How to use and precautions for oil lens in optical microscope
1. When using a microscope oil lens, be sure to place the microscope upright on the table. Do not bend the arm of the microscope, which will cause the stage to tilt, and the cedar oil will flow out, which will affect the appearance and stain the table.
2. For the light, when using natural light as the light source, you can use a flat reflector; when using artificial light as the light source, use a concave mirror to open the aperture first, turn the reflector to concentrate the light on the light collector, and move it up and down according to your needs Collector or reduce the aperture to get the ideal luminosity. When observing objects with a normal low-magnification lens or a high-power lens or using an oil lens to detect unstained samples, it is necessary to lower the collector or reduce the aperture to reduce the brightness. If you use an oil lens When detecting unstained samples, the luminosity is strong, the brightness of the microscope should be adjusted to the brightest, the aperture is fully opened, and the light collector is raised.
Precautions
1. Before operation, be sure to observe with a low magnification lens and a high magnification lens, and then move the enlarged part to the center of the field of view.
2. Adjust the light collector to the highest position, and adjust the aperture to the maximum.
3. Turn the converter so that the high-magnification lens leaves the light hole, drop a drop of cedar oil on the glass slide where you need to observe, then turn the oil lens slightly, and watch the distance between the lens and the glass slide horizontally from the side when switching the oil lens , so that the lens is immersed in the oil, the glass slide cannot be crushed.
4. Observe the eyepiece with the left eye, and slowly turn the fine adjuster until the object image is clear. If the objective lens does not appear or the target is unsatisfactory to search again, you should press the low magnification-high magnification-oil immersion procedure when refinding outside the refueling area. lens to prevent oil from staining the lens.
5. After using the oil lens, first use a wiping paper dipped in xylene to wipe off the sesame oil on the lens and the sample, and finally wipe it clean with the lens wiping paper.
