| 摘要 |
PURPOSE: A spectrometer is provided to accurately measure the transmittance of an analysis object having an optical sheet and non-mirror reflecting surface according to a frequency band. CONSTITUTION: A spectrometer comprises a light supply unit(10), a first optical system(20), a second optical system(40), and an analysis unit(50). The light supply unit provides lights of a set frequency band. The first optical system comprises a collimator lens(21) and a first lens(23). The collimator lens converts the light supplied from the light supply unit into parallel beams. The first lens collects the lights supplied from the collimator lens on an analysis object(30). The first optical system comprises a second lens(41) and a third lens(43). The second lens receives the lights penetrated through the analysis object and converts the same into the parallel beams. The third lens supplies the light supplied from the second lens to the analysis unit. The analysis unit analyzes transmission properties according to a frequency band of the analysis object by using the light supplied through the third lens.
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