HANDHELD, FIELD PORTABLE, SURFACE PLASMON RESONANCE APPARATUS AND ITS APPLICATIONS IN THE DETECTION OF CHEMICAL AND BIOLOGICAL AGENTS

An SPR detection apparatus has an optical system with a sensor member including a planar metallic layer, the sensor member being removably mountable to a housing. First optics direct an incident beamtoward a rear side of the metallic layer at a predetermined range of angles to a normal to the sensor layer. Second optics guide at least one reflected beam, corresponding to the incident beam, from the metallic layer to the transducer. The transducer converts incoming electromagnetic radiation to an electrical signal for transmission to a signal processor disposed in the housing and operatively connected to the at least one opto-electrical transducer so as to detect a surface plasmon resonance angle. The first optics are configured so that the at least one incident beam spans at least about 20 degrees. SPR检测装置具有光学系统，光学系统具有包括平面金属层的传感器构件，传感器构件可移除地安装到壳体。第光学器件使入射光束以相对于传感器层的法线的预定范围的角指向金属层的后侧。第二光学器件将相应于入射光束的至少个反射光束从金属层引导到换能器。换能器将进入的电磁辐射转换成电信号用于传输到信号处理器，其设置在壳体中并操作地连接到至少个光电换能器，以便检测表面等离子体共振角。第光学器件配置成使得至少个入射光束跨越至少大约20°。