How to choose the right microscope for your needs
Microscope is a precision optical instrument, its core technology is optical technology, the quality of the product, the key to look at the optical system (including illumination system, objective lens, etc.), which is the basic principle of the purchase of microscopes. In the imported microscope manufacturers (Germany Zeiss, Germany Leica, Japan Nikon, Japan Olympus) in the quality of good and bad, the user should be rational analysis in the selection process, do not go astray, * and then cause unavoidable economic losses.
First, the imaging quality
We use the microscope is mainly the use of optical imaging principles to obtain microstructure images, and then qualitative and quantitative analysis of the image, so the quality of imaging is a * key indicator. A clear image in the field of metallography we call a sharp image. And to obtain a sharp image must meet the four basic conditions of high contrast, high brightness, good colour reproduction and high resolution. Contrast, brightness, colour reproduction is precisely the user selection is easy to ignore the place, only the blind pursuit of resolution and lead to selection failure. For example, a large domestic steel mill purchased in 2000, a Japanese brand microscope imaging quality is far worse than the 1985 purchase of the German Zeiss microscope, but the objective lens of the numerical aperture is higher than the Zeiss. In fact, the reason is very simple, is that these manufacturers in the manufacture of microscopes only take into account a factor that affects the quality of imaging - resolution, while ignoring other important factors such as contrast, brightness, colour reproduction. At this point the German Zeiss company to do better, they use the ICCS optical system and ** anti-glare technology to make the image of the liner, brightness, colour reproduction of the original markedly improved, so as to obtain * subtle tissue and delicate colours. Only then can accurate image analysis be performed.
II. Mechanical stability
With good imaging quality is not enough, but also over time to maintain a high quality state. This point we call 'mechanical stability' because the microscope is not a low-value consumables, its normal service life should be more than 30 years. In this regard, it is recommended that users focus on the following points: 1, raw materials, 2, manufacturing accuracy, 3, mechanical design, 4, the place of origin (many imported microscope manufacturers have joint ventures in the domestic factory).
Comparison of the above indicators at the same time the conditions of the user is best to bring their own specimens for the 'field trip', there are comparisons to identify. In short, choose a good microscope is not only to buy a high-quality products, but also a far-sighted investment.
