In the classification of microscopes, the metallurgical microscope is an important model in the microscope, so, all the models of the metallurgical microscope can be roughly divided into two categories: the upright metallographic microscope and the inverted metallographic microscope. Simply understand that the upright metallographic microscope is our common model. The lens is on the top, and the observed object is placed under the lens for observation; as the name suggests, the inverted metallographic microscope has the lens and the observed object turned off. On the top, the lens is on the bottom for observation.

In the high magnification objectives of inverted metallographic microscopes, 80 times and 100 times high magnification lenses are usually used, and 100 times high magnification lenses are divided into dry lenses and oil lenses. Dry lenses are more expensive and have better effects; then When the metallographic objective lens we get has the oil logo on it, then we should know that this is an oil lens that needs to be dripped for observation. At this time, you need to understand the oil lens operation method of the inverted metallographic microscope:

We all know that the use of the oil lens of an upright microscope is relatively simple. Drop the pine and cypress oil directly on the biological glass slide or the surface of the object to be observed, and then insert the objective lens into the oil, and use the oil as the medium to observe the object; Then the inverted metallurgical microscope is different, please pay attention. When you touch the oil lens of an inverted metallographic microscope, do not drop the oil on the observed object, so the oil may flow down directly. The correct operation method is to drop the oil directly onto the objective lens, and then put the objective lens Adjust to focus on the surface of the observed object for observation, I believe you must understand.