Research And Design Of Novel PhotoSynthMeters

Spectrophotometry is a widely-used analytical tool. It measures the selective absorption of different-wavelength lights, and thus derivers out the chemical components of materials and agents. Now spectrophotometry has received wide spread attention in the fields of food, medicine and life science.In this study, a novel photosynthmeter (PSM) was developed that uses a visible spectrum synthesized from tri-fundamental-color lights (red, green and blue). The PSM is built on the principle and structure of the traditional spectrophotometer, takes into account the sensitivity, stability and portability, and also incorporates recent advances. The main contributions of this study including:1、To control the synthesized spectrum by tri-fundamental-color LED lights according to the principle of synthesized spectrum. This method can synthesize the different wavelengths of visible light, replace the traditional light of continuous spectrum, and avoid complex light splitting steps as well as expensive array of photoelectric conversion. Thus, it accomplishes the spectral scanning efficiently, and meanwhile, reduces the cost of photometry.2、To meet the need of real-time detection, the developed spectrophotometer has high practicability in terms of small size, simple structure of the light path and system, and low manufacturing cost.