The trinocular microscope consists of three optical systems: three systems: long tube optics, universal infinity collimation optics, and universal infinity dual chromatic aberration correction optics. Trinocular microscope is very versatile, it can be used in school and experimental teaching, home and it is mainly used for hospital inspection and teaching.
With the continuous development of modern social science and technology and biotechnology, the microscope has become an indispensable research tool in modern human science and technology. Through the microscope, human beings can understand the microscopic world of matter, and it has occupied a very important position in modern scientific research. Microscopy technology has been used for many years, and with the continuous advancement of science and technology, the variety of microscopes has gradually increased, and various functions have been continuously improved.
Microscopes should be understood when everyone is studying biology. There are many types of biological microscopes, including high-power microscopes, optical microscopes, and electron microscopes. Then when we buy, we must be able to buy a Wumart cheap microscope. If it is not purchased by a professional, it may not be recognized and the quality may not be observed. Then the problem comes. How to recognize it?
A general microscope is an optical instrument composed of a lens or a combination of several lenses, and it is a sign that humans have entered the atomic age. It is mainly used to amplify tiny objects into the human eye. Another name of wireless microscope is wireless digital microscope or portable microscope and wireless handheld microscope; it is characterized by compactness, portability and wireless transmission. The most notable is the application of Bluetooth transmission technology, which is a new application integrated on the microscope.
When buying a microscope online, you must first look at the type of microscope you are buying, and then look at the quality of the microscope. It is best to talk to the store about some details about this microscope to avoid buying the wrong one when you buy it. Be careful, buy the one that has no reason to return within seven days.
High-end microscopes have been used relatively extensively at present. Such microscopes include stereo microscopes, metallographic microscopes, interference microscopes, and biological microscopes. Although the structure and function of these microscopes each have their own characteristics and advantages, the basic principles of these microscopes are very different. The main components of an optical microscope are lenses assembled at both ends of the lens barrel. Each group of lenses is equivalent to a convex lens.
Human thinking is really infinite. What we can observe with the naked eye can no longer satisfy us! Therefore, people are constantly researching new things in order to observe things that cannot be seen with the naked eye. Over time, our microscope appeared! However, it is not something we usually use, and not everyone will buy it at home, which makes us very unfamiliar with the use of microscopes!
I have only seen the microscope in books before. I carefully put my other hand under the microscope and took a closer look. It shocked me. I noticed that my hands were covered with black dots. Teacher Jiang said to me with a smile: "The little dots you see here are horrible bacteria that can easily make people sick. Usually we can't see them with the naked eye, so we must pay special attention to hygiene before meals. Develop the old habit of washing your hands after meals. "
Professional microscope stages have a variety of microscope stages designed for specific purposes. These stages include equipped with auxiliary equipment for manipulating the sample during the observation process, the measurement system, popularize the stage at a very small distance, allow the measurement of many specimen angles, and perform countless unique functions to allow accurate measuring. There are two common specialized microscope stages, one is an inverted microscope stage, and the other is a general-purpose microscope stage.
Everyone knows the microscope, but there are many types of microscopes. If you want to distinguish them by the principle of imaging, there are two types of optical microscopes and electron microscopes. In the 19th century, the British scientist Hook invented the world's first microscope, which he used to observe the structure of plant cells. But why did he have to discover the cells and observe them and then let people know?
A small microscope is also a portable microscope. As the name implies, it is more compact and lighter than ordinary microscopes. Ordinary microscopes should have everything else, and you can also connect your own mobile device at any time to facilitate measurement and recording. It is an indispensable device for scientific researchers to travel at home. He clearly shows things that cannot be seen by the human eye, so that we understand the world of microorganisms more clearly.
In fact, the use of a microscope is not very complicated. In fact, it can be summarized in one sentence, but why do people who just start learning can't always learn? It's because this stuff tests our practical skills rather than theoretical skills.
Generally, it is an instrument microscope. This type of microscope is very suitable for junior high school students and high school students. Like a camera, its price is expensive on the lens. It can be found that its field of view is wide, and astigmatism rarely occurs.
According to the imaging principle: optical microscope, electron microscope. By type: biological microscope, metallographic microscope, stereo microscope (dissection microscope), polarizing microscope, phase contrast microscope, fluorescence microscope, tool measurement microscope. According to structure and application: transmission electron microscope, scanning electron microscope, reflection electron microscope and emission electron microscope.
A microscope, as its name implies, is an optical instrument that magnifies tiny things to the naked eye. There are two main types, optical and electronic. Light microscopes can magnify objects up to 2000 times, and you can see cells, but you can't see the internal structure of the cells; the magnification of the electron microscope is 3 million, and you can see large molecules. Depending on the classification of the microscope, its price varies. The price of general electron microscope is higher than that of optical microscope.
Polarized light microscope, optical microscope, electron microscope, digital microscope. There are also scanning tunneling microscopes, confocal microscopes, dissection microscopes, ultrasonic microscopes, polarizing microscopes, fluorescence microscopes, video microscopes, and dark-field microscopes.
Adjust the brightness. Temporary loading is fixed on the stage. Align the low magnification objective lens with the clear hole, and adjust the lens barrel from top to bottom with a coarse quasi-focus helix. Observe the change of visual field through the eyepiece of the left eye, adjust the coarse quasi-focus helix, and slowly move the lens barrel until the visual field is clear. If there is no object to be observed in the field of vision, you can move the film.
Hold the mirror arm with your hand and support the mirror base with your left hand. Place the microscope on the test bench, slightly to the left, and install the eyepiece and objective lens. The second is to align the low-magnification objective lens with the light hole.
A microscope is an optical instrument composed of a lens or a combination of several lenses, and it is a sign that humans have entered the atomic age. It is mainly used to magnify tiny objects into the human eye.
Slightly left on the bench. Alignment: Turn the converter to align the low magnification objective with the clear aperture. Align the larger aperture with the clear aperture. The left eye looks into the eyepiece and turns the reflector to reflect the light into the lens barrel through the light hole. Place the slide specimen on the stage directly opposite the center of the clear aperture. Adjust the focus until you see the image clearly.
Electron microscopes with different functions and structures have different prices. Generally speaking, the basic price is more than 3,000.
The long-distance high-power short-tube microscope includes a collimating lens and an eyepiece, and a microlens array type angular beam expander and a focusing lens are sequentially placed between the two. It is better to meet the following conditions: the angle beam expander is close to the collimator lens, and the focusing lens is close to the angle beam expander; the aperture of the angle beam expander is larger than the focus lens aperture.
The key point of confocal microscopy technology is that only one point (focus) in space is imaged at a time, and then a two-dimensional or three-dimensional image of the specimen is formed by computer-controlled point-by-point scanning. In this process, light signals from out of focus will not interfere with the image, which greatly improves the clarity and detail resolution of microscopic images.
Some parasites hidden in the body can never be washed away. For example, forehead lice, they can still be alive after a meal, and they can continue to mate and lay eggs on the scalp and other places. Although these horrible creatures cannot be seen with the naked eye, when placed under a microscope, you can see that the fat and large foreheads are still struggling.
Mineralogy microscope, also known as reflection polarized light microscope or ore microscope, is the basic tool for mineralogy research work. The mineralogy microscope is actually composed of a polarizing microscope and a "vertical illumination system".
Take the glass ball of the spotlight flashlight. Select a 2mm thick cardboard and cut it into 3 pieces of 50 × 50mm. Make a small hole in the center, and it is better to insert the glass ball exactly. Use adhesive to stick three pieces of cardboard. Choose two pieces of glass with a width of 50 mm and a length of 180 mm and 175 mm. Stick 4 pieces of glass with adhesive tape. Wrap it from top to bottom with 145 mm.
The objective lens is turned directly below the lens barrel, about 1 cm from the stage. Raise the condenser to the highest position and the aperture to the maximum. While observing from the eyepiece, turn the reflector to reflect the light from the light source to the condenser; Just below the mirror, slowly lower the lens barrel so that the lens is about 0.3 cm from the glass slide, close the aperture, and lower the condenser.
