Title:
WAVELENGTH CHRACTERISTICS MEASURING DEVICE AND METHOD USING LIGHT HAVING WAVELENGTH THEREOF CONTINUOUSLY CHANGED
Document Type and Number:
WIPO Patent Application WO/2002/088660
Kind Code:
A1
Abstract:
A wavelength-variable light source emits to a measurement object light having its wavelength continuously changed from predetermined start wavelength to stop wavelength. A timing information output unit generates a plurality of elements of timing information indicating the output timings of lights respectively having a start wavelength, a stop wavelength and a plurality of wavelengths obtained by dividing the interval between the start and step wavelengths by specified steps. A light receiving unit receives light from the measurement object and outputs a signal representing the measurement value of the received light. A plurality of amplifiers receive a signal from the light receiving unit and amplify the signal at respective specified amplification ratios. A signal selection unit selects one signal within a specified measuring range out of signals amplified at respective amplification ratios by the amplifiers and outputs it as a measurement value by light having a wavelength defined by applicable timing information in the plurality of elements of timing information from the timing information output unit.
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Inventors:
SUGIMOTO TAKASHI (JP)
OHTATEME HIROAKI (JP)
OHTATEME HIROAKI (JP)
Application Number:
PCT/JP2002/004202
Publication Date:
November 07, 2002
Filing Date:
April 26, 2002
Export Citation:
Assignee:
ANRITSU CORP (JP)
SUGIMOTO TAKASHI (JP)
OHTATEME HIROAKI (JP)
SUGIMOTO TAKASHI (JP)
OHTATEME HIROAKI (JP)
International Classes:
G01J1/18; G01J3/06; G01J3/12; G01M11/00; (IPC1-7): G01M11/00; G01J3/06; G01J3/28
Foreign References:
| JP2000292260A | 2000-10-20 | |||
| JPS59151026A | 1984-08-29 | |||
| JPH0611445A | 1994-01-21 | |||
| JP2000164981A | 2000-06-16 |
Attorney, Agent or Firm:
Suzuye, Takehiko c/o SUZUYE & SUZUYE 7-2 (Kasumigaseki 3-chome Chiyoda-ku, Tokyo, JP)
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