Patent ID: 6870618
Filing Date: 2005-03-22
Classification: G01J,G01M

Abstract:
1. A wavelength characteristic measuring apparatus comprising: a wavelength variable light source which emits a light whose wavelengths continuously change from a preset start wavelength up to a stop wavelength to a measuring object; timing information outputting means for generating a plurality of timing information showing emission timings of lights to be emitted from the wavelength variable light source and having start and stop wavelengths and a plurality of wavelengths obtained by delimiting the wavelengths between the start and stop wavelengths by predetermined steps; a light receiving section which receives a light output from the measuring object and outputs a signal showing a measured value of a received light; a plurality of amplifiers which receive the signal output from the light receiving section and amplify the signal at each predetermined amplification factor; and a signal selecting section which selects one signal kept in a predetermined measuring range of signals amplified at the each predetermined amplification factor by said plurality of amplifiers and outputs the signal as the measured value of the light having a wavelength which is decided in accordance with corresponding timing information among said plurality of timing information output from the timing information outputting means.