The application scope and cleaning and maintenance methods of microscopes
A microscope is a tool that can magnify small objects. Nowadays, it has been widely used in various industries such as teaching, healthcare, food, and manufacturing. Optical microscopes can be mainly divided into two categories. One is the commonly used biological microscope for teaching and medical fields, while the other is the widely used metallographic microscope for observing and studying metal structures, mineral structures, circuit boards, surface coatings, and particles in industries such as metallurgy, mining, and electronics.
Metallographic microscopes also use the principle of optical imaging to magnify small objects and present them to us through a combination of two lenses. However, their magnification is generally below 1000 times, while 400 times is commonly used. At the same time, the optical path of a metallographic microscope is also very different from that of a biological microscope. In biological microscopes, transmission light imaging is generally used, while samples such as metals observed by metallographic microscopes are generally opaque. Therefore, reflection light imaging is used. Metallographic microscopes are also divided into two types: upright and inverted. Due to the need for measurement and analysis of samples in metallographic observation, the eyepiece of a metallographic microscope has a special type of eyepiece that can be roughly measured, called a micrometer eyepiece. This type of eyepiece is achieved by adding a cross marking plate with a scale to the lens of the eyepiece, thereby achieving simple measurement of the sample. The objective lenses of metallographic microscopes are also divided into ordinary achromatic objective lenses and flat field achromatic objective lenses. Due to the commonly used magnification of metallographic microscopes being 400 times, some metallographic microscopes, in order to save costs, only have a 40x flat field objective configured in the standard configuration. In addition, due to the analysis and research of metal structures required by metallographic microscopes, three-way computer connected metallographic microscopes are more commonly used, and professional metallographic analysis software used for these analyses and studies is also a common configuration of metallographic microscopes. However, due to the high professionalism of these metallographic analysis software, there are also high professional requirements for users. In addition, some metallographic prototypes used for sample processing and equipment such as profiling machines are also commonly used together.
Due to the fact that metallographic microscopes are also precision instruments, necessary cleaning work should be carried out after using the microscope, and then placed in a tool cabinet. In addition, it is necessary to regularly clean and maintain the microscope; Pay attention to moisture prevention and release. When cleaning the key objective and eyepiece, be sure to gently wipe them with a cotton ball. For dirt that is difficult to clean, you can use a cotton ball dipped in a mixture of ethanol and ether (8 and 2 ratios) to gently wipe it. Cotton balls cannot be reused. In addition, after using a high magnification immersion lens, more attention should be paid to cleaning to prevent contamination of other non oil lenses. Nowadays, many microscopes have already done good anti mold treatment on the lens itself.
