JPS5636025A - Secondary differential spectrophotometer - Google Patents
Secondary differential spectrophotometerInfo
- Publication number
- JPS5636025A JPS5636025A JP11228479A JP11228479A JPS5636025A JP S5636025 A JPS5636025 A JP S5636025A JP 11228479 A JP11228479 A JP 11228479A JP 11228479 A JP11228479 A JP 11228479A JP S5636025 A JPS5636025 A JP S5636025A
- Authority
- JP
- Japan
- Prior art keywords
- secondary differential
- central wavelength
- intermediary
- slits
- spectroscope
- 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
- 230000004907 flux Effects 0.000 abstract 2
- 230000003595 spectral effect Effects 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000001360 synchronised effect Effects 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
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
- G01J3/433—Modulation spectrometry; Derivative spectrometry
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
PURPOSE:To enable direct finding of the secondary differential at the point of central wavelength with no vibrating part by a method wherein two kinds of luminous flux having the same central wavelength taken out from a spectroscope by the use of two wide and narrow kinds of slits are made to pass through a sample and the secondary differential is found based on the difference in the output of photoelectric conversion of the luminous flux. CONSTITUTION:The output spectral image of a spectrophotometer for a finite slit width is the one obtained through convolution integration of an ideal spectral image by the device function and, therefore, it becomes a sharp triangle shown by dashed lines when the slit width is small, while a flat and wide triangle being obtained when the slit width is large. Accordingly, the secondary differential at a central wavelength is obtained from the difference between these triangles. The light from an illuminant 1 is passed through the slits A3 and A3' of a spectroscope 3 and the slits A2 and A2' of another spectroscope 2 having twice the width of the former alternately through the intermediary of a rotary mirror B and further is passed through a sample 5 through the intermediary of another rotary mirror B', and the secondary differential is found from the difference between the two signals through the intermediary of a photoelectric transducer 6, a synchronous rectifier 7 and a subtraction circuit 8. Thereby, the secondary differential can be found directly at the point of central wavelength with no vibrating part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11228479A JPS5636025A (en) | 1979-08-31 | 1979-08-31 | Secondary differential spectrophotometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11228479A JPS5636025A (en) | 1979-08-31 | 1979-08-31 | Secondary differential spectrophotometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5636025A true JPS5636025A (en) | 1981-04-09 |
Family
ID=14582834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11228479A Pending JPS5636025A (en) | 1979-08-31 | 1979-08-31 | Secondary differential spectrophotometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5636025A (en) |
-
1979
- 1979-08-31 JP JP11228479A patent/JPS5636025A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FR2352290A1 (en) | SPECTROMETER FOR SIMULTANEOUS MEASUREMENT OF THE LIGHT INTENSITY OF SPECTRAL BANDS | |
| AU535463B2 (en) | 4h-3,1-benzoxazine derivatives | |
| JPS5352180A (en) | Two light beams spectrophotometer | |
| AU2349977A (en) | Removable photoreceptor module | |
| AU520695B2 (en) | Photometer for measuring thin layers | |
| JPS5269378A (en) | Magnetic optical photometer | |
| JPS5637527A (en) | Spectrophotometer | |
| JPS5636025A (en) | Secondary differential spectrophotometer | |
| JPS535696A (en) | Discriminating apparatus for pattern of printed matter | |
| JPS57161534A (en) | Device for spectroscopic analysis | |
| JPS5239311A (en) | Solid state pickup device | |
| JPS5451589A (en) | Slit device in mass spectrometer | |
| SU602793A1 (en) | Double-beam compensation photometer | |
| JPS5269653A (en) | Detector for displacement of scanning beam | |
| JPS5666715A (en) | Two color thermometer | |
| JPS5368090A (en) | Semiconductor laser unit | |
| JPS5648544A (en) | Crack detector | |
| JPS5299842A (en) | Measurement of wavelength dispersion | |
| JPS5332787A (en) | Double light flux changing angle photometer | |
| JPS5379543A (en) | Optical device in electrophotographic copier of slit exposure type | |
| DEGTIAREV et al. | Differential instrument for measuring the spectral brightness coefficient of the sea surface | |
| SU636488A1 (en) | Spectral ratio pyrometer | |
| JPS5530631A (en) | Spectroscopic photometer | |
| JPS5379544A (en) | Optical device for electrophotographic copier | |
| JPH01129132A (en) | Evaluator of characteristic of fluorescent lamp |