JPS5642127A - Absorptionmeter - Google Patents
AbsorptionmeterInfo
- Publication number
- JPS5642127A JPS5642127A JP11739379A JP11739379A JPS5642127A JP S5642127 A JPS5642127 A JP S5642127A JP 11739379 A JP11739379 A JP 11739379A JP 11739379 A JP11739379 A JP 11739379A JP S5642127 A JPS5642127 A JP S5642127A
- Authority
- JP
- Japan
- Prior art keywords
- measured
- pulse width
- larger
- current value
- peak current
- 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
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
- G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
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)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
PURPOSE:To enlarge the measuring range of the absorptiometer by a method wherein a flash lamp is used as a light source for projecting light onto the tested subject, and the discharge current of the flash lamp is controlled so that the peak current value and the pulse width may be larger than predetermined values. CONSTITUTION:When the flash lamp comprising xenon gas filled in a bulb having an inside diameter D of 4mm. and an arc length L of 30mm. is operated with a peak current value of 1,000A/cm<2> and a pulse width of 1m sec, the total luminous flux instantaneously becomes 1.2X10<6>lumen. If the transmission factor of ozoneless quartz glass is measured for 2,200Angstrom by using this flash, the thickness up to about 20mm. can be measured. This means that far thicker subjects can be measured, as compared with the case where a xenon short-arc discharge lamp is utilized. In addition, when the peak current value is set to be larger than 300A/cm<2> and the pulse width is set to be larger than 30mu sec, the inconvenience of fluctuations of the beam- condensing efficiency is avoided, and the absorptiometer having a sufficiently high efficiency of light emission and a wide range of measurement can be obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11739379A JPS5642127A (en) | 1979-09-14 | 1979-09-14 | Absorptionmeter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11739379A JPS5642127A (en) | 1979-09-14 | 1979-09-14 | Absorptionmeter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5642127A true JPS5642127A (en) | 1981-04-20 |
Family
ID=14710534
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11739379A Pending JPS5642127A (en) | 1979-09-14 | 1979-09-14 | Absorptionmeter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5642127A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59138930A (en) * | 1983-01-31 | 1984-08-09 | Toshiba Corp | Absorbancy measuring device |
JPS59178339A (en) * | 1983-03-29 | 1984-10-09 | Toshiba Corp | Measuring apparatus for absorbance |
JPH02203253A (en) * | 1989-02-01 | 1990-08-13 | Aloka Co Ltd | Absorptiometer |
-
1979
- 1979-09-14 JP JP11739379A patent/JPS5642127A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59138930A (en) * | 1983-01-31 | 1984-08-09 | Toshiba Corp | Absorbancy measuring device |
JPS59178339A (en) * | 1983-03-29 | 1984-10-09 | Toshiba Corp | Measuring apparatus for absorbance |
JPH0347450B2 (en) * | 1983-03-29 | 1991-07-19 | Tokyo Shibaura Electric Co | |
JPH02203253A (en) * | 1989-02-01 | 1990-08-13 | Aloka Co Ltd | Absorptiometer |
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