The optical coating is composed of thin layered media. It is a kind of optical medium material that transmits light beam through the interface. It involves the reflection, transmission (refraction) and polarization characteristics of the thin and uniform dielectric film attached to the surface of optical devices during the propagation path of light, In order to achieve the special forms of light, such as the total transmission of light, the total reflection of light, or the polarization separation, in one or more wave bands we want.
Optical film is everywhere in our life, from precision and optical equipment, display equipment to the application of optical film in daily life, for example, glasses, digital cameras, various household appliances, beauty instruments, multi-band detection instruments, glare flashlights, stage lighting, face recognition attendance meters, optical instruments, optical fiber lighting, metal halide lamp insulation, and cold light display cabinets. Biological detector, digital imaging instrument, laser control system, optical communication instrument or anti-counterfeiting technology on banknote can all be called the extension of optical film technology application. Without optical thin film technology as the basis for development, modern optoelectronics, communication or laser technology will not be able to make progress, which also shows the importance of research and development of optical thin film technology.
Optical thin film refers to the preparation or coating of one or more layers of dielectric film or metal film or a combination of these two kinds of films on optical elements or substrates to change the transmission characteristics of light waves, including light transmission, reflection, absorption, scattering, polarization and phase change. Reflective film, antireflective film, polarizing film, interference filter and spectroscope, etc., so through targeted design, the transmittance and reflectivity of the surface of different wave band components can be adjusted, and the light of different polarization planes can also have different characteristics, which is suitable for various industrial applications.
Generally speaking, the production methods of optical films are mainly divided into dry process and wet process. The so-called dry type means that no liquid appears in the whole processing process. For example, vacuum evaporation is to heat solid raw materials with electric energy in a vacuum environment, and then attach them to the surface of a solid substrate after sublimation into gas to complete the coating process. The gold, silver or metallic packaging film used for decoration in daily life is the product made by dry coating. However, considering the actual mass production, the application range of dry coating is smaller than that of wet coating. The general practice of wet coating is to mix various functional components into liquid coatings, and then coat them on the substrate in different processing methods, and then dry and solidify the liquid coatings to make products.
The main product fields produced by Hanzhong Borisun Optics Co., Ltd. include: optical fiber communication filter, narrow-band filter, band-pass filter, short-wave filter, high-precision mirror, biometric identification filter, infra-red filter, medical instrument filter, enzyme scale filter and optical lens, optical prism, spherical mirror aspherical mirror and other optical lens processing coating. The products are widely used in: optical fiber communication, industrial laser, automation equipment, semiconductor production, micro-measurement system, building surveying and mapping, biometric identification, medical equipment, security monitoring, beauty instruments, stage lighting, high-energy laser equipment, equipment, infrared imaging, visual light source, biochemical analyzer, enzyme marker, fingerprint recognition, iris recognition, micro-projection and imaging system and other fields.
