GB1514507A - Photometric measuring apparatus - Google Patents
Photometric measuring apparatusInfo
- Publication number
- GB1514507A GB1514507A GB3447275A GB3447275A GB1514507A GB 1514507 A GB1514507 A GB 1514507A GB 3447275 A GB3447275 A GB 3447275A GB 3447275 A GB3447275 A GB 3447275A GB 1514507 A GB1514507 A GB 1514507A
- Authority
- GB
- United Kingdom
- Prior art keywords
- images
- signals
- lens
- proportional
- cell
- 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
- 239000004411 aluminium Substances 0.000 abstract 2
- 229910052782 aluminium Inorganic materials 0.000 abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- 238000002835 absorbance Methods 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 229910017052 cobalt Inorganic materials 0.000 abstract 1
- 239000010941 cobalt Substances 0.000 abstract 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract 1
- 230000004907 flux Effects 0.000 abstract 1
- 239000006260 foam Substances 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 239000011572 manganese Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 238000005375 photometry Methods 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 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
- G01N21/251—Colorimeters; Construction thereof
-
- 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
Abstract
1514507 Photometric measurement of absorption PERKIN-ELMER CORP 19 Aug 1975 [22 Aug 1974 (2)] 34472/75 Heading G1A Apparatus for this comprises an unchopped optical system with source 271(a) or (b) producing sample and reference beams imaged on to PIN diode detectors 295, 299 feeding signals proportional to their light flux inputs via parametric amplifiers 300, 296 to means giving signals which are proportional to the logarithm of the detector signals and of which a summing amplifier finds the difference to give an output signal proportional to absorbance. An amplifier with logarithmic feedback obtains these logarithmically proportioned signals. Hollow cathode lamps 271a (manganese) and 271b (cobalt) with lenses 272a and 272b form beams selectable by rotatable mirror 277. Movable filter 281 is positioned to pass the wavelength of the selected lamp. Coated beam-splitter 287 transmits 90% and reflects 10%. Lens 285 images field stop S 1 near the entrance of sample cell 71 and aperture stop S 2 near its exit, so that the beam misses the cell sides. Lens 291 images S' 1 at S" 1 at condenser 309 which images S' 2 at S" 2 within the active area of detector 295. Lens 297 images S 1 at S 1 ' and S 2 at S 2 ' and the second of the lenses 298 images S 1 ' at S 1 ". Shutter 284 is closed except when measuring. As in Fig. 3, cell 71, made of silver rests on plastic V block 913 on aluminium block 907 with aluminium cover 915 all surrounded by foam plastic insulation 931. The sample reaches it via stainless tube 911. To keep the temperature of space 917, in which are also located the circuits, constant, thermistor 921 and device 925 operate heat pump 923, from which heat is removed by water flowing in passage 929 in metal block 927.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US49961774A | 1974-08-22 | 1974-08-22 | |
| US05/499,855 US4014612A (en) | 1974-08-22 | 1974-08-22 | Photometric measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1514507A true GB1514507A (en) | 1978-06-14 |
Family
ID=27053208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3447275A Expired GB1514507A (en) | 1974-08-22 | 1975-08-19 | Photometric measuring apparatus |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5847654B2 (en) |
| DE (1) | DE2537494A1 (en) |
| GB (1) | GB1514507A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2116707A (en) * | 1982-03-01 | 1983-09-28 | Varian Associates | Optical system for a liquid flow absorption cell |
| EP2344862A1 (en) * | 2008-09-30 | 2011-07-20 | Senseair AB | An arrangement adapted for spectral analysis of high concentrations of gas |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02206744A (en) * | 1989-02-06 | 1990-08-16 | Aloka Co Ltd | Absorbance measuring instrument |
| AU2003900902A0 (en) * | 2003-02-27 | 2003-03-13 | Varian Australia Pty Ltd | Spectrophotometer |
| JP6512913B2 (en) * | 2014-04-18 | 2019-05-15 | Ｄｒｃ株式会社 | Light irradiation device and measurement method of light transmission characteristics |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2220231A1 (en) * | 1972-04-25 | 1973-11-08 | Serv Anstalt | PHOTOMETER FOR DIGITAL DISPLAY OF LIGHT ABSORPTION OF A MEASURING SAMPLE IN A CUVETTE |
-
1975
- 1975-08-19 GB GB3447275A patent/GB1514507A/en not_active Expired
- 1975-08-22 JP JP10200875A patent/JPS5847654B2/en not_active Expired
- 1975-08-22 DE DE19752537494 patent/DE2537494A1/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2116707A (en) * | 1982-03-01 | 1983-09-28 | Varian Associates | Optical system for a liquid flow absorption cell |
| EP2344862A1 (en) * | 2008-09-30 | 2011-07-20 | Senseair AB | An arrangement adapted for spectral analysis of high concentrations of gas |
| EP2344862A4 (en) * | 2008-09-30 | 2012-06-06 | Senseair Ab | An arrangement adapted for spectral analysis of high concentrations of gas |
| US9001331B2 (en) | 2008-09-30 | 2015-04-07 | Senseair Ab | Arrangement adapted for spectral analysis of high concentrations of gas |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2537494A1 (en) | 1976-03-11 |
| JPS5847654B2 (en) | 1983-10-24 |
| JPS5155284A (en) | 1976-05-14 |
| DE2537494C2 (en) | 1987-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3704951A (en) | S light cell for increasing the intensity level of raman light emission from a sample | |
| US3927944A (en) | Spectrophotometer | |
| US3089382A (en) | Method and apparatus for analyzing fluids | |
| US1999023A (en) | Photoelectric comparator | |
| US2878388A (en) | Gas analyzing system | |
| JPS5847657B2 (en) | Ryu Taibun Sekiki | |
| US4014612A (en) | Photometric measuring apparatus | |
| US3388652A (en) | Photographic processing control | |
| GB1514507A (en) | Photometric measuring apparatus | |
| US4053236A (en) | Absorbance measuring photometer | |
| Bowen | Telescopes | |
| GB1298658A (en) | Photometer for measuring total radiant energy at selected angles | |
| US3512889A (en) | Spectrophotometer with plural dispersion using a single monochromator | |
| US3506359A (en) | Apparatus for measuring light absorption of a sample | |
| US3369447A (en) | Gain control for spectrophotometers | |
| SE432486B (en) | RECEIVING DEVICE FOR VARIOUS DISTANCE ZONES COMING DIFFUST REFLECTED SIGNALS | |
| RU2042981C1 (en) | Airfield lighting system model for landing training | |
| JPS5912132B2 (en) | A device that detects the presence of a specific substance in a gas stream | |
| JPS5610201A (en) | Object dimension measuring device | |
| US1742943A (en) | Automatic control for photographic printing exposures | |
| DE3006046C2 (en) | ||
| Castex et al. | Double Beam Vacuum Spectrophotometer for Far Ultraviolet Investigations | |
| US3011389A (en) | Spectrophotometer optical system | |
| GB1078181A (en) | Apparatus for measuring the scattering power of transparent or translucent sheets | |
| JPH023461B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |