JPS5642127A - Absorptionmeter - Google Patents

Absorptionmeter

Info

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
Application number
JP11739379A
Other languages
Japanese (ja)
Inventor
Tatsumi Hiramoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ushio Denki KK
Ushio Inc
Original Assignee
Ushio Denki KK
Ushio Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ushio Denki KK, Ushio Inc filed Critical Ushio Denki KK
Priority to JP11739379A priority Critical patent/JPS5642127A/en
Publication of JPS5642127A publication Critical patent/JPS5642127A/en
Pending legal-status Critical Current

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

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.
JP11739379A 1979-09-14 1979-09-14 Absorptionmeter Pending JPS5642127A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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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