| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a spectrophotometer which is capable of obtaining absorption spectra in an ultraviolet region and a visible region by preventing the rise of a noise ratio when using a light source of which the amount of light is reduced by changes in wavelength. <P>SOLUTION: A signal from an optical detector for reference light and a signal from an optical detector for sample light transmitted through a sample are integrated to store quantities of light. When the quantity of reference light becomes lower than a preliminarily set threshold, integration times of the optical detector for reference light and the optical detector for sample light transmitted through the sample are extended, and AD conversion periods of a signal of reference light and a signal of sample light, which are obtained by integration, are extended. <P>COPYRIGHT: (C)2012,JPO&INPIT |
