Polarization, which is an anti-glare coating that is used on sunglasses only. Many top sunglasses makers, including Maui Jim, will infuse their lenses with polarization and anti-reflective technologies in order to provide the brightest, clearest vision.

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fusedsilica中文

We manufacture custom optics for the UV, visible, and infrared wavelength ranges, primarily from large quartz blocks called boules. We can select the raw glass for low inclusions and bubbles. In addition, an index homogeneity of up to ≤ 0.5 ppm is available if this is a critical requirement for an application. Cutting the raw glass from the boule is the first step in the production of a quartz glass optic. After this process, the material is shaped, finely ground, and polished according to the specific surface requirements. In this way, our company produces UV-transparent substrate glasses, glass wafers, microscope slides, high-quality custom optics, and many other quartz glass products daily.

The Standard lens option includes DuraClear™, a premium anti-reflective treatment that lets in 99% of available light and improves clarity and contrast. Lenses coated with Duraclear help prevent eye strain and are easy to clean, thanks to the superhydrophobic coating.

Use warm, never hot, water and mild soap to clean your anti-glare-coated glasses. As is true for any eyeglass lenses, your primary objective when cleaning anti-glare lenses is to avoid scratching them.

In addition to the optical grade quartz glass described above, we also process a less sophisticated quartz type called fused quartz. Although this product is also commonly called quartz glass, it is clearly different as it is made by melting natural quartz crystals. As a result, it contains far more impurities and can't offer the homogeneity or outstanding optical performance of fused silica.

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Fused SilicaWafer

The enormous temperature range and thermal endurance of quartz glass are unparalleled. It can operate continuously up to 1000 °C and is highly resistant to thermal shock due to its very low coefficient of thermal expansion. As well, the chemical properties of quartz glass are remarkable. Its chemical resistance to acids exceeds that of almost all other glass types. It is durable and exceptionally resistant to salt solutions, alkalis, and water.

Mar 27, 2015 — The theoretical maximum angular aperture of light entering the front lens of an objective is 1800. This would give a θ value of 900 (half of the ...

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As high-purity fused silica is a block glass, there are usually no off-the-shelf standard thicknesses available. Hence, it must be individually specified and manufactured. However, we continuously grind and polish to different thicknesses and tolerances to offer our customers the best possible availability and short lead times. You can even order these with individual dimensions and take advantage of our 48-hour express production. Click below to start an inquiry:

Polarization is a fundamental property of light. It determines the oscillating directions of light during propagation.

Anti-glare coatings shield your eyes from external light sources, while anti-reflective coatings react to both external and internal light. Lenses with an anti-reflective coating also work better to filter blue-violet light from sunlight and indoor light. Whether you choose anti-glare or anti-reflective lenses, you’ll appreciate the benefits of reduced glare and reflections in your vision.

Premium anti-reflective treatments also include a superhydrophobic coating that repels dust and resists water, oil, and fingerprints so your lenses are easier to clean. FramesDirect.com offers premium anti-reflective treatment as part of both the Standard and Premium lens options.

An anti-reflective coating is available for all types of eyeglass lenses, including reading glasses. To include the premium AR treatment, choose either the Standard or Premium option when adding lenses to your frames. You can select these treatment options for single vision, progressive, bifocal, reader, or plano (non-prescription) lenses.

Using the same steps as you would clean regular eyeglass lenses: Wet your lenses with clean water or an approved eyeglasses cleaning solution. Using a clean microfiber cloth, gently wipe each side of the lens in a circular motion to remove residue. Repeat steps 1 and 2 until the lenses are clean.

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Fused quartz is typically used for the fabrication of high-temperature sight glasses, lamp housings, UV lighting or disinfection systems, clear furnace glasses, pressure-resistant windows, and other quartz glass components. For further details, specifications, and properties, please refer to our fused quartz datasheet. Please also look at the Quartz Glass FAQ page for help in selecting the right quartz glass material for your application.

These lower material grades are typically used for high-temperature applications where only sight glass quality is needed. As purity and deep UV transparency are of secondary importance in such use cases, this more economical material is often the best choice for such components. Although fused quartz is only suitable for less demanding applications, it has an almost identical coefficient of expansion, a similar heat resistance, and the same interesting thermal properties as the higher-grade materials. It also offers excellent chemical resistance and better UV-light transparency than most other glasses. Furthermore, it is capable of high infrared transmission and has the same crystal-clear appearance as optical quartz.

To request a quotation for windows, substrates, glass plates, or other optical quartz glass parts with individual dimensions, please select a thickness from the table or use the button below.

The minor disadvantage to an anti-reflective coating is that it can become marred or scratched over time. Clean your lenses properly and often in order to avoid scratching caused by normal wear and tear, and always store glasses in a case. Besides the minor cost increase the coating adds and a minimal chance for scratching, an AR coating offers no real disadvantages.

Anti-reflective coatings help to reduce eye strain and fatigue and increase comfort while using screens and driving. This is extremely important if you spend any significant time driving at night, whether commuting, working, or going out to dinner. With fewer reflections, more light can reach your eyes, improving visual acuity and reducing many risks associated with nighttime driving.

