Disposable Surgical Cap,Disposable Bouffant Cap,Surgical Cap With Ties,Blue Surgical Cap Ningbo Carest Medical Instrument Co.,ltd , https://www.carestmed.com
The difference between a stereo microscope and a metallographic microscope
What are the differences between a stereo microscope and a metallographic microscope ? The following will be explained in detail by Shanghai Bayu technical staff:
First, the lighting optical system
1. Metallographic microscopes generally have a special reflected light illumination path (because the observed sample is opaque), and the illumination light passes through the semi-reflex lens and is then irradiated onto the surface of the sample through the objective lens. After reflection, it passes through the objective lens and then to the person. The image is in the eye, so the objective lens replaces the role of the condenser in the Kohler illumination system. In principle, this kind of illumination belongs to coaxial illumination, that is, the illumination light and the reflected light are in the same main light path.
2 , stereo microscope generally uses an external light source, there is a lateral halogen lamp oblique illumination, there are ring LED lighting, but these lighting methods are not coaxial lighting, their illumination light is oblique from the side, and the main optical axis has A certain angle, in principle, is similar to the dark field illumination of a metallographic microscope. In addition, some stereo microscopes also have coaxial illumination sources, but stereoscopic coaxial illumination has certain limitations. If improperly designed, glare will occur, which requires special accessories or lenses to eliminate.
                Volume microscope
Second, the magnification
1. The magnification of the metallographic microscope objective lens is 1.25 times or more and 100 times or less, and the magnification of the eyepiece is between 10X and 20X . Therefore, the total magnification of the metallographic microscope is between 12.5X and 2000 times.
2 , the difference in the magnification of the stereo microscope is quite large, if it is a stereo microscope for general inspection, the multiple is generally between 0.5 times and 100 times. If it is a research-grade microscope, the magnification will also increase the optical quality. Increase it to 200 times to 400 times.
Metallographic microscope
Third, the rack and focus mechanism
1. The metallographic microscope frame is generally large, but because the metallographic microscope is used for high-power inspection, it can be placed in a small sample size, and generally requires a relatively flat surface, which requires polishing and polishing. Except for the inverted metallographic microscope at this point, although the sample preparation is also required, it has almost no limitation on the size of the sample. A good inverted metallographic microscope can place about 10 kg of multiple samples. In addition, the stereoscopic microscope focusing mechanism is a lifting stage (there are also a few upright microscopes and measuring microscopes that are lifted by special accessories), and the inverted metallographic focusing mechanism is a lifting objective.
2 , the size of the stereo microscope frame is generally small, but if combined with the large size of the moving frame, it can check different sizes of samples, including direct inspection of the product on the production line, so it requires very low sample, nor Special preparation is required, as long as the surface of the sample preparation is about flat. Because the stereoscope is lighter, the stereo microscope focuses on lifting the entire optical path.
Through the above introduction, do you know the difference between a stereo microscope and a metallographic microscope? If you have any questions, please feel free to contact us! Shanghai Bashu is a professional supplier of microscopes, which can provide you with high quality microscope products, microscope quotes, microscope usage and other information!
" The difference between stereo microscope and metallographic microscope" is provided by Shanghai Bashu. For more microscope products, please visit: