FR2079267B3 - - Google Patents
Info
- Publication number
- FR2079267B3 FR2079267B3 FR7103862A FR7103862A FR2079267B3 FR 2079267 B3 FR2079267 B3 FR 2079267B3 FR 7103862 A FR7103862 A FR 7103862A FR 7103862 A FR7103862 A FR 7103862A FR 2079267 B3 FR2079267 B3 FR 2079267B3
- Authority
- FR
- France
- 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
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
- G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
- G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
- G01J1/1626—Arrangements with two photodetectors, the signals of which are compared
Landscapes
- Physics & Mathematics (AREA)
- General 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)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI31970A FI46099C (fi) | 1970-02-05 | 1970-02-05 | Fotometri. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2079267A3 FR2079267A3 (fi) | 1971-11-12 |
| FR2079267B3 true FR2079267B3 (fi) | 1973-10-19 |
Family
ID=8503931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7103862A Expired FR2079267B3 (fi) | 1970-02-05 | 1971-02-05 |
Country Status (6)
| Country | Link |
|---|---|
| CA (1) | CA930191A (fi) |
| DE (1) | DE2105486A1 (fi) |
| FI (1) | FI46099C (fi) |
| FR (1) | FR2079267B3 (fi) |
| GB (1) | GB1304326A (fi) |
| SE (1) | SE359162B (fi) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2195022B1 (fi) * | 1972-08-02 | 1976-01-23 | Cometa Fr | |
| CA1201606A (en) * | 1983-01-27 | 1986-03-11 | Donald L. Kramer | Photometric device |
-
1970
- 1970-02-05 FI FI31970A patent/FI46099C/fi active
-
1971
- 1971-01-29 SE SE113971A patent/SE359162B/xx unknown
- 1971-02-04 CA CA104436A patent/CA930191A/en not_active Expired
- 1971-02-05 DE DE19712105486 patent/DE2105486A1/de active Pending
- 1971-02-05 FR FR7103862A patent/FR2079267B3/fr not_active Expired
- 1971-04-19 GB GB2107071A patent/GB1304326A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FI46099B (fi) | 1972-08-31 |
| CA930191A (en) | 1973-07-17 |
| SE359162B (fi) | 1973-08-20 |
| GB1304326A (fi) | 1973-01-24 |
| FR2079267A3 (fi) | 1971-11-12 |
| DE2105486A1 (de) | 1971-08-26 |
| FI46099C (fi) | 1972-12-11 |