Alignment: Turn the low power lens below the lens barrel to align with the lens barrel. Turn the reflector to the brightest field of view. Use of the objective lens and adjustment of the light: When observing the specimen, use a low-magnification objective lens first. The field of view is larger and the specimen is easier to detect, but the smaller object is not easy to observe its structure. If the object cannot be accurately identified, use a high-power lens for observation.
Stereo microscope: used in various departments of biology, medicine, agriculture, forestry, industry and marine biology. Measuring microscope: Make precise measurement of the length and angle of the workpiece. Metallographic microscope: It is mainly used to identify and analyze the internal structure of metal.
Biological microscopes or stereo microscopes can be purchased in the stores attached to the metrology institute. Generally, there are places where instruments and instruments are relatively concentrated, such as the SEG market or the chemical reagent store. This is a traditional dealer network. More professional microscopes are operated by the company, and specific problems need to be analyzed.
The slit lamp microscope is an instrument mainly composed of a slit lamp and a microscope. It uses the "Dindal" principle to transmit a light source through a summer wind to form a "light knife". It can not only see the lesions on the surface of the eye, but also An abnormality deep into the eyeball is usually used to check the conjunctiva, eyelid, cornea, lens, sclera, pupil, anterior chamber and part of the vitreous.
In simple terms, there are 7 major steps in using a microscope, taking the lens-placing-facing-placing the film-focusing-observation-closing.
Measure various molded parts. Measure the large diameter, middle diameter, small diameter, half-angle and pitch of the thread of the plug gauge, screw, worm and other parts in the external thread. Measure tooth profile, profile angle and lead of gear hob. Measure the degree of the position of the hole in the drilling die and orifice plate.
Polarized microscope, the price can be about 5,000 yuan to 20,000 yuan according to different functions. For optical microscopes, the price is generally between 200 yuan and 1,000 yuan. The electron microscope is not expensive, and it is similar to the optical microscope.
Before use, observe through low and high magnification lenses, and move the part to be enlarged to the center of the visual field. Raise the light collector to the highest position and open the aperture to the maximum. When changing the oil lens, look at the distance between the lens and the glass horizontally from the side. Observe the eyepiece with your left eye and slowly turn the fine adjuster until the image is clear.
Protect from moisture. dust-proof. Anti-corrosion. heat proof. The microscope must not touch sharp objects. Unrelated personnel should not use the microscope at will.
Store in a dry room, away from walls, away from the ground, and away from sources of humidity. Put 1-2 bags of silica gel desiccant in the box. Keep it clean to prevent dust and sand from entering the machinery. Do not store with corrosive liquids such as sulfuric acid, hydrochloric acid, and strong alkali. Protect from heat and avoid lens opening and falling due to thermal expansion and contraction. Do not touch sharp objects during storage.
Mini waterproof electron microscope: This microscope is only 5mm and has a lamp on the front to take pictures. Handheld electronic digital microscope: exquisite and compact shape, easy to carry around. Kengo 120M portable high power electron microscope: It is a high power microscope that can be easily taken outdoors. Xing Trang electron microscope: suitable for field observation.
When using the mirror, you need to hold the arm with your right hand and the left-hand bracket, and you cannot take it with one hand. Handle with care when moving. Do not place the microscope on the edge of the bench. Keep the microscope clean. If the mirror surface is stained, wipe it off with lens paper immediately. When placing the slide specimen, aim at the center of the clear hole, and do not place it in the opposite direction. After use, restore the microscope and return to the mirror box.
The teaching microscope is more useful for children to see microscopic organisms. Many children are still very interested in the microscopic world, and see small things. They are enlarged, colored, and moving. This is very interesting and also increases the knowledge of children .
At present, there are mainly domestic and imported microscopes on the market. Generally speaking, the price gap is several times to ten times. Now let ’s learn how to buy a microscope?