Transparent quartz window slice and ultraviolet quartz slice are optical elements precisely processed by using high-purity fused silica. With its excellent optical transmittance (especially in the deep ultraviolet band), extremely low coefficient of thermal expansion, and outstanding chemical stability, these products have become indispensable window materials in high-end optical systems. Whether as an observation window for vacuum chambers or a key lens for UV curing and lithography equipment, our quartz plates can ensure long-term stability of optical performance in extreme environments.

Frequently Asked Questions (FAQ)

Q1: What is the difference between transparent quartz and ordinary soda lime glass or optical glass?

A: Ordinary glass usually contains impurities, absorbs ultraviolet light, and has a high coefficient of thermal expansion, making it prone to explosion when heated. Our quartz plate has a purity of over 99.99%, with extremely high transmittance in the 185nm-2500nm wavelength range, and a temperature resistance of over 1100 ℃. Its thermal stability far exceeds that of ordinary glass.

Q2: Can you provide customized non-standard sizes?

A: Yes, customization is our core business. We can process various shapes (circular, square, trapezoidal, irregular holes, etc.) according to the drawings, with a thickness range from 0.1mm thin sheet to 50mm thick plate, and an accuracy of ± 0.01mm.

Q3: Can the surface of ultraviolet quartz be coated?

A: Okay. We can provide coating services such as anti reflective film (AR film), reflective film, or conductive film (ITO) to further optimize optical performance at specific wavelengths.

Resolve your core challenge

From the perspective of users, our products mainly solve the following problems for you:

Solving the problem of "unclear": In UV lithography, sterilization, or fluorescence analysis, ordinary glass blocks light, while our UV quartz film ensures the non-destructive transmission of high-energy UV light, ensuring the accuracy of experimental or production data.

Solving the problem of "unbearable": Ordinary materials are prone to rupture due to thermal shock in high-temperature furnace observation windows or laser chambers. Quartz material is resistant to high temperatures and thermal shock, solving the maintenance problem of frequent window replacement.

Addressing the issue of 'mismatch': For non-standard devices, standard products on the market often do not match in size. We provide one-on-one precision machining services to ensure that our products are perfectly compatible with your device interface.

Material Properties

Optical performance: UV grade quartz transmittance ≥ 90% (@ 254nm), visible light transmittance ≥ 92%.

Thermal properties: The softening point is about 1730 ℃, the coefficient of thermal expansion is extremely low (5.5 × 10 ⁻⁷ cm/cm ℃), and it can withstand severe thermal shock.

Chemical properties: Except for hydrofluoric acid, it is resistant to most acidic and alkaline corrosion, and its corrosion resistance is 30 times that of stainless steel and 10 times that of ceramics.

Processing capability and customized specifications

We are well aware of the strict precision requirements of different devices and provide comprehensive customized services:

Parameter project specification range/capability

Dimensional tolerance, length/diameter tolerance can be controlled within ± 0.05mm

Thickness range: 0.1mm-100mm (both ultra-thin and ultra-thin can be processed)

Surface quality: Scratches/dents: 60-40, 40-20, 10-5 optional

Parallelism: up to 3 arc seconds (3 inches)

Flatness: λ/4 @ 632.8nm (highest accuracy)

Shape processing: circular, rectangular, square, trapezoidal, perforated, chamfered, edged

The value brought by product advantages

High transmittance value: Ensure maximum output of light source energy, improve detection sensitivity or curing efficiency.

High flatness value: reduces optical path distortion, ensures clear imaging, and minimizes wavefront distortion.

High cleanliness value: Ultra clean cleaning packaging, suitable for cleanroom environments with Class 100 or even higher standards.

Application Fields and Solutions

Semiconductors and Photolithography

Solution: The lithography machine light source requires extremely high purity ultraviolet light transmission.

Solution: Our UV quartz wafers have extremely low inclusions and gas pockets to prevent light scattering and ensure lithography accuracy.

Optical instruments and lasers

Problem solved: High power lasers are prone to burning ordinary lenses.

Solution: Quartz's high laser damage threshold makes it the preferred substrate for laser beam expanders and reflectors.

Vacuum and high temperature observation

Problem solved: Vacuum furnaces or reaction vessels require observation windows that are pressure resistant and high-temperature resistant.

Solution: Thickened quartz window panels combined with precision polishing can withstand pressure differences and clearly observe internal reactions.

Why Choose Us&Customer Cases

Reasons for choosing us

Source manufacturer: No intermediaries, direct communication with technical engineers, low communication costs, fast response speed.

Global supply: With mature export packaging and logistics experience, our products are exported to Europe, America, Japan, South Korea and other places.

Customer Application Case (Anonymous)

Case 1: A European semiconductor testing equipment supplier

Requirement: The customer is developing a new type of wafer defect detector and requires a batch of ultra-thin ultraviolet quartz wafers with dimensions of 50mm × 10mm and a thickness of only 0.5mm, with no broken edges and extremely high parallelism.

Challenge: Ultra thin films are prone to deformation or breakage during processing, and their parallelism is difficult to control.

Solution: Our technical team uses special fixture technology and double-sided grinding and polishing technology to successfully control parallelism within 5 arc seconds, and the edges are finely chamfered with C0.2.

Result: The sample passed the customer's testing in one go and has now become their long-term supplier, with a cumulative supply of over 5000 pieces.

Case 2: A large water treatment UV sterilization system manufacturer

Requirement: Quartz casing windows for large sewage treatment plants, which need to be immersed in corrosive liquids for a long time and withstand high-intensity ultraviolet radiation.

Challenge: Competitors often encounter problems such as surface fogging and decreased light transmittance, resulting in reduced sterilization efficiency.

Solution: We provide high-purity gas melted quartz material and have undergone special surface acid washing treatment, greatly improving its corrosion resistance.

Result: The customer feedback shows that the product remains as bright as new after two years of operation, with no significant decrease in light transmittance, significantly reducing maintenance and replacement costs.

Whether you need standard UV quartz plates or challenging customized processing of irregular shapes, we can provide you with professional optical solutions. Welcome to contact us anytime for free quotes and technical drawing evaluations!

Luverre Quartz manufactures and sells a wide range of high quality quartz glass, including quartz tubes, quartz plates, quartz rods, quartz windows, quartz crucibles, quartz boats, quartz flanges, quartz beakers, quartz glass instruments, and more. We can meet all kinds of customized requirements for quartz glass products.