US4305660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording transmission and emission spectra
Assignee: Farrand Optical Co Inc
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Filing: 1980-06-27
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Granted: 1981-12-15
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Expires: 2000-06-27
Abstract
Abstract A first monochromator includes a diffraction grating that is adapted for occlusion by a mirror. When the mirror occludes the grating, a white light input is transmitted through the first monochromator and through a sample under test, thereby causing a transmission of non-absorbed light from the sample. When the grating is unoccluded, monochromatic light is transmitted from the first monochromator so that a selected bandwidth of fluorescence excitation energy is incident on the sample. Fluorescence emission from the sample is diffracted by a second monochromator which provides diffracted light which is recorded by a vidicon.
Inventors
- 👤 Eli A. Kallet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:25
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/28; G01J3/44; G01J3/4406
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
124 words
Apparatus for providing transmission and fluorescent emission data from a sample comprising: a light source having a first mode of operation in which monochromatic light is directed toward a first side of said sample, and a second mode of operation in which white light is directed toward the first side of said sample; optical means having a first configuration for directing light transmitted from the light source through the sample back toward a second side of the sample, and a second configuration for directing light transmitted from the light source through the sample back to the side of the sample opposite the first side; and detector means for detecting the intensity of light emitted from the side of the sample opposite the second side.
Claim 2
Dependent Claim
124 words
Apparatus for providing transmission and fluorescent emission data from a sample comprising: a light source having a first mode of operation in which monochromatic light is directed toward a first side of said sample, and a second mode of operation in which white light is directed toward the first side of said sample; optical means having a first configuration for directing light transmitted from the light source through the sample back toward a second side of the sample, and a second configuration for directing light transmitted from the light source through the sample back to the side of the sample opposite the first side; and detector means for detecting the intensity of light emitted from the side of the sample opposite the second side.
Claim 3
Dependent Claim
41 words
Apparatus according to claim 1 wherein said light source comprises a monochromator of a type that includes a diffraction grating for causing monochromatic light to be generated, and means for optionally replacing said grating with a mirror to generate white light.
Claim 4
Dependent Claim
26 words
Apparatus according to claim 1 wherein said second side of said sample is positioned at right angles with respect to the first side of the sample.
Claim 5
Dependent Claim
28 words
Apparatus according to claim 1 wherein said detector means includes means for recording the spectrum of light emitted from the side of the sample opposite the second side.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-14 | 1985-06-15 | 1985-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-14 | 1989-06-15 | 1989-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-14 | 1993-06-15 | 1993-12-15 | $7700.00 | Window Closed / Lapsed |