According to their imaging principles, optical microscopes can be divided into:
① Geometric optical microscope: including biological microscope, falling light microscope, inverted microscope, metallographic microscope, dark field microscope, etc.
② Physical optical microscope: including phase contrast microscope, polarization microscope, interference microscope, phase contrast polarization microscope, phase contrast interference microscope, phase contrast fluorescence microscope, etc.
③ Information conversion microscopes: including fluorescence microscopes, microspectrometers, image analysis microscopes, acoustic microscopes, photographic microscopes, television microscopes, etc.
With the continuous development of micro optics theory and technology, near-field optical microscopes have emerged that break through the resolution limit of traditional optical microscopes, extending the perspective of optical microscopy analysis to the nanoscale world.
In the field of materials science, a large number of materials or raw materials used in the production of materials are composed of various crystals. The crystal phase composition of different materials directly affects their structure and properties; The crystal phase composition and microstructure of the raw materials used in production also directly affect the production process and product performance. Therefore, for the evaluation of the performance and quality of various materials and their raw materials, in addition to considering their chemical composition, it is also necessary to consider their crystal phase composition and microstructure. The so-called microstructure refers to the morphology, size, distribution, and interrelationships between the crystal phases that make up the material.
The use of optical microscopy analysis technology for phase analysis is to study the phase composition and microstructure of materials and their raw materials, and to study the relationship between the process conditions and product performance that form these phase structures.
