JPS5540925A - Photoelectric spectrophotometer by double wave photometry - Google Patents
Photoelectric spectrophotometer by double wave photometryInfo
- Publication number
- JPS5540925A JPS5540925A JP11381078A JP11381078A JPS5540925A JP S5540925 A JPS5540925 A JP S5540925A JP 11381078 A JP11381078 A JP 11381078A JP 11381078 A JP11381078 A JP 11381078A JP S5540925 A JPS5540925 A JP S5540925A
- Authority
- JP
- Japan
- Prior art keywords
- wave length
- intensity
- lambdar
- lambdas
- light flux
- 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.)
- Pending
Links
- 238000005375 photometry Methods 0.000 title 1
- 230000004907 flux Effects 0.000 abstract 3
- 230000003595 spectral effect Effects 0.000 abstract 3
- 230000035945 sensitivity Effects 0.000 abstract 2
- 230000002238 attenuated effect Effects 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
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
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)
- Spectrometry And Color Measurement (AREA)
Abstract
PURPOSE:To obtain the data high in reliability with quick measuring work, by taking the wave length of light flux having greater strength as the wave length of light flux inserted with light flux attenuation element. CONSTITUTION:Wave lengths are set as lambdaR=370nm and lambdaS=480nm, and when the intensity ER, ES is ES>=KER, the adjuster 8 feeds pulses required for the pulse motors PM1 and PM2, the spectral angle of the spectroelements G1 and G2 is changed with the revolution. The wave length lambdaS of the first spectral unit 1 is selected to 370nm and that of the second spectral unit 2, lambdaR is to 480nm respectively. The light having stronger wave length lambdaS enters the wave length lambdaR operated for the dinode feedback of the photo detector 5 to decrease the applied volgate and to reduce the sensitivity. Accordingly, the intensity ER is constant as E'R with the dinote feedback, the intensity ES is attenuated to E'S by the decrease in the sensitivity of the detector 5 to reduce the ratio of beam intensity of E'R and E'S. Thus, the dynamic range over is avoided to obtain highly reliable data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11381078A JPS5540925A (en) | 1978-09-16 | 1978-09-16 | Photoelectric spectrophotometer by double wave photometry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11381078A JPS5540925A (en) | 1978-09-16 | 1978-09-16 | Photoelectric spectrophotometer by double wave photometry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5540925A true JPS5540925A (en) | 1980-03-22 |
Family
ID=14621618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11381078A Pending JPS5540925A (en) | 1978-09-16 | 1978-09-16 | Photoelectric spectrophotometer by double wave photometry |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5540925A (en) |
-
1978
- 1978-09-16 JP JP11381078A patent/JPS5540925A/en active Pending
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