Featured Precision Fused Silica Windows & Optical Quartz Components
Direct from our specialized high-temperature melting and CNC cold-processing facilities in Donghai, China. Custom manufactured to DIN/ISO 10110 standards, providing high laser damage thresholds, sub-nanometer surface roughness, and broadband optical transmission for Encamp instrument engineers.
Round Quartz Plate Disc Fused Silica Clear Polished Custom Diameter
Quartz Tube for Ozone Generator High Purity Fused Silica Ozone Free
Quartz Plate with Center Hole Fused Silica Clear Polished Custom Size
Quartz Observation Window Plate Fused Silica High Pressure Clear
Quartz Substrate Plate for Semiconductor Fused Silica Clear Polished
CNC Machined Quartz Plate Fused Silica Complex Shape Custom Size
Quartz Viewport Glass Plate Vacuum Chamber Fused Silica Custom Size
Quartz Glass Sheet 10mm 20mm 30mm Thick Fused Silica Heat Resistant
Optical Grade Selection: Synthetic Fused Silica vs. Natural Fused Quartz for Viewports
Selecting optical window materials for harsh physical environments requires an in-depth understanding of transmission spectrums, intrinsic absorption bands, and trace elemental chemistry. While both fused silica and fused quartz share the foundational SiO2 formula, their manufacturing pathways yield distinctly divergent performance metrics in critical spectroscopy, laser processing, and high-vacuum observation applications.
Deep UV Synthetic Fused Silica (JGS1 / Suprasil Equivalent)
Synthesized through the chemical vapor deposition (CVD) of high-purity silicon tetrachloride (SiCl4) reacted in a hydrogen-oxygen flame. It is completely bubble-free, possessing virtually non-detectable metallic impurity levels (<1 ppm total metals). It provides extraordinary transmission across 185 nm to 2500 nm, completely devoid of coloration or fluorescence under intensive UV exposure.
Optical Grade Fused Quartz (JGS2 / Homosil Equivalent)
Manufactured by electric fusion or oxyhydrogen flame fusion of purified natural crystalline quartz. JGS2 exhibits exceptional transmission in the visible and near-infrared regions (220 nm to 2600 nm). While it exhibits a characteristic OH− absorption band around 2730 nm, its outstanding mechanical rigidity, dimensional integrity, and lower cost profile make it the benchmark viewport glass for thermal chambers.
Infrared Grade Fused Silica (JGS3 / Infrasil Equivalent)
Produced through specialized vacuum electric melting processes designed specifically to desorb hydroxyl groups (OH content <5 ppm). JGS3 eliminates the pronounced infrared absorption valley at 2.7 μm, delivering high optical transparency extending from 260 nm deeply through 3500 nm in the mid-wave infrared (MWIR) spectrum, making it essential for pyrometry and IR sensing.
Comprehensive Physical, Thermal & Optical Properties
Engineers in Encamp demanding predictable behavior under mechanical loading, cryogenic alpine transitions, or high-temperature furnaces can reference our verified metrology data.
| Property Parameter | Synthetic Fused Silica (JGS1) | Optical Fused Quartz (JGS2) | IR Fused Silica (JGS3) | Standard Borosilicate (Reference) |
|---|---|---|---|---|
| Purity (SiO2 Content) | ≥ 99.9999% (<0.5 ppm metals) | ≥ 99.99% (≤20 ppm metals) | ≥ 99.995% | ≈ 81% (with B2O3, Na2O) |
| Transmission Range (T > 80%) | 185 nm – 2500 nm | 220 nm – 2600 nm | 260 nm – 3500 nm | 350 nm – 2000 nm |
| Refractive Index (nd @ 587.6 nm) | 1.4585 | 1.4584 | 1.4586 | 1.4730 |
| Thermal Expansion (0–300°C) | 5.5 × 10−7 / °C | 5.5 × 10−7 / °C | 5.5 × 10−7 / °C | 32.5 × 10−7 / °C |
| Continuous Service Temperature | 1100 °C | 1150 °C | 1100 °C | 450 °C |
| Thermal Shock Resistance (ΔT) | > 1000 °C (Water Quench) | > 1000 °C (Water Quench) | > 1000 °C (Water Quench) | ≈ 150 °C |
| Laser Damage Threshold (1064nm, 10ns) | > 25 J/cm2 | > 15 J/cm2 | > 18 J/cm2 | < 5 J/cm2 |
| Dielectric Constant (1 MHz) | 3.75 | 3.75 | 3.75 | 4.60 |
Localized Application Scenarios across Encamp & Alpine High-Tech Hubs
Encamp, situated centrally within the Principality of Andorra and linking the high-altitude Pyrenean research networks between France and Spain, hosts expanding instrumentation, environmental spectroscopy, clean energy test installations, and specialized laboratory clusters.
Alpine Environmental & Atmospheric Viewports
At high altitudes exceeding 1,300 meters, Encamp facilities experience intense solar ultraviolet flux and sharp diurnal temperature swings. Optical stations utilize our UV-grade fused silica windows (JGS1) inside automated solar radiometers, differential optical absorption spectroscopy (DOAS) units, and LIDAR transceivers to track stratospheric ozone and alpine aerosol dynamics without thermal defocusing.
