The main factor that determines the performance of Nikon microscopes is the resolution of the microscope, also called resolution or resolution. However, physical quantities such as magnification and sharpness are closely related to the resolution capabilities of Nikon microscopes. The imaging principle of the microscope: We know that microscopes are complex coaxial optical systems. This system is composed of the main imaging elements such as light source, aperture diaphragm, condenser and objective lens. The eyepiece is just an optical component that directly magnifies and projects the object image onto the screen (including the human retina). The light source may be an incoherent light source such as daylight, light, or a coherent light source such as point light. In the 1870s, German scholar E. Abbe laid the foundation of the microscope imaging theory. Modern physical optics uses newer experiments to further clarify the essence of the spectral transformation principle in Abbe's imaging theory (Fourier spectral transformation optics). The key imaging component in the microscope imaging optical path is the objective lens. Countless planes from the light source to the front lens of the objective lens have their corresponding conjugate planes behind the objective lens. However, according to Abbe's theory, the conjugate plane corresponding to the object plane O in the microscope is the image plane O 'and the light source I. The corresponding conjugate plane I,' plane is the most important two in the imaging system. On the plane. If we want to understand the Nikon microscope imaging process, we must study the optical processes that occur on these two pairs of corresponding conjugate planes. Within the range of the opening angle of the incident beam defined by the aperture diaphragm in the microscope, it directly becomes the illumination light source illuminating the specimen through the condenser. The light on the plane of the aperture diaphragm is imaged at or near the back focal plane of the objective lens. Abbe called this image the first imaging in the microscope imaging light path. We cannot ignore the importance of the first imaging quality. First, the aperture diaphragm defines the angle of incidence necessary for the imaging beam. This means that the optimum brightness for viewing objects under the microscope is determined by this. Secondly, the imaging light from different planes of the three-dimensional structure of the specimen is also determined by this. In short, the appropriate contrast of the object image in the Nikon microscope and the sharpness of the object image contour are determined by this. If we insert the specimen into the Nikon microscope imaging light path, then the first imaging system is destroyed. The aperture diaphragm image can no longer be seen in the lens barrel. At this time, the detail of the specimen becomes an illumination light source and is imaged on the retina or screen behind the eyepiece. Abbe called this the second imaging of the microscope. The imaging process of specimen details is not explained by geometric optics. Because the imaging light is refracted, birefringent, diffracted and scattered on this plane, the light intensity distribution is changed by the details of the specimen. On the Fourier spectrum plane, the light information is transformed and projected onto the screen. According to this principle in various optical microscopes, various interference components are used to reflect the details of the specimen into an object image of contrast between dark and light or contrast between dark and light. This is the imaging principle of various microscopes that we will describe in detail later. (Organized by China Educational Equipment Purchasing Network) Dining chair is a common seat in restaurants, bars, cafes and other places for people to use when dining. According to different design styles, materials, functions and uses, dining chairs can be divided into a variety of categories. The following will be a brief introduction to the product classification of dining chairs. Cafe chair,wholesale chair,stackable chair,connected chair Foshan Shengshi Zhihui Technology Co., Ltd. , https://www.zhhotelfurniture.com
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The performance of microscopes in laboratory equipment is affected by several factors