| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical detection device allowing improvement in detection accuracy.SOLUTION: First optical filters (74, 90, 92) and a second optical filter 76 contain direct transition semiconductor particles having an absorption end at an ultraviolet region, and have characteristics in which reflectance of diffuse reflectance spectrum is flat in the visible light region with the direct transition semiconductor particles in powder form. A signal of a first light detection part (photodiodes PD1, PD3, PD4) and a signal of a second light detection part (photodiode PD2) are used to calculate an amount of light in a first wavelength range. A signal from correction photodiodes (PS1, PS2) is used to correct the calculation result of the amount of light in the first wavelength range in accordance with a light intensity distribution in the vicinity of the first light detection part and the second light detection part. |
