2025-01-03
Optical coatings are ubiquitous in our lives, from precision optical devices and display equipment to everyday applications of optical films. For example, the glasses we wear, digital cameras, various household appliances, and even the anti-counterfeiting technology on banknotes can all be considered extensions of optical film technology applications.
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Anti-fog film is a type of film that prevents fog from forming on the surface of objects. It is primarily made from a special polymer material that has a certain degree of transparency and elasticity. The principle of anti-fog film is based on physical principles, as it can alter the distribution of water molecules on the surface of the object.
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The plano-convex lens is probably the most widely used type of lens in laboratories, and its popularity stems from its applications in both processing and testing assembly. During processing, one flat surface can serve as a reference for machining; during testing and assembly, one flat surface can transfer the angular reference to the structural reference. In fact, this consideration is also taken into account during optical design, which is why plano-convex lenses are one of the most common lens forms available on the shelf.
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2025-01-03
In all optical manufacturing, the first step is to select the appropriate optical materials. Important optical parameters of optical materials, such as refractive index, Abbe number, transmittance, reflectance, etc., as well as physical parameters like hardness, bubble content, deformation, and even temperature and thermal expansion coefficient, are all important components in the material selection process.
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1. Optical processing is generally divided into two types: thermal processing and cold processing. Thermal processing refers to methods such as hot pressing, including the processing of aspheric surfaces and LED lens manufacturing. Cold processing mainly utilizes traditional physical grinding methods, and currently, most spherical lenses fall under cold processing.
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