Selection of optical parts of binocular biological microscope
Selection of optical parts of binocular biological microscope:
The core of microscope quality is its optical part, which is the eyepiece and objective part. For the objective lens, it can be divided into several levels. The first is an achromatic objective lens. With this objective lens, not all parts of the image are clear, only about 60% of the center of the field of view is clear, and there are certain defects in the outer 40%. Usually we put the observation part in the center of the field of view, so it does not affect the observation. But if you want 100% field of view without defects, you must use a plan achromatic objective lens, relatively speaking, this kind of price will be much higher, generally used in medical and scientific research. There is something in between, which is a half-field achromatic objective. Students can choose the first two levels of the microscope. The general cheaper objectives are ordinary achromatic objectives, and the transaction price is around 8,000 yuan. The better ones are apochromatic objectives or infinite achromatic objectives, with a transaction price of around 10,000 yuan. In the case of Sanmu, the price is several thousand yuan higher. Therefore, it is relatively simple for users to buy eyepieces. It is to see the size of their field of view. It is recommended to use eyepieces with a large field of view. The eyepieces with a large field of view have a larger opening and better visual effects compared to the general. However, under normal circumstances, customers who choose inverted microscopes have more choices.
Binocular biological microscopes are widely used in research institutes such as biology, cytology, histology, and medicinal chemistry. Binocular biological microscopes can perform three routine examinations in medicine and are available for teaching in school laboratories. The binocular biological microscope adopts an electric light source, the illumination can continuously adjust the brightness, and the eyepiece tube can rotate freely at 360 degrees.
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