Patent US3950102A successfully refreshed from Google Patents.
US3950102A
Expired / Lapsed
US
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Analysis lamp, particularly for the examination of precious stones
Assignee: Individual
•
Filing: 1975-02-21
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Granted: 1976-04-13
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Expires: 1995-02-21
Abstract
Abstract An analysis lamp, particularly for the examination of precious stones, with at least one daylight source and at least one UV light source, the observation planes for the light emitted by the daylight source and by the UV source being spatially separated from one another.
Inventors
- 👤 Manfred Eickhorst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:43
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/63; G01N21/64; G01N21/6447; G01N21/84; G01N21/87
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
101 words
An analysis lamp, particularly for the examination of precious stones, with at least one artificial daylight source and at least one artificial UV light source, wherein the improvement comprises: means for establishing an observation plane for the light emitted by the daylight source and an observation plane for the light emitted by the UV source that is spatially separated from the daylight observation plane so that a stone may be viewed in the daylight observation plane without interference from the UV light source and viewed in the UV observation plane without interference by the daylight source with both sources emitting light.
Claim 2
Dependent Claim
101 words
An analysis lamp, particularly for the examination of precious stones, with at least one artificial daylight source and at least one artificial UV light source, wherein the improvement comprises: means for establishing an observation plane for the light emitted by the daylight source and an observation plane for the light emitted by the UV source that is spatially separated from the daylight observation plane so that a stone may be viewed in the daylight observation plane without interference from the UV light source and viewed in the UV observation plane without interference by the daylight source with both sources emitting light.
Claim 3
Dependent Claim
30 words
The analysis lamp according to claim 1, including a common housing having partition means separating said daylight source and said UV light source to optically isolate them from each other.
Claim 4
Dependent Claim
52 words
The analysis lamp according to claim 2, wherein said housing has means, including said partition means, for establishing a directional beam of light from said UV light source and a directional beam of light from said daylight source, with the direction of orientation for said beams being approximately 180° from each other.
Claim 5
Dependent Claim
50 words
The analysis lamp according to claim 3, wherein the direction for the UV light source beam is generally vertically upward, and said housing includes a UV suppression filter means in the path of said UV light beam for permitting the passage of UV light of only one predetermined examination wavelength.
Claim 6
Dependent Claim
44 words
The analysis lamp according to claim 4, wherein said filter means provides an upwardly facing substantially horizontal surface on which a stone to be examined may be placed and viewed outside of said housing in an observation plane perpendicular to the UV light beam.
Claim 7
Dependent Claim
42 words
The analysis lamp of claim 1, having housing means, including said partition means for directionally establishing a light beam from said daylight source and a light beam from said UV source that is oriented substantially 180° with respect to the daylight beam.
Claim 8
Independent Claim
113 words
A method of examining valuable stones, comprising the steps of: providing two separate beams of artificial daylight and artificial UV light that are oriented with respect to each other at a substantial angle; placing the stone to be examined in the UV light beam spatially removed from the daylight light beam and observing the thus illuminated stone within an observation plane substantially perpendicular to the UV light beam while the daylight beam is present; placing the stone to be examined in the daylight beam spatially removed from the UV light beam and observing the thus illuminated stone in an observation plane substantially perpendicular to the daylight beam, while said UV beam is present.
Claim 9
Independent Claim
113 words
A method of examining valuable stones, comprising the steps of: providing two separate beams of artificial daylight and artificial UV light that are oriented with respect to each other at a substantial angle; placing the stone to be examined in the UV light beam spatially removed from the daylight light beam and observing the thus illuminated stone within an observation plane substantially perpendicular to the UV light beam while the daylight beam is present; placing the stone to be examined in the daylight beam spatially removed from the UV light beam and observing the thus illuminated stone in an observation plane substantially perpendicular to the daylight beam, while said UV beam is present.
Claim 10
Dependent Claim
20 words
The method according to claim 7, wherein said light beams are oriented with respect to each other at substantially 180°.
Claim 11
Dependent Claim
68 words
The method of claim 8, wherein said UV beam is directed substantially vertically upward; and further including the step of filtering the UV beam with a UV suppression filter to pass only a single wavelength to the stone to be examined, and supporting the stone to be examined in the UV beam on the filter to be supported solely by the filter during examination with a UV beam.
References Cited (Backward Citations)
US2104079A
Cited
US3431409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |