GB2273770B - Method and apparatus for examining a gemstone - Google Patents
Method and apparatus for examining a gemstoneInfo
- Publication number
- GB2273770B GB2273770B GB9325534A GB9325534A GB2273770B GB 2273770 B GB2273770 B GB 2273770B GB 9325534 A GB9325534 A GB 9325534A GB 9325534 A GB9325534 A GB 9325534A GB 2273770 B GB2273770 B GB 2273770B
- Authority
- GB
- United Kingdom
- Prior art keywords
- gemstone
- examining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/87—Investigating jewels
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9325534A GB2273770B (en) | 1990-04-24 | 1993-12-14 | Method and apparatus for examining a gemstone |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB909009132A GB9009132D0 (en) | 1990-04-24 | 1990-04-24 | Method and apparatus for examining an object |
GB9108733A GB2244329B (en) | 1990-04-24 | 1991-04-24 | Method and apparatus for examining an object |
GB9325534A GB2273770B (en) | 1990-04-24 | 1993-12-14 | Method and apparatus for examining a gemstone |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9325534D0 GB9325534D0 (en) | 1994-02-16 |
GB2273770A GB2273770A (en) | 1994-06-29 |
GB2273770B true GB2273770B (en) | 1994-10-26 |
Family
ID=27265057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9325534A Expired - Fee Related GB2273770B (en) | 1990-04-24 | 1993-12-14 | Method and apparatus for examining a gemstone |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2273770B (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990007108A1 (en) * | 1988-12-22 | 1990-06-28 | Renishaw Plc | Raman analysis apparatus |
GB2256923A (en) * | 1990-02-02 | 1992-12-23 | De La Rue Thomas & Co Ltd | Detection apparatus |
-
1993
- 1993-12-14 GB GB9325534A patent/GB2273770B/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990007108A1 (en) * | 1988-12-22 | 1990-06-28 | Renishaw Plc | Raman analysis apparatus |
GB2256923A (en) * | 1990-02-02 | 1992-12-23 | De La Rue Thomas & Co Ltd | Detection apparatus |
Also Published As
Publication number | Publication date |
---|---|
GB9325534D0 (en) | 1994-02-16 |
GB2273770A (en) | 1994-06-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20040424 |