Online cell microscopic visualizer

The utility model relates to an online cell microvisualizer used for a biochemical reactor, which includes a visualizer main body, an object lens, an observing entrance window, a sampling taking device and an outer light source system. The utility model is characterized in that a reflector prism is arranged between the outer light source system and the object lens, a reflector lens is arranged behind the object lens and in front of the observing entrance window, a ring diaphragm piece is arranged in front of the reflector prism, and a charge coupling device (CCD) or an area array image sensor are arranged on the top of the reflector prism side. The sampling-taking device is composed of a sampling block, an elastic element and a shift device; wherein, the elastic element is connected between the sampling block and the shift device. The clearance between the front face of the sampling block and the observing entrance window forms a sampling pool. The outer light source system of the utility model can conveniently change wavelength by displacing different color-filtering sheet. Meantime, a dark field illumination can improve the contrast and the resolution factor of the visualizer to the image formed by cells. The utility model has the advantages of simple structure, convenient use and low manufacture cost.