GB648023A - Improvements in and relating to meters for the measurement of radiation in the spectral region of tubular lamps - Google Patents
Improvements in and relating to meters for the measurement of radiation in the spectral region of tubular lampsInfo
- Publication number
- GB648023A GB648023A GB2896748A GB2896748A GB648023A GB 648023 A GB648023 A GB 648023A GB 2896748 A GB2896748 A GB 2896748A GB 2896748 A GB2896748 A GB 2896748A GB 648023 A GB648023 A GB 648023A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ultra
- violet
- photo
- meter
- cells
- 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
- 230000005855 radiation Effects 0.000 title abstract 2
- 230000003595 spectral effect Effects 0.000 title abstract 2
- 238000005259 measurement Methods 0.000 title 1
- 239000010453 quartz Substances 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 239000011572 manganese Substances 0.000 abstract 1
- -1 manganese activated zinc silicate Chemical class 0.000 abstract 1
- 238000001228 spectrum Methods 0.000 abstract 1
Classifications
-
- 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)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
648,023. Photo-electric photometer. BRITISH THOMSON-HOUSTON CO., Ltd. (General Electric Co.). Nov. 8, 1948, No. 28967. [Class 40 (iii)] A meter for measuring the output of a lamp in a particular spectral region, e.g. ultra-violet light of wavelength 2537 Angstroms, comprises two photo-cells connected in opposition, both cells being equally responsive to the spectrum outside the selected region and one only being responsive to that region. As shown, the meter has the bottom of its housing 3 so formed as to sit astride the lamp, two photo-cells 9 and 10 being mounted in a recess in the housing and connected in series, with a microammeter 17 connected across their junction. Cell 9 is covered with a quartz plate transmitting ultra-violet and cell 10 with a glass plate which does not, both plates being backed with a suitable phosphor layer such as manganese activated zinc silicate which fluoresces under ultra-violet radiation. The effect of visible light is thus cancelled out while, since only the backing on the quartz plate fluoresces, the microammeter gives a direct indication of the ultra-violet content of the light. A resistor may be provided in shunt with the meter for calibration purposes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2896748A GB648023A (en) | 1948-11-08 | 1948-11-08 | Improvements in and relating to meters for the measurement of radiation in the spectral region of tubular lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2896748A GB648023A (en) | 1948-11-08 | 1948-11-08 | Improvements in and relating to meters for the measurement of radiation in the spectral region of tubular lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB648023A true GB648023A (en) | 1950-12-28 |
Family
ID=10284100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2896748A Expired GB648023A (en) | 1948-11-08 | 1948-11-08 | Improvements in and relating to meters for the measurement of radiation in the spectral region of tubular lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB648023A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2136112A (en) * | 1983-02-23 | 1984-09-12 | Hanovia Ltd | Apparatus for monitoring the intensity of a uv source |
| EP0202891A2 (en) * | 1985-05-24 | 1986-11-26 | W.M. STILL & SONS LIMITED | Water purifier with detector |
-
1948
- 1948-11-08 GB GB2896748A patent/GB648023A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2136112A (en) * | 1983-02-23 | 1984-09-12 | Hanovia Ltd | Apparatus for monitoring the intensity of a uv source |
| US4629896A (en) * | 1983-02-23 | 1986-12-16 | Hanovia Limited | Apparatus for monitoring the intensity of a UV source |
| EP0202891A2 (en) * | 1985-05-24 | 1986-11-26 | W.M. STILL & SONS LIMITED | Water purifier with detector |
| GB2175688A (en) * | 1985-05-24 | 1986-12-03 | Still & Sons Ltd W M | Water purifier with u v detector |
| EP0202891A3 (en) * | 1985-05-24 | 1988-08-03 | W.M. STILL & SONS LIMITED | Water purifier with detector |
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