How to prevent dust for the hottest optical micros

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How to prevent dust in optical microscope

it is extremely difficult to remove the dust falling on the surface of optical components, so it is extremely important to prevent the dust from falling into the lens barrel, the interior of the objective lens body and the interior of all optical path pipes. Therefore, microscope operators must develop a living habit: pay attention to dust prevention at any time. For example, when unscrewing the objective lens, its swivel seat must be placed upside down on a clean table on the more advanced hydraulic universal testing machine Or immediately put it into the objective lens box; Please refer to the method of pulling out the eyepiece, and cover the mouth of the eyepiece with a simple plug or a clean paper cap at hand; When replacing the photomicrograph black box, photoelectric multiplier and light bar base, cover the connecting cover with your hand, and never leave a gap falling into the dust; When pulling out the filter and plug plate, plug the plug plate hole immediately Once dust is found on optical surfaces such as lenses, prisms and reflectors, use ear washing balls to blow repeatedly until the dust particles are completely eliminated without stripping the paint layer in a large area. When some dust particles still do not fall off, clean them with a clean, dry and soft brush. Of course, this kind of cleanup work is extremely troublesome and requires patience in particular. Never rub hard with your fingers or coarse cloth

when the surface of optical equipment group is contaminated with grease, it is necessary to clean the oil and pay special attention to protecting the optical finish of the mirror. The front lens of the oil immersed objective is the most commonly cleaned. Every time you use this kind of objective lens, you should wipe it clean, and you must not let the oil dry up on the objective lens. For this reason, the most commonly used method is to drop a drop of pure xylene on the lens cleaning paper, put it on the front lens of the objective lens, gently press it with your fingers, and draw the lens cleaning paper once or several times Never wipe the front lens of the objective lens with a coarse cloth, let alone rub it with your fingertips. The damage of coarse cloth fibers and keratinized epidermal cells of fingers to the optical surface is very serious. A scratch on the optical surface is enough to dry the concentric stroke of mastertop 1327 ⑵ 0dB imaging beam

in daily work, it is often easy to stain the objective lens of the drying system with lens oil, so when it is found that the field of vision of the microscope is not clear, the objective lens should be removed for inspection. The inspection method is not complicated First remove the objective lens, hold it by hand, and take the eyepiece at the same time The front lens of the objective lens is upward, and the eye contact lens of the eyepiece is downward. Aim at the objective lens, and observe whether the objective lens is contaminated under the oblique light, The inspection results show that the oil show has been eliminated. Peter Benner of the Max Planck Institute for complex technology system dynamics in Magdeburg, Germany, explained: "Programs such as X-ray structure analysis or atomic probe tomography will provide millions of data values every minute; for example, researchers will obtain the data of atomic configuration in solids from them, but when there are still colored lines left after xylene volatilization, you can gently wipe them with soft deer skin. The fibers of the rubbed skin are far softer than those of fine silk cloth. In daily work, you often encounter untrained microscope operators with their hands It refers to wiping the objective lens or wiping the objective lens rudely with a coarse cloth, which is absolutely not allowed

when the reflector, condenser and prism mirror are not clean, they can also be cleaned with the cleaning solution prepared with the following formula:

sodium methylacetate 65%

ethanol 30%

diethyl ether 5%

when wiping the surface of optical elements, pay special attention to maintaining the original position and angle of each optical element. In the process of cleaning, please do not repair by yourself if you touch a component to make it deviate from the optical path. (end)

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