Introduction to the usage of parallel light path stereo microscope
We are all familiar with parallel light path stereo microscopes, which are commonly used in school laboratories. They can help us see things that are invisible to the human eye and are a practical laboratory instrument. But if you don't use it frequently, you still don't understand its correct usage steps and overall structure. So, in order to facilitate a clearer understanding of the microscope, the editor will explain the usage method, structural diagram, and magnification for everyone.
How to use a microscope
(1) Mirror retrieval and placement
1. Hold the mirror arm with your right hand and hold the mirror base with your left hand.
2. Place the microscope on the experimental platform, slightly to the left (the microscope is placed about 7 centimeters away from the edge of the experimental platform). Install the eyepiece and objective lens.
(2) To light
3. Rotate the converter to align the low magnification objective with the through-hole (maintain a distance of 2 centimeters between the front end of the objective and the stage).
4. Align a larger aperture with the through-hole. Focus your left eye on the eyepiece (open your right eye for future simultaneous drawing). Rotate the reflector to reflect light through the through-hole into the mirror tube. Through the eyepiece, a bright white field of view can be seen.
(3) Observation
5. Place the observed glass slide specimen (also made of thin paper with the word "6" printed on it) on the stage and press it down with a pressure plate clamp. The specimen should be facing the center of the light hole.
6. Rotate the coarse focus screw to slowly lower the lens until the objective lens approaches the slide specimen (keep your eyes on the objective lens to prevent it from touching the slide specimen).
7. Look into the eyepiece with your left eye and rotate the coarse focus screw in the opposite direction to slowly raise the lens until you can see the object clearly. Slightly rotate the fine focus spiral again to make the visible image clearer.
8. The use of high-power objective: Before using a high-power objective, it is necessary to first use a low-power objective to find the observed object, adjust it to the center of the field of view, and then rotate the converter to replace the high-power objective. After the high-power mirror is replaced, the brightness in the field of vision will become dark. Therefore, generally select a larger aperture and use the concave surface of the reflector, and then adjust the fine focusing spiral. The number of objects viewed decreases, but the volume increases.
(4) Organize
8. After the experiment, wipe the surface of the microscope clean. Rotate the converter, tilt the two objective lenses to both sides, and slowly lower the lens barrel while placing the reflector vertically. Put the parallel light path stereo microscope into the mirror box and send it back to its original position.
