What is a stereoscopic microscope? I hope to have specific principles and instructions.

Structural principle, characteristics and application scope of stereomicroscope

Stereomicroscope can also be called: solid microscope or surgery and dissecting microscope. It is a kind of visual instrument with positive stereoscopic impression. The principle of its optical structure is that the two beams of light after imaging an object are separated by two groups of intermediate objective lenses, also called zoom lenses, to form a certain angle, which is called volume viewing angle, generally 12 degrees-15 degrees. After imaging through the respective eyepieces, the magnification is changed by changing the distance between the intermediate lens groups. Using the dual-channel optical path, the left and right beams in the binocular tube are not parallel, but have a certain angle. In essence, two single-barrel microscopes are placed side by side, and the optical axes of the two barrels form the perspective formed when people observe an object with their eyes, thus forming a stereoscopic vision image in three-dimensional space. Its characteristics are: large field of view diameter, large focal depth, easy to observe all aspects of the detected object; Although the magnification is not as good as that of conventional microscope, its working distance is very long; It looks positive, which is convenient for practical operation, because the prism under the eyepiece turns the image upside down. According to the actual use requirements, the current stereoscopic microscope can be equipped with a variety of accessories, such as eyepiece and auxiliary objective lens with higher magnification, in order to obtain greater magnification. A digital imaging system composed of digital camera, video camera, electronic eyepiece and image analysis software can be connected to a computer for analysis and processing through various digital interfaces. The lighting system also has reflected light and transmitted light, and the light sources are halogen lamps, ring lamps, fluorescent lamps and cold light sources. According to these optical principles and characteristics of stereomicroscope, it is widely used in industrial production and scientific research. For example, in the fields of biology and medicine, it is used for slicing surgery and microsurgery; It is used for the observation, assembly and inspection of micro parts and integrated circuits in industry.

The disadvantage should be that there is an angle between the framing and the vertical, and the image will be slightly different from the reality.