GB1337855A - Method and apparatus for measuring transmission of light along a path - Google Patents
Method and apparatus for measuring transmission of light along a pathInfo
- Publication number
- GB1337855A GB1337855A GB1747971A GB1747971A GB1337855A GB 1337855 A GB1337855 A GB 1337855A GB 1747971 A GB1747971 A GB 1747971A GB 1747971 A GB1747971 A GB 1747971A GB 1337855 A GB1337855 A GB 1337855A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulse
- ratio
- pulses
- calculator
- clock
- 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
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
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
-
- 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
- G01N21/86—Investigating moving sheets
Landscapes
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Theoretical Computer Science (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE751570A SE345023B (xx) | 1970-06-01 | 1970-06-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1337855A true GB1337855A (en) | 1973-11-21 |
Family
ID=20271573
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1747971A Expired GB1337855A (en) | 1970-06-01 | 1971-05-27 | Method and apparatus for measuring transmission of light along a path |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2126030C3 (xx) |
GB (1) | GB1337855A (xx) |
SE (1) | SE345023B (xx) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1987006080A2 (en) * | 1986-03-24 | 1987-10-08 | Eastman Kodak Company | Analog/digital converter apparatus for quantizing transmittance voltage signals |
-
1970
- 1970-06-01 SE SE751570A patent/SE345023B/xx unknown
-
1971
- 1971-05-26 DE DE19712126030 patent/DE2126030C3/de not_active Expired
- 1971-05-27 GB GB1747971A patent/GB1337855A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2126030A1 (de) | 1972-07-06 |
DE2126030B2 (de) | 1974-02-07 |
SE345023B (xx) | 1972-05-08 |
DE2126030C3 (de) | 1974-09-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |