Talking about the Differences Between Several Commonly Used Microscopes
ONE, digital microscope
Digital microscopes can produce upright three-dimensional images when observing objects. It has a strong stereoscopic effect, clear and wide imaging, and has a long working distance, and it is a conventional microscope with a very wide range of applications. It is easy to operate, intuitive, and has high verification efficiency.
Digital microscopes are suitable for inspection of electronic industry production lines, verification of printed circuit boards, verification of soldering defects (printing misalignment, edge collapse, etc.) in printed circuit components, verification of single-board PCs, verification of vacuum fluorescent display VFD, and It can identify printed grids, calligraphy and paintings, etc., and it can enlarge the image of the object and display it on the computer screen, and can save, enlarge and print the picture. Equipped with measurement software, various data can be measured.
Six major differences between digital microscopes and ordinary microscopes:
1. With the function of microscopic photography, the observed microscopic effects are saved and formed into graphic files, which can be circulated to relevant departments; ordinary microscopes can only be observed through the eyepiece, and cannot be used for microscopic photography.
2. Connected with the computer, multiple people can observe at the same time; ordinary microscopes can only be observed by one person.
3. Previewing on the computer screen can reduce eye fatigue; ordinary microscopes need to observe through the eyepiece all the time, which is easy to cause excessive eye fatigue.
4. The imaging device of the digital microscope can have functions such as measurement, printing of graphic reports, and video recording; ordinary microscopes can only perform microscopic observation.
5. Digital microscope is a new era in the development of modern scientific instruments and meters, and has many functions that ordinary microscopes do not have. It has developed rapidly in scientific research, product testing, teaching demonstration, archaeology, etc.
TWO, metallographic microscope
Metallography mainly refers to the branch of material science that analyzes and characterizes the microstructure, low-magnification structure and fracture structure of materials with the help of optical (metallographic) microscopes and stereo microscopes. It includes both the imaging of material microstructure and its qualitative, Quantitative characterization, also covering necessary sample preparation, preparation and sampling methods. It mainly reflects and characterizes the phase and tissue composition of the constituent materials, grains (including possible subgrains), non-metallic inclusions and even some crystal defects (such as dislocations), the number, shape, size, distribution, Orientation, spatial arrangement, etc.
The metallographic microscope is used for structural analysis of PCB circuit board sampling section circuit and image analysis of liquid crystal display circuit and liquid crystal ball. It has: Observation of high-definition image observation and data measurement of the end surface copper and hole copper thickness of the circuit board sampling piece, green oil and white oil observation data measurement, and the software has image freezing, data measurement, and report output functions. The liquid crystal display can be observed: the image of OLB and liquid crystal ball and gold finger pressing form is in DIC and offset distance.
THREE, biological microscope
Biological microscopes are used by medical and health units, colleges and universities, and research institutes to observe microorganisms, cells, bacteria, tissue culture, suspensions, sediments, etc., and can continuously observe the process of cells, bacteria, etc. multiplying and dividing in the culture medium. It is widely used in cytology, parasitology, oncology, immunology, genetic engineering, industrial microbiology, botany and other fields. Important Optical Technical Parameters of Microscopes During microscopic inspection, people always hope to have clear and bright ideal images. The purpose and the actual situation to coordinate the relationship between the parameters. Only in this way can we give full play to the proper performance of the microscope and obtain satisfactory microscopic inspection results.
The optical technical parameters of the microscope include: numerical aperture, resolution, magnification, depth of focus, width of field of view, poor coverage, working distance, etc. These parameters are not all the higher the better, they are interrelated and restrict each other, when using, the relationship between the parameters should be coordinated according to the purpose of the microscope inspection and the actual situation, but the resolution should prevail .
FOUR, stereo microscope
Stereo microscope, also known as "solid microscope", "stereo microscope" or "operation and dissecting microscope", is a microscope with a three-dimensional sense of positive image, which is widely used in material macroscopic surface observation, failure analysis, fracture analysis, etc. industrial field. It is a visual instrument with three-dimensional sense of positive image, which is widely used in various departments of biology, medicine, agriculture, forestry, industry and marine biology.
Field of application: Stereo microscopes are also the most widely used, and the main uses are as follows:
1. Research on zoology, botany, entomology, histology, mineralogy, archaeology, geology and dermatology, etc.
2. In the textile industry, it is used for the inspection of raw materials and cotton wool fabrics.
3. In the electronics industry, it is used as an operating tool for spot welding and inspection of transistors.
Stereo microscope application: PCB circuit board, SMT, PFC flexible circuit board surface feature image defect observation and backlight inspection. Features: Continuously adjustable optical power, eyepiece: 20X/10X reticle can be purchased separately.
4. Inspection of surface phenomena such as crack formation of various materials, pore shape corrosion, etc.
5. When manufacturing small precision parts, it is used for the device of machine tools, observation of working process, inspection of precision parts and assembly tools.
6. The surface quality of lenses, prisms or other transparent substances, and the quality inspection of precision scales.
7. To judge the authenticity of documents and coins.
8. Widely used in textile products, chemical industry, plastic products, electronics manufacturing, machinery manufacturing, pharmaceutical manufacturing, food processing, printing industry, colleges and universities, archaeological research and many other fields.
