![]() It has been used widely for Laser optics, optical grade UV Fused Silica windows and lenses, mirror blanks and substrates, wedges, optical beamsplitters and filters, prisms, lightpipes, space and aircraft windows, solar cells, high quality coating substrates etc. ![]() Some beneficial characteristics indlude very low thermal expansion coefficient, very good homogeneity with excellent optical properties and exceptional transmittance in the UV range. ![]() Key questions in the selection of your fused silica optics supplier is the complexity of the parts and optical specifications tightness, ability to provide an optical coating on the optics can be critical too.Optical grade Fused Silica is a high purity synthetic amorphous silicon dioxide which is manufactured by flame hydrolysis. Both fused silica and borosilicate glass have excellent chemical stability. The material is rather easy to work with and therefore contrary to Sapphire doesn’t need specific equipment to be cut and polished. Fused silica is a high purity glass made by oxidation of silica in a flame hydrolysis process, whereas borosilicate glass is made by combining boric oxide, silica sand, alumina and soda ash. Most of precision optics suppliers are providing optics made of fused silica. Where to buy fused silica / quartz optical component ? Limitations : Fused silica cannot be diamond turned, so it may not be very recommandable material for aspherical lens. UV optical components are increasingly used in sterilization systems, due to the fused silica good UV transmission a good share of these optical components are made in it.Fused silica wafers are currently in high demand for microwave and millimeter-wave circuits.Key advantages are that the raw material is rather affordable and easy to source, relatively easy to be machined, and highly resistant to chemicals and temperatures (can be used up to 1000☌). Optical elements made from fused silica / quartzįused silica / optical quartz are very commonly used for most of optical components : Please note that normal glass is also mainly made of SiO2 but is not pure SiO2, other chemical elements are also added like NaO2 and other elements. Quartz Glass & Silica Glass refers to respectively Fused Quartz and Fused Silica.Determination of refractive index of silica glass for infrared wavelengths by IR. Fused Quartz : Pure Si02 material made by melting of crystalline quartz grains by electrical furnace or flame fusion. INFO Fused silica (fused quartz) Malitson 1965: n 0.213.71 m.Even it is called UV-FS normally it is the standard. It differs by its high UV-transmittance from natural Fused Silica, molten from crystalline quartz. This differs from all other commercial glasses in which other ingredients are added which change the glasses' optical and physical properties, such as lowering the melt temperature. (amorphous silicon dioxide) is produced synthetically from high purity silicon by flame hydrolysis. Fused quartz, fused silica or quartz glass is a glass consisting of almost pure silica (silicon dioxide, SiO 2) in amorphous (non- crystalline) form. Vitreous Silica, in all its forms, offers a variety of properties such as: Permeability. The finished product is a transparent glass with an ultra-high purity and improved optical transmission. By extension is also used to cover Fused Quartz material. Most customers' needs can be met with two standard materials: FS-UV and FS-IR. Fused silica, commonly referred to as synthetic fused quartz, is produced using high purity silica sand that is manufactured from SiCL 4. Fused Silica : transparent non-crystalline material made of pure Silica by deposition at high temperature.Silica : is pure non-crystalline SiO2 (Silicon Dioxyde), sand is made of silica but is not pure Silica.Quartz : is usually used to describe natural crystalline quartz, by extension is used as a generic term for pure SiO2 (Silicon Dioxyde) crystals & glass.See below definitions about these terms so you will understand them better: Fused silica specificationsīelow table shows the specifications for the common Fused Silica on the market Specificationĭifferences between fused silica and quartzįused Silica, Quartz, Fused Quartz, Quartz Glass, Silica, Silica Glass, all these names are confusing and often not very well defined by their users. Fused silica is an amorphous grade of silica known for its low thermal expansion and thermal shock resistance. It is fully transparent with very good transmission from UV to IR, have a high resistance to water and chemical elements, and having a very low Coefficient of Thermal Extension can resist even better than borosilicate to thermal shock. Quartz / Fused silica is a very interesting material due to the combination of many interesting properties. Fused silica / quartz optical component : a complete guide
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |