claim 1, wherein at least two interference filters are superposed at the center of the hollow-cylindrical collimated light beam, the interference filters being relatively rotatable about a common axis corresponding to an axis of the hollow-cylindrically collimated light beam.
Claim 12
Dependent Claim
39 words
An apparatus as claimed in claim 10, wherein each interference filter is located at a center of its own, coaxial, hollow-cylindrical filter holder, each holder having a wall to which the deflecting mirrors and associated detectors are pivotably affixed.
Claim 13
Dependent Claim
46 words
An apparatus as claimed in claim 1, whreein specular surfaces of the deflecting mirrors are formed each time by a slanted surface of a parallelipipedic prism of which the base surface essentially subtends a right angle to a longitudinal axis of the hollow-cylindrically collimated light beam.
Claim 14
Dependent Claim
28 words
An apparatus as claimed in claim 1, wherein the deflecting mirrors are radially displaceable in a plane perpendicular to a longitudinal axis of the hollow-cylindrically collimated light beam.
Claim 15
Dependent Claim
23 words
An apparatus as claimed in claim 1, wherein the interference filter is rotatably mounted about an axis of the hollow-cylindrically collimated light beam.
Claim 16
Dependent Claim
25 words
An apparatus as claimed in claim 1, wherein an interference filter support plate is rotatably mounted about an axis of the hollow-cylindrically collimated light beam.
Claim 17
Dependent Claim
36 words
An apparatus as claimed in claim 1, wherein pencils of light issuing from the interference filter are matched by means of optics in front of the photo-detectors to the particular size of the active detector surface.
References Cited (Backward Citations)
US3877818A
Cited
DD127779A1
Cited
DE2731775A1
Cited
US4329062A
Cited
US4645342A
Cited
DE3623345A1
Cited
GB2215038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-26 | 1996-10-26 | 1997-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-26 | 2000-10-26 | 2001-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-26 | 2004-10-26 | 2005-04-27 | $7700.00 | Window Closed / Lapsed |