BE781757A - Dispositif pour regler a la meme intensite deux faisceaux lumineux d'unappareil optique a double faisceau - Google Patents
Dispositif pour regler a la meme intensite deux faisceaux lumineux d'unappareil optique a double faisceauInfo
- Publication number
- BE781757A BE781757A BE781757A BE781757A BE781757A BE 781757 A BE781757 A BE 781757A BE 781757 A BE781757 A BE 781757A BE 781757 A BE781757 A BE 781757A BE 781757 A BE781757 A BE 781757A
- Authority
- BE
- Belgium
- Prior art keywords
- adjusting
- light beams
- beam optical
- same intensity
- double beam
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title 1
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
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/37—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using pneumatic detection
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712116849 DE2116849C (de) | 1971-04-06 | Vorrichtung zur Einstellung der beiden Strahlenbünde) eines optischen Zweistrahlgerätes auf gleiche Intensität, vorzugsweise zur Nullpunkteinstellung eines Infrarot-Gasanalysegeräts |
Publications (1)
Publication Number | Publication Date |
---|---|
BE781757A true BE781757A (fr) | 1972-10-06 |
Family
ID=5804051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE781757A BE781757A (fr) | 1971-04-06 | 1972-04-06 | Dispositif pour regler a la meme intensite deux faisceaux lumineux d'unappareil optique a double faisceau |
Country Status (6)
Country | Link |
---|---|
US (1) | US3758786A (fr) |
BE (1) | BE781757A (fr) |
FR (1) | FR2132405B1 (fr) |
GB (1) | GB1348233A (fr) |
IT (1) | IT950955B (fr) |
LU (1) | LU65102A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4125314A (en) * | 1977-05-05 | 1978-11-14 | Dr. Ralph M. Grant Engineering Consultants, Inc. | Beam ratio control for holography |
DE2720636C2 (de) * | 1977-05-07 | 1985-01-03 | Leybold-Heraeus GmbH, 5000 Köln | Pneumatischer Infrarot-Strahlungsdetektor mit einer vakuumdichten Kammer und einem strahlungsdurchlässigen Fenster |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2754424A (en) * | 1953-01-30 | 1956-07-10 | Perkin Elmer Corp | Non-dispersion analyzers |
US3105147A (en) * | 1961-04-03 | 1963-09-24 | Beckman Instruments Inc | Monobeam infrared gas analyzer with means to control the phase difference between the two cells |
-
1972
- 1972-03-31 IT IT22668/72A patent/IT950955B/it active
- 1972-04-04 LU LU65102D patent/LU65102A1/xx unknown
- 1972-04-04 FR FR7211754A patent/FR2132405B1/fr not_active Expired
- 1972-04-06 GB GB1600672A patent/GB1348233A/en not_active Expired
- 1972-04-06 BE BE781757A patent/BE781757A/fr not_active IP Right Cessation
- 1972-04-06 US US00241787A patent/US3758786A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE2116849B2 (de) | 1972-07-06 |
GB1348233A (en) | 1974-03-13 |
US3758786A (en) | 1973-09-11 |
IT950955B (it) | 1973-06-20 |
DE2116849A1 (fr) | 1972-07-06 |
FR2132405A1 (fr) | 1972-11-17 |
FR2132405B1 (fr) | 1976-10-29 |
LU65102A1 (fr) | 1972-07-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Patent lapsed |
Owner name: SIEMENS A.G. Effective date: 19870430 |