Spectral characteristic measuring apparatus and method for...

Details Spectral characteristic measuring apparatus and method for... Spectral characteristic measuring apparatus and method for...

2005-04-05

2005-04-05

Lauchman, Layla (Department: 2877)

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

C356S319000, C356S073000, C250S252100

Reexamination Certificate

active

06876448

ABSTRACT:
A spectral characteristic measuring apparatus is provided with a memory and a CPU. The memory stores a spectral profile output from a sample light sensor array when light from a lamp is received, and a plurality of spectral profiles to be output from the sensor array at each displaced position in the case where a light separator is displaced relative to a grating member of the sensor array at a certain pitch stepwise in a wavelength diffusing direction. The CPU controls the lamp to emit light in a state that a white plate for calibration is disposed as a sample, compares a spectral profile output from the sensor array for correction with each spectral profile stored in the memory, and sets a displacement amount corresponding to the spectral profile that is most approximate to the corrective spectral profile as a wavelength shift correction amount.

REFERENCES:
patent: 5636015 (1997-06-01), Imura et al.
patent: 6020959 (2000-02-01), Imura
patent: 6535278 (2003-03-01), Imura

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