1, Correct instalēšana problēmas
Pirms lietošana a mikroskops, pirmais uzstādīt the okulārs un mērķis of the mikroskops. The installation of the eyepiece is extremely simple, and the main problem lies in the installation of the objective lens. Due to the high value of the objective lens, if the thread is not pareizi slēgts laikā uzstādīšana, it is easy for students to fall to fall to the ground and cause lens bojājumi. Tāpēc, for safety reasons, it is uzsvērts ka studenti use to left index finger and middle finger to hold the objective lens when installing it, and then use toir right hand to install it, so that even if it is not correctly installed, it will not fall to the ground.
2, Correct līdzinājums of light issues
Fokusēšana uz gaisma ir an svarīgs solis kad izmanto a mikroskops. Daži studenti gadījuma rakstura pagrieziens an mērķis objektīvs uz priekšu diafragma diafragma kad fokusēšana uz gaisma, drīzāk nekā lietošana a mazjaudas objektīvs as nepieciešams. Kad rotē atstarotājs, I like to use one hand and often pull it off. So when guiding students, teachers must uzsver use use low-power mirrors to aim at light. Kad gaisma ir stiprs, lietošana a mazs apertūra, plakans spogulis, un kad gaisma ir vāja, lietošana a liela apertūra, ieliekts spogulis, un atstarotājs. Lietošana abas rokas pagrieziens līdz tu redzi a vienmērīgi gaišs apļveida lauks of skats. Pēc izlīdzināšana gaisma, do not kustēties mikroskops pavirši to novērst gaisma no precīzi ieiet atvērums atvērums caur atstarotājs.
3, Problēma of pareizi izmantojot kvazi fokuss skrūve
Using a quasi focal screw to adjust the focal length and find the object image can be said to be the most important step in the use of a microscope, and it is also the most difficult step for students. Students are prone to the following errors during operation: firstly, directly focusing under a high-power mirror;
The second is that regardless of whether the lens barrel rises or falls, the eye always sees the field of view in the eyepiece; The third reason is that the critical value of the object distance is not understood. When the object distance is adjusted to 2-3 centimeters, it is still upward, and the speed of rotating the quasi focal screw is very fast. The first two types of errors often result in the objective lens colliding with the mount, damaging the mount or lens, while the third type of error is a common phenomenon among students when using a microscope. In response to the above errors, the teacher must emphasize to the students that adjusting the focal length must be lowered at a low magnification. First, rotate the coarse focusing screw to slowly lower the lens barrel, and the objective lens should be close to the glass slide. However, be careful not to let the objective lens touch the glass slide. During this process, the eye should look at the object lens from the side, then use the left eye to gaze into the eyepiece, and slowly reverse adjust the coarse focusing screw to slowly raise the lens barrel until the object image is visible, At the same time, explain to the students that the object distance of a general microscope is about 1 centimeter. Therefore, if the object distance has far exceeded 1 centimeter, but the object image is still not visible, it may be that the specimen is not in the field of view or the coarse focus spiral rotates too fast. At this point, the loading position should be adjusted, and then the above steps should be repeated. When a blurred object appears in the field of view, a fine focus spiral adjustment should be used to narrow the search range, Increase the speed of finding objects.
Pēc lietošanas a mazjaudas objektīva un pārslēgšanās uz a lieljaudas objektīvs, studenti bieži priekšroka lietošana viņu pirksti to tieši pagrieziet mērķis objektīvs, domāšana tas ir vairāk darba-taupīšana. Tomēr, šis var viegli cēlonis optika ass of mērķis objektīvs to novirze, jo materiāls of pārveidotājs is soft and ir augsta precizitāte, un pavediens ir viegli vaļā dēļ to nevienmērīgs spēks. Vienreiz pavediens ir ir bojāts, un pavediens ir bojāts% 2c the whole converter will be scrapped. Teachers should guide students to hold the lower rotating lever of the converter to convert the objective lens.
5, The problem of cleaning optical glass
Optiskais stikls is lietots lēcām, prizmas, lēcas, etc. of instrumenti. Laikā ražošana and lietošana, it is easy to get piesārņots ar oil, water-based dirt, fingerprints, etc., who influences imaging and transmittance. To clean optical glass, different cleaning agents, tools, and methods should selected based on the characteristics and structures of the dirt. Clean lēcas pārklāts ar antireflektīvs plēve, tāds as tie of kameras, slide projektori, and mikroskopi, use a cleaning agent of about 20 percent alcohol and about 80 percent ether. When cleaning, use a soft sarstle brush or cotton ball with a small amount of cleaning agent, and make a circular motion outward from the center of the lens. Do not immerse such lenses in cleaning agents for cleaning. Do not use force to wipe the lens when cleaning, otherwise it may damage the anti reflective film and damage the objektīvs.
Metode metode tīrīšana prizmas un plakani spoguļi var būt iznests ārā saskaņā to metode no tīrīšana lēcas.
The above cleaning agent can also be used to clean greasy mist, water wet mist, and oil-water mixed mist on optical glass, and the cleaning method is similar to that of cleaning lenses.
