The structure of the objective lens is complex and the production is precise. Due to the aberration correction, the metal object lens tube is composed of fixed lens groups at a certain distance. Objective lens has many specific requirements, such as axial alignment and focusing. Focusing is not only for microscopic inspection, but also for conversion of objective lens with another magnification when the image is clear after being observed with an objective lens with a certain magnification, and the image center deviation should also be within a certain range, that is, the degree of axis alignment. The quality of the focusing performance and the degree of axial alignment is an important sign of the quality of the microscope Objective lens converter The precision of the. Before using the high-power objective, you must first find the object to be observed with the low-power objective, and adjust it to the center of the field of vision, and then rotate the converter to change the high-power objective. After using the high-power objective lens, the brightness in the field of vision will become dark, so generally use a larger aperture and the concave side of the reflector, and then adjust the fine focusing spiral. The number of objects to watch decreases and the volume increases.