Sub-Zero Cryogenic & High-Vacuum Chambers
Engineering laboratories conducting thermal stress tests for aerospace components utilize our thick fused quartz discs (10mm to 30mm) as vacuum chamber viewports. With near-zero thermal expansion (0.55×10−6/K), the windows preserve precise hermetic seals with ConFlat (CF) flanges across rapid transitions from −60°C alpine winter storage to +500°C chamber bakeouts.
Hydroelectric & Water Treatment Disinfection
Andorra's pristine mountain water management networks rely heavily on industrial UV water purification reactors. Our high-purity ozone-free fused silica sleeves and viewport observation plates ensure stable 254 nm germicidal irradiation transmission exceeding 90%, preventing solarization fouling while withstanding hydraulic operating pressures up to 1.6 MPa.
Photonic Sensors & Micro-Machining Stations
Regional prototyping labs and precision engineering shops in Encamp require anti-reflective coated fused silica laser protective windows. Capable of handling high peak-power nanosecond Nd:YAG and femtosecond fiber lasers (1064 nm and 532 nm harmonics), our double-side polished plates safeguard sensitive galvanometric scan heads from spatter and plasma blowback.
Market Trends & Sourcing Optimization for Encamp Procurement Heads
The procurement landscape for specialized optics across Andorra, France, and Spain is evolving rapidly under dual pressures of technological miniaturization and supply chain resilience. Procurement officers in the Encamp market increasingly favor factory-direct manufacturing partnerships over local intermediary distributors to gain verifiable technical control and achieve drastic cost reductions.
Direct-to-Manufacturer Sourcing Shifts
Historically, Pyrenean scientific equipment integrators bought standard catalog optical components through Pan-European optical houses at steep 300% to 500% markups. Today, engineering teams in Encamp communicate direct CAD files (DXF, STEP, DWG) directly to Tier-1 Chinese manufacturers like VEZLO Quartz, reducing prototype turnaround down to 7–10 days while cutting unit expenditures by more than 55%.
Stringent Non-Destructive Metrology Demands
As optical systems transition toward deep-ultraviolet (193 nm) lithography fixtures and hyperspectral analysis, buyers in Encamp require 100% certified surface metrology reports. Our plant provides Zygo laser interferometric wavefront analysis (λ/10 peak-to-valley documentation), spectrophotometer transmission graphs, and coordinate measuring machine (CMM) dimensional logs with each dispatched export lot.
Custom Geometries & Tight CNC Tolerances
Standard circular and rectangular windows are rapidly being superseded by complex, bespoke opto-mechanical geometries. Requirements for countersunk step bores, through-drilled central holes, o-ring sealing grooves, and perimeter notch cutouts on fused silica plates are met via 5-axis ultrasonic CNC diamond tooling with repeatability under ±0.01 mm.
VEZLO Quartz: Rooted in China's Quartz Capital with Global Reach
VEZLO Quartz Products Co., Ltd. operates an expansive 50-mu (≈33,000 m²) production base in Donghai County, Jiangsu Province—globally acknowledged as the premier hub for high-purity natural silica reserves and integrated fused glass fabrication. Backed by RMB 10 million in fixed assets, our facility integrates raw mineral beneficiation, continuous thermal tube drawing, vacuum electric fusion, flame polishing, and 5-axis CNC machining under one certified quality ecosystem.
Our engineering excellence has been recognized through the prestigious Jiangsu Provincial Science & Technology Support Project for developing 320 mm high-purity quartz tubes for microelectronics. Furthermore, our proprietary 520 mm diameter ultra-pure fused quartz cylinder has successfully passed the preliminary review for Chinese National New Products, establishing unmatched capability in large-aperture observation viewports.
Frequently Asked Questions for Encamp Optical Procurement
Technical, logistical, and commercial inquiries answered by our senior opto-mechanical engineering staff.
How do you ensure safe international delivery of fragile quartz windows to Encamp, Andorra?
What are the customs and import procedures for shipping from China to Encamp?
Can you fabricate custom quartz viewports to match ConFlat (CF) and ISO-KF vacuum flanges?
How do I verify whether my application in Encamp requires JGS1, JGS2, or JGS3 fused silica?
- Choose JGS1 (Synthetic Deep-UV Fused Silica): If working in deep ultraviolet light (185 nm to 260 nm), such as UV lithography, UV sterilization analysis, excimer lasers, or fluorescence imaging where bubble-free, zero-fluorescence transmission is mandatory.
- Choose JGS2 (Optical Fused Quartz): If your wavelength spans 260 nm to 2000 nm in the standard visible to near-infrared spectrum and budget efficiency is required for high-temperature sight glasses, industrial furnaces, or solar simulators.
- Choose JGS3 (IR Fused Silica): If your sensing or imaging system operates in the 2000 nm to 3500 nm range and requires complete freedom from the 2730 nm OH absorption band, such as infrared thermometers, thermal imaging viewports, or CO2 laser systems.
What standard optical surface quality and flatness tolerances do you achieve?
What is the typical production and quotation lead time for bespoke CNC quartz parts?
Accelerate Your Project with VEZLO Precision Quartz Engineering
Submit your CAD drawings, dimensional parameters, or technical requirements. Our bilingual optical engineers will evaluate your specification and deliver a formal quotation within 2 hours.