Waterproof agents, especially ultra-hard waterproof agents, are an important coating material in the optical coating industry. They are mainly applied to the surfaces of eyeglass lenses and optical lenses to protect the lenses. This type of agent is a new generation of coating material developed based on waterproof agents, featuring good hydrophobicity (water resistance), oil resistance, and abrasion resistance.

Zinc sulfide is an inorganic compound with the chemical formula ZnS. It is stable in dry air but gradually oxidizes to zinc sulfate in humid air. Zinc sulfide is insoluble in water but easily soluble in acids. The crystals of zinc sulfide are white and solid, with a slight irritating odor. Its melting point is 1700°C, and its density is approximately 4.09 g/cm³. Zinc sulfide has broad application prospects and significant value in optical coatings.

Zirconium-titanium mixture is a composite material made up of two metal elements, zirconium (Zr) and titanium (Ti), formed into granular materials through specific processes. Zirconium-titanium mixtures play an important role in optical coatings, as they can enhance optical performance, improve coating uniformity, increase the stability and durability of coating materials, and expand application fields. These characteristics make zirconium-titanium granules one of the important materials for preparing high-performance optical coatings.

Magnesium fluoride (chemical formula: MgF2) is a colorless crystal that is soluble in nitric acid, slightly soluble in dilute acids, but difficult to dissolve in water and alcohol. The melting point of nano magnesium fluoride is 1248°C, and its boiling point is 2260°C. It has a wide range of applications in various fields, mainly including aerospace, automotive, electronics, and construction.

ITO is a composite material made of indium oxide and tin oxide. ITO has a range of excellent electrical, optical, and chemical properties, making it widely used in various fields. Its main characteristics include high electrical conductivity and optical transparency. Additionally, ITO also has a high specific surface area, hardness, and good conductivity, which has garnered significant attention in the field of optical coatings.

The chemical formula of tantalum pentoxide particles is Ta2O5, with a purity typically reaching 99.99%. Its density is 8.2 g/cm³, and its melting point is 1800°C. Tantalum pentoxide (Ta₂O₅) plays a key role in optical coatings, and its excellent optical and physical properties make it an ideal material for high-performance optical films.

Titanium pentoxide is a blue-black solid with a metallic luster, a density ranging from 4.29 g/cm³ to 4.57 g/cm³, and an oxygen content of 62.3% to 64.3% (by atoms). It belongs to the orthorhombic crystal system, with a lattice constant of α = 0.3747 nm and a melting point of 2180°C. Titanium pentoxide (Ti3O5) plays a crucial role in optical coatings, and its excellent optical, physical, and chemical properties make it an ideal material in the field of optical coatings.

Alumina trioxide particles can be used as components of films, and by incorporating them into the films through specific processes, the performance of the films can be altered.

Titanium monoxide (TiO) is a yellowish powdery inorganic compound that belongs to the category of basic oxides and strong reducing agents. Its chemical properties are somewhat unstable; it is insoluble in water but can dissolve in dilute hydrochloric acid and sulfuric acid, partially oxidizing to trivalent titanium ions and generating hydrogen gas. The physical properties of titanium monoxide include a density of 4.95 g/cm³, a melting point of 1700°C, and a boiling point greater than 3000°C. When heated in air to 800°C, it oxidizes to titanium dioxide.

Titanium dioxide particles are tiny particles composed of titanium dioxide (TiO2) that come in various shapes and sizes, such as spherical, rod-like, and flaky. Titanium dioxide particles have wide applications in multiple fields, including materials science, chemical engineering, environmental engineering, and biomedicine.

Silicon dioxide (SiO₂) is an inorganic compound with the chemical formula SiO₂, composed of silicon and oxygen atoms. In nature, silicon dioxide exists in various forms, including crystalline and amorphous states. Crystalline silicon dioxide has a regular crystal structure and is commonly used in the manufacture of optical instruments, while amorphous silicon dioxide lacks a regular crystal structure. Silicon dioxide has multiple applications in industry and daily life. It can be used to produce quartz glass, optical instruments, refractory materials, optical fibers, and more. Additionally, silicon dioxide is also used in the production of ordinary glass, chemical vessels, ceramics, and optical films.

Zirconia has good thermochemical stability, acid and alkali corrosion resistance, and high-temperature conductivity. The melting point of zirconia is 2397°C, and the boiling point is 4275°C, exhibiting excellent conductivity at high temperatures. These properties make zirconia widely used in various industrial and technological fields, such as electronic ceramics, optical coatings, lithium batteries, refractory materials, and surface coatings.