China Microscope - Wang Liang: 010-82967128 13910386343 The structure principle, characteristics and application range of stereo microscope

A stereo microscope can also be called a solid microscope or an operation and dissection microscope. It is a visual instrument with a positive stereoscopic effect. The optical structure principle is composed of a common primary objective lens. The two beams after imaging the object are separated by two sets of intermediate objective lenses, also called zoom mirrors, and form a certain angle called the body angle of view, generally 12 degrees - 15 degrees, and then Through the respective eyepiece imaging, its magnification change is obtained by changing the distance between the intermediate mirror groups. With the two-channel optical path, the left and right beams in the binocular tube are not parallel, but have a certain angle, which is left and right. The eye provides an image with a three-dimensional effect. It is essentially two juxtaposed microscopes placed side by side. The optical axes of the two barrels are equivalent to the angle of view formed when people observe an object with binoculars, thereby forming a three-dimensional stereoscopic image. Its characteristics are: large field of view diameter and large depth of focus, which is convenient for observing all layers of the object to be inspected; although the magnification is not as good as that of a conventional microscope, its working distance is very long; it is erect, which is convenient for practical operation, which is due to the eyepiece. The prism below reverses the image. According to the actual use requirements, the current stereo microscope can be equipped with a wide range of accessories, for example, if you want a larger magnification, you can choose more eyepieces and auxiliary objectives with higher magnification, through various digital interfaces and digital cameras, cameras. The electronic eyepiece and image analysis software constitute a digital imaging system connected to the computer for analysis and processing. The illumination system also has reflected light and transmitted light illumination. The light source has a halogen lamp, a ring lamp, a fluorescent lamp, a cold light source and the like. According to the optical principles and characteristics of stereo microscopes, it is widely used in industrial production and scientific research. For example, in the field of biology, medicine for slice operations and microsurgery; in the industry for the observation, assembly, inspection of small parts and integrated circuits.

The disadvantage should be that the angle between the viewfinder and the vertical is slightly different from the actual image.

The main raw materials of Cosmetic Raw Materials are commonly used as matrix raw materials and auxiliary materials. The general base materials for cosmetics are mainly oily materials, including oils, waxes, hydrocarbons, fatty acids and alcohols. Its oily raw material is the most widely used raw material in cosmetics. It plays a role in protecting, moisturizing and softening the skin in skin care products, and plays a stereotyping and beautifying role in hair care products. Auxiliary materials are used to prevent oil, wax, hydrocarbons and other oily components of cosmetics from contacting oxygen in the air, oxidizing, producing peroxides, aldehydes, acids and so on. They are discoloration, rancidity and quality deterioration of cosmetics. Some auxiliary materials need to be added to cosmetics. Auxiliary materials include: