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显微镜物镜的分类(Classification of microscope objective).doc

显微镜物镜的分类(Classification of microscope objective).doc

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显微镜物镜的分类(Classification of microscope objective)

显微镜物镜的分类(Classification of microscope objective) Classification of objective lenses The objective lens can be divided into a drying objective and an immersion objective according to the conditions of use, wherein the immersion objective can be divided into a water immersion objective lens and an oil immersion objective lens (usually 90 to 100 times magnification). Depending on the magnification, it can be divided into a low magnification objective lens (10 times less), a secondary objective lens (about 20 times) and a high magnification objective lens (40 - 65 times). According to the aberration correction, divided into achromatic lens (lens aberration correction can commonly used, with two colors in the spectrum) and complex (lens, color achromatic objectives can be corrected with three colors in the spectrum of the price is expensive, use less). The objective lens (objective) is the most important component of the optical microscope, the use of light to the object to be examined first imaging, which is directly related and affect the image quality and the optical parameters, is the primary standard to measure the quality of a microscope. The structure of the objective lens is complex, and the manufacture is precise. Because of the correction of the object difference, the metal object barrel is composed of a group of lenses which are fixed at a certain distance and are fixed. The objective of the objective is to focus on the axis. When the mirror is checked, the image should be clearly defined when the objective of the second magnification is converted to another, when the image is clearly observed with a certain magnification of the objective lens. And the axis, that is, in the operation above, the center deviation of the image should also be within a certain range. The quality of the coke and the degree of its axis is an important sign of the quality of the microscope, which is related to the quality of the objective itself and the accuracy of the objective conve

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