FR2297414A1 - Perfectionnements aux appareils de mesure d'absorption du rayonnement notamment des photometres - Google Patents
Perfectionnements aux appareils de mesure d'absorption du rayonnement notamment des photometresInfo
- Publication number
- FR2297414A1 FR2297414A1 FR7501351A FR7501351A FR2297414A1 FR 2297414 A1 FR2297414 A1 FR 2297414A1 FR 7501351 A FR7501351 A FR 7501351A FR 7501351 A FR7501351 A FR 7501351A FR 2297414 A1 FR2297414 A1 FR 2297414A1
- Authority
- FR
- France
- Prior art keywords
- transistor
- photo
- receiver
- diode
- photoresistance
- 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.)
- Granted
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
- G01N21/251—Colorimeters; Construction thereof
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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7501351A FR2297414A1 (fr) | 1975-01-09 | 1975-01-09 | Perfectionnements aux appareils de mesure d'absorption du rayonnement notamment des photometres |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7501351A FR2297414A1 (fr) | 1975-01-09 | 1975-01-09 | Perfectionnements aux appareils de mesure d'absorption du rayonnement notamment des photometres |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2297414A1 true FR2297414A1 (fr) | 1976-08-06 |
FR2297414B1 FR2297414B1 (enrdf_load_stackoverflow) | 1977-07-15 |
Family
ID=9149916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7501351A Granted FR2297414A1 (fr) | 1975-01-09 | 1975-01-09 | Perfectionnements aux appareils de mesure d'absorption du rayonnement notamment des photometres |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2297414A1 (enrdf_load_stackoverflow) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0186712A1 (en) * | 1984-11-22 | 1986-07-09 | Personal Diagnostics, Inc. | Combined cuvette with integral optical elements and electrical circuit with photoemissive and photosensitive elements in intimate optical contact with said optical elements |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1927339A1 (de) * | 1969-05-29 | 1970-12-03 | Pauschmann Dr Dipl Chem Holm | Flammenionisationsdetektor nach dem Geblaese-Prinzip |
FR2148457A1 (enrdf_load_stackoverflow) * | 1971-08-06 | 1973-03-23 | Metrawatt Gmbh |
-
1975
- 1975-01-09 FR FR7501351A patent/FR2297414A1/fr active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1927339A1 (de) * | 1969-05-29 | 1970-12-03 | Pauschmann Dr Dipl Chem Holm | Flammenionisationsdetektor nach dem Geblaese-Prinzip |
FR2148457A1 (enrdf_load_stackoverflow) * | 1971-08-06 | 1973-03-23 | Metrawatt Gmbh |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0186712A1 (en) * | 1984-11-22 | 1986-07-09 | Personal Diagnostics, Inc. | Combined cuvette with integral optical elements and electrical circuit with photoemissive and photosensitive elements in intimate optical contact with said optical elements |
Also Published As
Publication number | Publication date |
---|---|
FR2297414B1 (enrdf_load_stackoverflow) | 1977-07-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |