Drawing-based fabrication, sub-aperture polishing, and customized thermal quartz components built to stringent ISO 10110 standards, ready for dispatch to Norwegian engineering hubs.
In modern photonics, precision subsea telemetry, and process analytical technology (PAT), the selection of prism substrates dictates the operational limits of the entire optical train. As an established manufacturer and global exporter catering directly to industrial buyers, system integrators, and marine technology laboratories across Drammen, Viken, and the wider Oslofjord region, Lianyungang Zelvo Quartz Products Co., Ltd. delivers high-grade synthetic fused silica (JGS1) and natural high-purity fused quartz (JGS2/JGS3) optical prisms engineered to solve critical optical dispersion, thermal deflection, and laser damage challenges.
Unlike commercial optical glasses such as N-BK7 or dense flint formulations, fused silica consists entirely of non-crystalline silicon dioxide (SiO₂) in an amorphous tetrahedral network. This specific atomic configuration grants synthetic quartz prisms an exceptionally low thermal expansion coefficient ($5.5 \times 10^{-7}\text{/K}$ between $-50^\circ\text{C}$ and $+200^\circ\text{C}$), practically eliminating wavefront distortion under harsh thermal swings encountered in Nordic marine inspection and subsea offshore exploration.
Optical quartz prisms manufactured by Zelvo Quartz encompass Right-Angle Prisms, Porro Prisms, Amici Roof Prisms, Dove Prisms, Penta Prisms, and Littrow Dispersion Prisms. Each prism geometry is shaped via computerized diamond grinding, precision double-sided polishing, and verified through Zygo He-Ne laser interferometry to ensure transmitted wavefront distortion adheres strictly to $\lambda/10$ @ 632.8 nm with surface roughness $Ra \le 0.5\text{ nm}$.
The following technical baseline is utilized by our optical design team when advising research engineers and procurement officers in the Drammen and Kongsberg engineering corridors:
| Property / Specification | UV Fused Silica (JGS1 / Corning 7980) | Optical Fused Quartz (JGS2) | Infrared Fused Quartz (JGS3 / Infrasil) |
|---|---|---|---|
| Transmission Spectrum | 185 nm – 2100 nm (DUV to NIR) | 220 nm – 2500 nm (Standard Optical) | 260 nm – 3500 nm (Deep Infrared) |
| Hydroxyl ($\text{OH}^-$) Content | 800 – 1200 ppm (High OH) | 100 – 200 ppm (Medium OH) | < 5 ppm (Water-free IR) |
| Refractive Index ($n_d$ @ 587.6 nm) | 1.45846 | 1.45845 | 1.45840 |
| Abbe Number ($V_d$) | 67.8 | 67.8 | 67.9 |
| Laser Damage Threshold (LDT) | > 15 J/cm² (1064 nm, 20 ns, 20 Hz) | > 7.5 J/cm² (1064 nm, 20 ns, 20 Hz) | > 10 J/cm² (1064 nm, 20 ns, 20 Hz) |
| Birefringence Constant | ≤ 2 nm/cm (Ultra-low strain) | ≤ 5 nm/cm | ≤ 4 nm/cm |
| Primary Application in Drammen | Subsea UV LiDAR & Ocean Fluorometry | Harsh Marine CEMS & Boiler Windows | Industrial Gas Sensing & IR Thermography |
Strategically situated along the Drammenselva river and linked directly to the marine logistics of Drammen Havn and the industrial clusters of Kongsberg and Horten, optical quartz prisms perform vital functions in four mission-critical sectors.
Drammen serves as an engineering logistics gateway for subsea robotics operating in deep Norwegian fjords and offshore North Sea platforms. Optical right-angle and retroreflector prisms integrated into titanium subsea sensor housings must withstand hydrostatic pressures exceeding 60 MPa (600 bar / 6000 m ocean depth). Our synthetic fused quartz prisms feature chamfered edges and polished critical surfaces that eliminate mechanical micro-fissures, preventing catastrophic implosions under compressive marine stress while guiding multi-beam bathymetric laser lines with zero beam deviation.
In response to the strict sulfur emission control areas (SECA) enforced by the Norwegian Maritime Authority (Sjøfartsdirektoratet) and IMO Tier III regulations, cargo vessels passing through Drammen Port rely on optical absorption gas scrubbers. Our high-purity quartz dispersion prisms resist concentrated sulfurous acid, nitrogen oxides, and exhaust temperatures of up to 450°C. They maintain unclouded spectrophotometric UV-Vis baseline stability inside stack probes without solarization or surface etching.
Along the Drammenselva manufacturing axis, transitioning bio-refineries, pulp chemical producers, and specialized pharmaceutical plants employ in-line Raman and Fourier-transform infrared (FTIR) spectroscopy. Zelvo Quartz supplies customized quartz ATR (Attenuated Total Reflection) prisms and equilateral dispersing prisms that ensure complete inertness to polar organic solvents, strong alkaline pulping liquors, and abrasive slurries, providing uninterrupted 24/7 molecular analysis.
How the green maritime transition, clean-tech manufacturing, and defense-grade photonics are driving advanced demand for fused quartz optics across Eastern Norway.
With Drammen positioning itself as a zero-emission transport and maritime logistics center, test facilities for green ammonia and cryogenic hydrogen propulsion are expanding. Optical quartz prisms serve as optical combustion monitors that detect ultra-weak hydroxyl radical chemiluminescence (OH* emission at 308 nm), demanding deep-UV transmission without baseline degradation.
High-precision instrumentation developers in Viken are systematically phasing out Schott BK7 and standard borosilicate in subsea sensor heads due to pressure-induced birefringence and cold-water refractive shifts. Synthetic fused quartz has become the de facto Scandinavian industry standard to guarantee absolute optical phase stability under sub-zero marine ambient conditions.
The manufacturing facilities in Drammen's industrial estates (such as Kobbervikdalen and Lierstranda) are increasingly adopting high-power multi-kilowatt fiber lasers (1064 nm) for robotic metal cutting and automated shipbuilding welding. Our anti-reflective coated fused quartz right-angle prisms withstand extreme beam densities without thermal lensing or catastrophic focal shift.
Direct manufacturing origin from Donghai—China's Crystal Capital—combined with ISO-certified fabrication, rapid Scandinavian logistics, and senior optical engineering oversight.
Located in Donghai, Jiangsu, we control raw quartz purification, providing pure 99.99% SiO₂ with total metal impurity < 15 ppm.
Full support for CAD/STEP files. Advanced laser drilling, ultrasonic grooving, precision cutting, and custom angular geometry.
We eliminate pilot-stage barriers for R&D teams and universities in Norway by offering custom single-piece fabrication with full QC reports.
Custom multi-layer suspended foam packaging, vacuum-sealed barrier pouches, and reinforced wooden crates ensuring 100% breakage-free arrival.
Clear, direct answers regarding Norwegian customs clearance, thermal limits, surface metrology, and lead times to the Greater Oslo region.
We offer Door-to-Door (DDP) and Delivered at Place (DAP) services directly to industrial facilities in Drammen, Lier, and Kongsberg. Critical prototype batches are shipped via expedited express air freight (DHL/FedEx/UPS) arriving at Oslo Airport (OSL Gardermoen) and delivered to Drammen within 4 to 6 business days. For bulk production runs, we coordinate ocean container freight routed through the Port of Drammen (Drammen Havn) or Oslo Port with complete customs clearance documentation.
All commercial shipments include verified HS Codes (such as 7002.31 for fused quartz tubes/rods and 9001.90 for unmounted optical prisms/elements), commercial invoices, packing lists, and Certificates of Origin (COO). When ordering under DDP Incoterms, Zelvo Quartz coordinates with local Norwegian customs brokers to settle import duties and Norwegian VAT (25% Merverdiavgift - MVA), enabling a frictionless receipt process for your accounting department.
Yes. High-purity fused silica exhibits virtually near-zero thermal shock expansion ($5.5 \times 10^{-7}\text{/K}$). Unlike soda-lime or borosilicate glass, an optical quartz prism from Zelvo Quartz can be subjected to violent temperature gradients—such as being heated to 1100°C and plunged into ice water—without mechanical cracking or micro-fracturing, making it ideal for winterized marine exhaust monitoring and flare stack spectroscopy.
We provide high-durability thin-film coatings applied via Ion-Assisted Electron Beam Evaporation (IAD). Options include Broadband Anti-Reflective (BBAR) coatings for 350–700 nm, 650–1050 nm, or 1050–1620 nm with average reflectance $R < 0.5\%$, as well as high-reflectivity dielectric and metallic mirror coatings (Gold, Silver, Enhanced Aluminum). All optical coatings conform to MIL-PRF-13830B and ISO 9211 environmental testing for salt fog, humidity, and abrasion resistance.
Every shipment dispatched to Norway is accompanied by an inspection certificate detailing physical dimensional measurements, angular deviation (measured via high-resolution autocollimators down to $\pm 2$ arcseconds), surface flatness interferograms (Zygo He-Ne), and spectrophotometer transmission curve traces (190 nm to 3200 nm). Raw material melt lots are traceable via batch-specific ICP-MS purity analysis.
We maintain a flexible manufacturing schedule specifically structured for academic, defense, and industrial R&D. Starting from a Minimum Order Quantity of just 1 piece, our engineering staff provides Design for Manufacturability (DFM) reviews on technical drawings within 2 hours, recommending cost-effective tolerances and bevel geometry before committing to spindle polishing and coating runs.
Whether you require custom-angle UV-grade synthetic silica dispersion prisms, high-pressure subsea viewports, or laser-drilled fused quartz reactor hardware, Zelvo Quartz delivers verified material purity, sub-arcsecond precision, and expedited international logistics.