◆According to application: optical media materials, optical fibers, optical films and other optical materials. ◆Optical medium materials refer to materials that transmit light, so they can also be called transmission materials. The incident light will change its direction, phase or polarization state after being refracted and reflected by the optical medium material. It can also change its intensity and spectral composition through absorption or scattering by the optical medium material. Therefore, devices such as lenses, prisms, mirrors, polarizers, windows, optical fibers and optical films can be made. Specially sintered ceramics can be transparent to infrared rays, and some ceramics are also transparent to visible light. ◆Optical fiber is a new type of information and energy transmission material. ◆Optical film is a type of thin film material that is attached to the surface of optical devices to improve or realize the optical performance of the device. It is widely used in many aspects. ◆Other optical materials: including luminescent materials, coloring materials, laser materials, and optical information storage, display, processing materials, etc., which play a very important role in the field of modern optics.

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