How to Clean Anti-Glare-Coated Glasses Use warm, never hot, water and mild soap to clean your anti-glare-coated glasses. As is true for any eyeglass lenses, your primary objective when cleaning anti-glare lenses is to avoid scratching them. Using the same steps as you would clean regular eyeglass lenses: Wet your lenses with clean water or an approved eyeglasses cleaning solution. Using a clean microfiber cloth, gently wipe each side of the lens in a circular motion to remove residue. Repeat steps 1 and 2 until the lenses are clean. Available Anti-Reflective Treatments and Lens Options An anti-reflective coating is available for all types of eyeglass lenses, including reading glasses. To include the premium AR treatment, choose either the Standard or Premium option when adding lenses to your frames. You can select these treatment options for single vision, progressive, bifocal, reader, or plano (non-prescription) lenses. Standard Lens Option The Standard lens option includes DuraClear™, a premium anti-reflective treatment that lets in 99% of available light and improves clarity and contrast. Lenses coated with Duraclear help prevent eye strain and are easy to clean, thanks to the superhydrophobic coating. Premium Lens Option The Premium lens option includes Blue-Violet Light Filtering with BlueReflect™ to filter blue-violet light, as well as premium anti-reflective treatment and UV protection. BlueReflect provides clearer vision while you use digital devices. Buying your glasses online can be less expensive than visiting your local optician, and we make the process simple. Are Anti-Reflective Lenses Worth It? For most glasses wearers the benefits of lenses with an anti-reflective coating far outweigh the disadvantages. The long lifespan and everyday vision improvements AR-coated lenses offer are well worth the minor addition to the overall price tag of a new pair of glasses. Learn about the other lens options available at FramesDirect.com, or call one of our certified opticians at 1-800-248-9427 (Int'l: +1 513-765-2513) to find out more about anti-reflective coating or to add it to your lenses. Reviewed by Sonia Kelley, OD, MS on June 27, 2023 Shop All Eyeglasses

Fused silica

Our company processes raw materials from leading manufacturers in the quartz glass industry (Corning, Heraeus, Tosoh, SCHOTT, Saint-Gobain Quartz, Shin-Etsu, GE Quartz, and many others). More detailed properties, datasheets, and information on all glass qualities we process are available on request.

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Our microscope objective lenses include a variety of infinity-corrected visible imaging objectives, reflective microscope objectives for broadband applications, ...

Learn about the other lens options available at FramesDirect.com, or call one of our certified opticians at 1-800-248-9427 (Int'l: +1 513-765-2513) to find out more about anti-reflective coating or to add it to your lenses.

Edmund

Optical quartz glass is a synthetic, high-purity fused silica produced by a flame hydrolysis melting process. The crystal-clear amorphous material contains virtually no impurities, consisting only of silicon and oxygen (silicon dioxide). This unique type of quartz glass provides over 80% UV light transmission at a wavelength of 185 nm.

For most glasses wearers the benefits of lenses with an anti-reflective coating far outweigh the disadvantages. The long lifespan and everyday vision improvements AR-coated lenses offer are well worth the minor addition to the overall price tag of a new pair of glasses.

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The primary purpose of an anti-reflective (AR) treatment for prescription eyewear lenses is to allow more light to pass through the lens and therefore reduce glare. The coating reduces reflections on the lens to reduce distractions and allow you to see more of what’s ahead of you. It also increases your eye comfort while you use digital screens, read, or drive and helps prevent eye fatigue. We strongly recommend an anti-reflective treatment for all lenses.

On average, anti-reflective lens coatings last about two years, but with proper care an AR coating should last the life of the lens. How to Clean Anti-Glare-Coated Glasses Use warm, never hot, water and mild soap to clean your anti-glare-coated glasses. As is true for any eyeglass lenses, your primary objective when cleaning anti-glare lenses is to avoid scratching them. Using the same steps as you would clean regular eyeglass lenses: Wet your lenses with clean water or an approved eyeglasses cleaning solution. Using a clean microfiber cloth, gently wipe each side of the lens in a circular motion to remove residue. Repeat steps 1 and 2 until the lenses are clean. Available Anti-Reflective Treatments and Lens Options An anti-reflective coating is available for all types of eyeglass lenses, including reading glasses. To include the premium AR treatment, choose either the Standard or Premium option when adding lenses to your frames. You can select these treatment options for single vision, progressive, bifocal, reader, or plano (non-prescription) lenses. Standard Lens Option The Standard lens option includes DuraClear™, a premium anti-reflective treatment that lets in 99% of available light and improves clarity and contrast. Lenses coated with Duraclear help prevent eye strain and are easy to clean, thanks to the superhydrophobic coating. Premium Lens Option The Premium lens option includes Blue-Violet Light Filtering with BlueReflect™ to filter blue-violet light, as well as premium anti-reflective treatment and UV protection. BlueReflect provides clearer vision while you use digital devices. Buying your glasses online can be less expensive than visiting your local optician, and we make the process simple. Are Anti-Reflective Lenses Worth It? For most glasses wearers the benefits of lenses with an anti-reflective coating far outweigh the disadvantages. The long lifespan and everyday vision improvements AR-coated lenses offer are well worth the minor addition to the overall price tag of a new pair of glasses. Learn about the other lens options available at FramesDirect.com, or call one of our certified opticians at 1-800-248-9427 (Int'l: +1 513-765-2513) to find out more about anti-reflective coating or to add it to your lenses. Reviewed by Sonia Kelley, OD, MS on June 27, 2023 Shop All Eyeglasses

The Premium lens option includes Blue-Violet Light Filtering with BlueReflect™ to filter blue-violet light, as well as premium anti-reflective treatment and UV protection. BlueReflect provides clearer vision while you use digital devices. Buying your glasses online can be less expensive than visiting your local optician, and we make the process simple.

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Due to its excellent electrical properties, quartz glass is also ideal for solutions in semiconductor technology. Because currents can only flow through mobile ionic impurities that are marginally present in quartz glass, it offers exceptionally high electrical insulation, which is essential for the fabrication of many electronic devices and semiconductors.