Patent US3302207A successfully refreshed from Google Patents.
US5164586A
Expired / Lapsed
US
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Arrangement for measuring the absorption of transparent specimens mounted within an integrating sphere
Assignee: Carl Zeiss AG
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Filing: 1991-05-22
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Granted: 1992-11-17
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Expires: 2011-05-22
Abstract
Abstract The invention is directed to an arrangement for measuring the absorption of a transparent specimen. The arrangement includes: a radiation source for supplying radiation; a radiation-integrating device defining a space enclosed by a wall having a reflective surface for multiply reflecting the radiation substantially uniformly throughout the space to diffusely illuminate the transparent specimen whereby diffused radiation passes through the transparent specimen; a photometric measuring unit for measuring the radiation passed through the specimen; and, a mount for mounting the specimen between the reflective surface and the measuring unit. The arrangement of the invention enables the absorption of transparent specimens to be measured which have unfavorable outer forms such as where the specimen contains no surfaces which are mutually parallel.
Inventors
- 👤 Gerhard Hohberg
- 👤 Axel Matthes
- 👤 Harry Schlemmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:02
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/59; G01N21/84; G01N21/87; G01N2201/00; G01N2201/06; G01N2201/061; G01N2201/06126; G01N2201/065
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
96 words
Arrangement for measuring the absorption of a transparent specimen, the arrangement comprising: a radiation source for supplying broad band light radiation; a radiation-integrating device defining a space enclosed by a wall having a reflective surface for multiply reflecting said radiation substantially uniformly throughout said space to diffusely illuminate the transparent specimen exclusively by diffusely reflected radiation whereby diffused radiation passes through the transparent specimen; a diode array spectrometer for measuring the radiation passed through the specimen; and, mounting means for mounting the specimen within said space and between said reflective surface and said diode array spectrometer.
Claim 2
Dependent Claim
96 words
Arrangement for measuring the absorption of a transparent specimen, the arrangement comprising: a radiation source for supplying broad band light radiation; a radiation-integrating device defining a space enclosed by a wall having a reflective surface for multiply reflecting said radiation substantially uniformly throughout said space to diffusely illuminate the transparent specimen exclusively by diffusely reflected radiation whereby diffused radiation passes through the transparent specimen; a diode array spectrometer for measuring the radiation passed through the specimen; and, mounting means for mounting the specimen within said space and between said reflective surface and said diode array spectrometer.
Claim 3
Dependent Claim
40 words
The arrangement of claim 1, the specimen having a smooth face and said mounting means defining a surface for holding the specimen so as to cause the smooth face of said specimen to be directed toward said diode array spectrometer.
Claim 4
Dependent Claim
21 words
The arrangement of claim 1, said mounting means being a glass plate defining a supporting surface for supporting the specimen thereon.
Claim 5
Dependent Claim
43 words
The arrangement of claim 3, wherein said measuring means measures the radiation passed through the specimen in a predetermined spectral range, the arrangement further comprising a liquid interposed between the specimen and said glass plate, said liquid being nonabsorptive in said spectral range.
Claim 6
Dependent Claim
31 words
The arrangement of claim 1, further comprising a light conductor disposed between the specimen and said diode array spectrometer for conducting the radiation form the specimen to said diode array spectrometer.
Claim 7
Dependent Claim
20 words
The arrangement of claim 1, including a photometric measuring reference unit for measuring the radiation reflected from the reflective surface.
Claim 8
Dependent Claim
13 words
The arrangement of claim 1, said radiation source being mounted within said space.
Claim 9
Dependent Claim
12 words
The arrangement of claim 1, said radiation source being a flash lamp.
Claim 10
Dependent Claim
36 words
The arrangement of claim 1, said radiation source being disposed outside of said device; and, said arrangement further comprising optical means interposed between said device and said radiation source for transmitting said radiation into said space.
Claim 11
Dependent Claim
30 words
The arrangement of claim 1, said mounting means being a glass plate having a supporting surface for supporting the specimen; and, said supporting surface being configured as a diffusing screen.
Claim 12
Dependent Claim
12 words
The arrangement of claim 1, said radiation-integrating device being an Ulbricht sphere.
Claim 13
Dependent Claim
13 words
The arrangement of claim 1, said radiation-integrating device being of generally cylindrical shape.
Claim 14
Dependent Claim
93 words
The arrangement of claim 1, said wall having an opening formed therein to permit the diffused radiation to pass out of said space; and, said arrangement further comprising a cylindrically-shaped tube having an inner wall reflective surface defining an interior space; said tube defining seating means for receiving said device thereon so as to cause said opening to communicate with said interior space of said tube; and, said mounting means being disposed with respect to the tube so as to cause said specimen to be disposed within said interior space of said tube.
Claim 15
Dependent Claim
11 words
The arrangement of claim 1, said specimen being a precious stone.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-17 | 1996-05-18 | 1996-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-17 | 2000-05-18 | 2000-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-17 | 2004-05-18 | 2004-11-17 | $7700.00 | Window Closed / Lapsed |