Plant monitoring based on measurement of multipoint fluorescence spectra in leaves induced by ultra-violet LEDs.

考虑到植物表皮的透射率，用于植物叶片激发的光源由具有吸收可见光的滤光器的375nm和400nm的LED制成。荧光光谱能够通过大于30Wm2的LED激发<-2>以及激光激发来测量。结合微距透镜、成像光谱仪等研制了多点荧光光谱测量系统，利用该系统可以精确地评价叶片的胁迫影响。

A light source for plant leaf excitation was made by LEDs of 375nm and 400nm with optical filters which absorb visible light, in consideration of the transmittance of the plant epidermis. The fluorescence spectra were able to be measured by the LEDs excitation of more than 30Wm^<-2> as well as the laser excitation. The multipoint fluorescence spectra measurement system was developed combined with a macro lens, the imaging spectrometer and so on. The stress influence of leaves was precisely evaluated with this measurement system.