The Principle of Construction, Features, and Application of a Stereomicroscope
Stereoscopic microscope, also known as solid microscope or operational and anatomical microscope. It is a visual instrument with a sense of three dimensionality.
The optical structure principle is based on a shared primary objective lens. The two beams of light that image an object are separated by two sets of intermediate objective lenses, also known as zoom lenses, and form a certain angle called the body view angle. Generally, it is 12-15 degrees, and then imaged through their respective eyepieces. The magnification change is obtained by changing the distance between the intermediate lens groups. Using a dual channel optical path, the left and right beams in the binocular tube are not parallel, but have a certain angle, providing a three-dimensional image for both eyes. It is essentially two single tube microscopes placed side by side, with the optical axes of the two tubes forming a perspective equivalent to that formed when observing an object with both eyes, thus creating a three-dimensional stereoscopic image.
Its characteristics are: large field of view diameter and depth of focus, which facilitate the observation of all aspects of the detected object; Although the magnification is not as good as conventional microscopes, their working distance is long; It looks upright, making it easy to operate, because the prism under the eyepiece reverses the image.
According to actual usage requirements, current stereomicroscopes can be equipped with a variety of accessories. For example, if you want to obtain a larger magnification, you can choose a higher magnification eyepiece and auxiliary objective lens. Various digital interfaces, digital cameras, cameras, electronic eyepieces, and image analysis software can be used to form a digital imaging system that can be connected to a computer for analysis and processing. The lighting system also includes reflected light, transmitted light illumination, and light sources such as halogen lamps, ring lamps, fluorescent lamps, cold light sources, etc.
The optical principles and characteristics of stereomicroscopes determine their widespread application in industrial production and scientific research. For example, in the fields of biology and medicine, it is used for slicing operations and microsurgery; Used in industry for the observation, assembly, inspection, and other work of small components and integrated circuits.
