Classification according to schott optical glass nomenclature. In most cases, it is also recommended to match the i. Fused silica is a synthetic material fused from various chemicals in a very controlled environment. The properties of fused silica include two common variations. Uv fused silica windows feature low distortion, excellent parallelism, low bulk scattering, and fine surface quality. Normal varieties contain water which gives strong absortion in the ir. Measured optical constants of fused silica sio 2 glass 1. Intermediate polar deactivation for injection solvents such as acetone, methylene chloride dichloromethane, and. Tempered safety flat glass used mainly as architecture glass curtain wall, automotive industry and so on. Production and properties of fused silica wafers fused silica or fused quartz is the amorphous phase of quartz sio 2 in contrast to e. Fused quartz is manufactured from the melting and refusing of crushed natural crystalline quartz. Although the terms fused quartz and fused silica are used interchangeably, the optical and. Fused silica minimizes focus shift while providing high power density.
Glass codes 7979, 7980, and 8655 are high purity noncrystalline silica. Nonpolar deactivation for injection solvents such as alkanes, carbon disulfide, and ethers. Dont miss out on key insights, best practices, and news from zemax. Fused silica is used for viewing windows, being transparent to.
Materials designed for their transmission or absorption properties. Custom lens designed with zemax and bk7g18 schott radhard glass. Both hydrous and anhydrous low oh content quartz with. Unless specifically requested, schott optical glass will be delivered in refractive indexabbe number step 33 with a standard test report. Type i is produced by induction melting natural quartz in a vacuum or an inert atmosphere. Nfk51a optical glass nfk51a is a popular optical glass produced by schott ag. Cost, climate resistance, model glass, glass substitution template. Com 15 specifications custom sizes and fused silica uv gradesio2 specifications are available optical refractive index at n e 1. Hpfs fused silica glasses are known throughout the industry for their consistent, repeatable performance. Schott mlq1 exhibits high homogeneity and has no striations in one spatial direction. This tubing is untreated, for general purpose use where high inertness is not necessary. Refractive index of schott multiple purpose d263teco. The following is a list of optical materials that we have worked in the past. Traditionally optical glasses in the range of n d 50 are called crown glasses, the other ones as flint glasses.
Our fused silica wafers ahve a very low thermal expansion coefficient, very good homogeneity including excellent optical properties and exceptional transmittance in the uv range. Optical grade fused quartz is suitable for wavelength 2202500nm uv grade fused silica is suitable for wavelength 1852500nm and full spectrum fused silica is suitable for 2603500nm besides the instock slides listed below, we also offer custom made slides. I wondered if the cheaper glass would be much of a handicap for imaging and as ive never used anything other than a refractor for imaging, im really looking for. Both fused quartz and fused silica are at least 99. It has high stability and resistance to thermal shock over large temperature excursions, wide temperature operating range and high laser damage threshold. Glass codes 7979, 7980, and 8655 are high purity noncrystalline silica glasses with excellent optical qualities. Apollo skylab 7374, mir iss 98xxxx shuttle orion only one unexpected failure during an apollo window proof test. Due to fused silicas low thermal conductivity and excellent thermal shock resistance, it. Fused silica is used for viewing windows, being transparent to wavelengths from around 0. Fused silica vs fused quartz vs quartz vs amorphous silica. Cm scientific, formerly composite metal services, was established in 1980 to supply specialised scientific laboratory consumables and equipment. Ohara also supplies natural quartz made from highpurity crystals. Everybody agrees that fused silica and fused quartz are amorphous noncrystalline glass made only from silicon dioxide sio 2, but beyond that there is no universally agreed upon definition. Optical materials, bk7, fused silica, sapphire, caf2, mgf2.
It contains general information for the determination and evaluation of important glass properties and also informs about specific chemical and physical characteristics and possible applications of the commercial technical glasses produced by schott. This is one of the most frequently asked questions by our customers. Our revolutionary furnace design helps prevent raw silica sand from becoming contaminated during processing, resulting in a product that is 99. Fused silica is formed by chemical combination of silicon and oxygen. The fused silica blocks are cut into wafers, and the wafers finally polished. You can access an abbediagram in pdf format as well as an overview of all of our glass types optical glass overview and optical glass overview zemax. Shaping of the fused silica products is achieved by pressing or slip casting in the presence of chemical binders. Fused silica wafers jgs1, jgs2, jgs3 grades refreactive index.
Lithosiltmq0 is characterized by its high threedimensional opti. It has a fairly low density among the glass and glassceramics in the database. There are four basic types of commercial silica glass. In the ultraviolet down to 195 nm, uv fused silica is a good choice. The resistance of a material to indentation is characterized by the indentation hardness. Schott technical glasses offers pertinent information in concise form. How to use glass substitution to optimize the glasses in your optical. Optische glaser seit uber 125 jahren fertigen wir in. Fused silica lattice what is the difference between fused quartz and fused silica. This makes them perfectly suited for a wide variety of demanding applications, including multiphoton imaging systems, and intracavity laser applications. Fused refers to the way the glassy mass is produced and in this regard it is more appropriate to use fused silica and not fused quartz although many people prefer not to see the difference. For applications in the visible and infrared up to about 2.
I wondered if the cheaper glass would be much of a handicap for imaging and as ive never used anything other than a refractor for imaging, im really looking for opinions. A new and improved fused silica radome is discussed. Ross optical has an inventory of over 800 sets of optical test plates that allows us to design, manufacture and deliver complete sets of optical components in a short period of time. These uncoated uvgrade fused silica planoconvex lenses are available in sizes ranging from o2 mm to o75 mm.
Glasses having a low refractive index in general also have a low dispersion behavior e. Below are just a small expample of the fused silica wafers that we have in stock. A wide variety of fused silica tube options are available. High quality silica glass vadprocess synthetic fused silica sk0 our company successfully developed synthetic fused silica sk0 as a result of significant improvements made to the conventional vad vaporphase axial deposition method of optical fiber manufacturing technology.
We offer many different grades of fused silica to support various product applications. Crystal quartz is a very useful material for fabrication of finished optics. In fact, many people use the terms fused silica and. The sio 2 dust formed hereby is fused to silica on a substrate.
With over 60 years dynasil fused silica is a leader and an authorized distributor of corning high purity fused silica hpfs 7980, 7979 ir, and ule 7972. Buy high quality and affordable fused silica glass via sales. Some may think fused silica is a simple material and there is little difference in which grade should be used. Materials with low thermal expansion and high transmission. Free of striations in any spatial direction, it is recommended for highend resolution requirements in such optical elements as prisms and lenses. Fused silica for investment casting refractory applications imerys produces several grades of coarse fused silica grains stuccos and powders flours for the investment casting and refractory industries. Both hydrous and anhydrous low oh content quartz with low bubbles and high heat resistance are available. Fused silica is a highpurity, noncrystalline material manufactured through oxidation of raw silica in a flame hydrolysis process, while fused quartz is fabricated by the melting of naturally occurring quartz. Schott ml q fused silica schott mlq0 is characterized by its high threedimensional optical homogeneity. This glass has superior transmission in both the uv and ir spectra, a very low dielectric coefficient and excellent properties where flourescence or. Fused silica is tough and hard and has a very low expansion. Round windows can be purchased from stock uncoated 185 nm 2. Fused silica is the glassy form of quartz and is thus isotropic. Match the deactivation of the fused silica tubing with the polarity of the injection solvent.
Materials data fused silica fused quartz esco optics. Compare prices on fused silica glass shop best value fused. Lithosiltmq is available in six different quality grades. The linos fthetaronar lenses are all treated with a. Each process yields specific characteristics optimized for use within a given range of the uv, visible and nearinfrared portions of. Fused silica workhorse material fused silica has been the historical material of choice. Bk7, uv fused silica, caf2ir and uv, sapphire, quartz and mgf2.
Fused quartz is produced by fusing melting highpurity silica sand, which consists of quartz crystals. Vesuvius provides engineered fused silica products used in glass melting furnaces for both molten glass contact and furnace superstructure. The basic raw materials for these products are silica glass also called quartz, and glassy set sio. Schott ag schott ag is a german glass manufacturer. Fused silica fused quartz fused silica is a glasstype material.
