Regular maintenance
(1) Moisture-proof If the room is humid, the optical lens is easy to mold and fog. Once the lenses become moldy, they are difficult to remove. The lens inside the microscope is more harmful to it due to the inconvenience of wiping. After the mechanical parts are damp, they are easy to rust. In order to prevent moisture, when storing the microscope, in addition to choosing a dry room, the storage place should also be away from the wall, off the ground, away from wet sources. 1~2 bags of silica gel should be placed in the microscope box as desiccant. And often bake the silicone. After its color turns pink, it should be baked in time and continued to be used after baking.
(2) The dust on the surface of the dust-proof optical element not only affects the passage of light, but also generates a large stain after being magnified by the optical system, affecting observation. Dust and sand particles fall into the mechanical part, which will also increase wear, cause movement obstruction, and the harm is also great. Therefore, the microscope must be kept clean frequently.
(3) Anti-corrosion microscope can not be put together with corrosive chemical reagents. Such as sulfuric acid, hydrochloric acid, strong alkali, etc.
(4) Heat prevention The purpose of heat prevention is mainly to avoid thermal expansion and contraction caused by the opening and peeling of the lens.
(5) Do not touch sharp objects, such as iron nails, needles, etc.
(6) Do not use it at will by non-relevant personnel.
Optical system wiping
Usually, the surface of each optical part of the microscope is cleaned with a clean brush or wiped with lens paper. When there are dirt, oil stains or finger prints on the lenses that cannot be erased, mold, fog and reuse after long-term discontinuation, they need to be wiped before use.
(1) Wipe range Eyepieces and condensers are allowed to be disassembled and wiped. Due to the complex structure of the objective lens, special instruments are required to correct them during assembly to restore the original accuracy, so it is strictly forbidden to disassemble and wipe.
When disassembling eyepieces and condensers, pay attention to the following:
a. Be careful.
b. When disassembling, mark the relative position of each element (can be marked by a line on the shell), the relative order and the front and back sides of the lens to prevent mistakes during reassembly.
c. The operating environment should be kept clean and dry. When removing the eyepiece, simply screw out the upper and lower lenses from both ends. The field of view bar inside the eyepiece cannot be moved. Otherwise, the field of view boundary is blurred. It is strictly forbidden to further decompose the upper lens after the condenser is unscrewed. Because its upper lens is oil-immersed, it is well sealed at the factory, and then decomposition will destroy its sealing performance and damage.
(2). Wipe method: First use a clean brush or blowball to remove the dust on the surface of the lens. Then use a clean flannel cloth to make a spiral unidirectional motion starting from the center of the lens to the edges. After wiping, change the flannel cloth to another place and wipe again until it is wiped clean. If there are oily stains, dirt or fingerprints on the lenses that cannot be wiped off, you can use willow branches wrapped in cotton wool and wiped with a small amount of alcohol and ether mixture (alcohol 80%, ether 20%). If there are heavier mildew spots or mildew spots that cannot be removed, you can use a cotton swab dipped in water and moistened with calcium carbonate powder (the content is more than 99%) for wiping. After wiping, the powder should be cleaned up. Whether the lenses are wiped clean can be checked by observing the reflected light on the lenses. It should be noted that the dust must be removed before wiping. Otherwise, the sand in the dust will groove the mirror surface. Do not use towels, handkerchiefs, clothes, etc. to wipe the lenses. The alcohol ether mixture should not be used too much to prevent the liquid from entering the bonding part of the lens and degumming the lens. There is a purple-blue light transmission film on the surface of the lens, do not wipe it off by mistake as dirt.
Mechanical part wipe
The painted part of the surface can be wiped with a cloth. However, it can not be rubbed with organic solvents such as alcohol and ether to avoid paint peeling. If the unpainted part has rust, it can be wiped off with a cloth dipped in gasoline. Wipe it clean and reapply the protective grease.