The air shower is a common facility for optical film clean rooms. Optical films are mainly composed of thin layered media. A class of optical media materials that transmit light through an interface. Today, optical films are widely used in the fields of optics and optoelectronics to manufacture various optical instruments. The characteristics of the optical film are: the surface is smooth, and the interface between the layers is geometrically divided. The refractive index of the film layer may change at the interface, but is continuous in the film layer, and may be a transparent medium or an optical film absorption medium; it may be normal or uniform. . The actual application of the film is much more complicated than the ideal film. This is because, at the time of preparation, the optical properties and physical properties of the film deviate from the bulk material, and the surface and interface are rough, resulting in diffuse scattering of the light beam, and interpenetration between the film layers forms a diffusion interface. Due to the growth, structure, stress and the like of the film layer, the anisotropy of the film is formed, and the film layer has a complicated time effect.
The optical film is classified into a reflective film, an antireflection film, a filter film, an optical protective film, a polarizing film, a spectroscopic film, and a phase film according to applications. The first four are commonly used. Optical reflective films are used to increase specular reflectance and are commonly used to fabricate reflective, refractive, and resonant cavity devices. An optical antireflection film is deposited on the surface of the optical element to reduce surface reflection and increase optical system transmission, also known as anti-reflection film. Optical filter films are used for spectral or other optical segmentation, and they are numerous and complex in structure. The optical protective film is deposited on the surface of a metal or other soft, erosive material or film to increase its strength or stability and to improve optical properties. Common to zui is a metal mirrored protective film.
The main reason why the air shower is used in the optical film production workshop is that the optical film production workshop has high requirements for cleanliness, and the optical film cannot have a little dust. Into the optical film production workshop, each person must replace the clothes, hats, shoes and masks worn by the workers at work. We were wrapped up tightly and only one pair of eyes were exposed. To go through a "wind shower" to dust, everyone is blown out by the air shower to clean the air and "bath" again. Air shower room is one of the necessary purification equipment for employees to enter clean room and non-clean room. It can greatly reduce the pollution problems caused by employees entering and leaving the clean room, and it will play a certain role in the management of optical film production workshop. effect. In other specific clean workshops, a number of 100-stage ultra-clean workbench production lines are also used.

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