Hpfs 7979, 7980 and 8655 fused silica hpfs fused silica glasses are known throughout the industry for their consistent, repeatable performance. Our fused silica wafers are hpfs high purity fused silica 7980, uv grade fused silica wafers. Fused silica tubing guard columnsretention gaps sigma. May 28, 2018 supremax 33 vs fused silica posted in equipment. Schott also publishes a glass catalog schott optical glass datasheets, which is a standard reference for the properties of many optical glasses.
Fused silica uv gradesio2 specifications are available. The radome has a density equal to or greater than 95 percent of theoretical density, an average bend strength equal to or greater than 10 kpsi, a thermal expansion of about 0. Enjoy exclusive discounts and free global delivery on fused silica glass at aliexpress. Schott begins manufacturing primary mirrors for elt. This page shows summary ranges across both of them. The optical designs are optimized with respect to back reflections of the input beam, which significantly reduces the risk of damage to the galvo mirrors. Agi offers corning 7980 fused silica in optical, uv, krf, and arf grades. Applications include optical, biomedical, communications, laser manufacturing, aerospace avionics, semiconductor, fiber optic and electronics. Untreated fused silica tubing fused silica tubing sigma. Schott also publishes a glass catalog schott optical glass datasheets, which is a standard reference for. Extremely varied uses from medical to fire detection systems. High purity fused silica hpfs fused silica corning.
Fused silica uv gradesio2 specifications are available optical refractive index at n e 1. The dura silicaroll fused silica rollers are used as transport rollers for tempering flat glass,pdp solar and silicon steel industry and so on. Our fused silica wafers is a a high purity synthetic amorphous silicon dioxide. Everything you need to know in 6 minutes video innovation roundtable in china about the elt. Corning hpfs 7979, 7980, 8655 fused silica glass fab, inc. Fused silica is offered in many different grades to support various product applications.
High quality silica glass quartz ohara corporation. Linos fthetaronar lenses made of fused silica telecentric design wavelength nm focal length mm entrancebeam diameter at 1e. Schott to equip the main mirror of the worlds largest telescope with zerodur 4meter mirror blank cast for the elt project. Fused silica is perfect optical material due to its good uv and ir transmission, low coefficient of thermal expansion. Type ii is produced by fusing quartz crystal powder in a hightemperature flame. For caf2 we have adopted the schott fit used by epps for soar. Valley design east phoenix park business center 2 shaker road, bldg. Since 1960, dynasil fused silica has provided precision optical materials, including high purity synthetic fused silica and fused quartz products, to customers for a wide and everincreasing range of applications. Consult schott glass entire fused silica catalogue on directindustry. Southern african large telescope prime focus imaging. About 29% of these are quartz tubes, 0% are steel pipes. The sellmeier fit for fused quartz is a zemax fit of index data for heraeus.
Glass codes 7980, 7979, and 8655 are high purity noncrystalline silica glasses with excellent optical qualities. Ohara synthetic fused silica is produced by vaporphase axial deposition and provides ultrahigh purity, bubble free material. It differs from traditional glasses in containing no other ingredients, which are typically added to glass to lower the melt temperature. Supremax 33 vs fused silica equipment cloudy nights. These wafers show a high transparency in the ultraviolet spectral range. Compare prices on fused silica glass shop best value. Fused silica and other transparent window materials. Quartz glass and fused silica for optical applications heraeus. Normal varieties of fused silica contain water which gives strong absortion in the ir. Uv fused silica also has excellent transmission in the visible and infrared up to about 2. Optical transmission of fused silica wafers corning 7940.
Click on a material above or choose a schott or ohara part number, to see the spectral and the material properties. This technique results in an improved optical transmission in the deep ultraviolet. Uvgrade fused silica offers high transmission in the deep uv and exhibits virtually no laserinduced fluorescence as measured at 193 nm, making it an. Fused quartz or fused silica is glass consisting of silica in amorphous noncrystalline form. Synthetic fused silica is used in the manufacture of optical components, lasers, semiconductors, telecom equipment, electronics, scientific instruments, and an assortment of energy.
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