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Protective glasses include several types of glasses

by:LASERRPAIR     2020-02-20
In industrial processing, it often causes damage to the eyes. For example, welding, electroplating, cutting and breaking will cause threats to the eyes. At this time, protective glasses are required. Protective glasses are also called labor protection glasses. The main purpose is to Protect your eyes in a variety of scenarios. Classification of protective glasses: ? The protective glasses are composed of a lens and a frame. According to the lens characteristics of protective glasses, they can be divided into safety goggles and light-shielding goggles, as well as anti-laser, anti-microwave and anti-x-ray goggles. ? Safety goggles ? Glasses to protect the eyes from harmful substances such as sand, metal chips, chemicals, smoke and dust. The lenses are made of tempered glass, plexiglass or composite materials. ? 2. Shading goggles ? Includes welding goggles and furnace goggles. It is required that the lens can absorb or reflect visible strong light, ultraviolet light and infrared light. ? 3. Laser-proof goggles ? According to the principle of anti-laser, it can be divided into reflective anti-laser goggles, which uses a translucent reflective dielectric film plated on the lens to reflect the incident laser light for protection purposes. Absorptive anti-laser goggles use the translucent absorption medium film on the lens to absorb the incident laser light to achieve the purpose of protection. Such goggles are usually composed of multiple layers of absorbing membranes to improve protection performance. Reflective-absorptive anti-laser goggles are composed of two types of dielectric diaphragms, reflective and absorptive, and have the advantages of a wider range of protective bands and less reduced visibility. Explosion-proof laser goggles are made by adding a special thin layer of explosives (such as aluminum nitride selected from polyvinyl alcohol) to the lens. When the intensity of the incident laser reaches a predetermined allowable value, it can quickly detonate and change color to Shield the laser light from entering your eyes. ? 4. Microwave-proof goggles ? The lens contains a layer of tin dioxide film with good electrical conductivity, which can absorb and reflect microwaves. A plastic frame inlaid with a fine copper wire of 65 to 85 mesh / cm2 is used as a lens frame, which can absorb microwaves incident from the side. ? 5.X-ray protective goggles ? The lens is leaded glass and can block x-ray transmission. ? 6. Choice of protective glasses ? There are many types of protective glasses to choose from, including dust-proof glasses, impact-resistant glasses, chemical-resistant glasses, and radiation-resistant glasses. The first three types of glasses appear to be colorless glasses, but in fact, due to different protective effects, the characteristics of the lenses are significantly different. ? Some workers engaged in industrial production need to wear glasses for operation. They are not worn for decoration and fashion, but to protect the eyes from harmful factors. Therefore, these glasses are called safety glasses. ? Workers engaged in electric welding, gas welding, steelmaking and glass blowing should wear anti-arc radiation glasses. However, the color of the lenses of the arc-proof radiation glasses is dark or light, which is designed according to different requirements. The selection should be appropriately selected according to the intensity of the arc light during the operation. The intensity of the arc light and the color should be deep; on the contrary, light-colored lenses should be selected. If you wear light-colored protective glasses with strong arc light, part of the infrared rays will stimulate and damage your eyes through the lenses, and you will suffer from occupational cataracts in the long term; on the other hand, if you have weak arc light and wear dark safety protective glasses for a long time, your vision will be greatly reduced. ? Therefore, every worker who needs to wear protective glasses should understand the harmful factors of his working environment, wear appropriate safety protective glasses, and don't wear them all. ? Dust-proof glasses are used in dusty environments, and the general lens fastness requirements are not high. Regardless of the eye mask type or flat lens type, ordinary flat glass lenses are used. The anti-impact glasses are used to prevent small particles from flying out from penetrating the eyes. The lenses are required to be impact-resistant. For example, lathes, sanders, and stonemakers should wear anti-impact glasses. If these workers wear general dust-proof glasses, then Iron sand and crushed stone are broken when they hit the glasses, and the eyes will be more damaged. The lenses of chemical-resistant glasses are resistant to acids and alkalis, and corrosive, which is not available in other glasses.
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