The Global Quartz Optical Windows Market was valued at USD 324.7 Million in 2024 and is projected to reach USD 489.2 Million by 2030, growing at a Compound Annual Growth Rate (CAGR) of 6.8% during the forecast period (2024–2030). This robust growth is fueled by escalating demand from the semiconductor manufacturing sector, advancements in laser technology, and the widespread adoption of optical instruments across medical, industrial, and research applications.

As industries increasingly rely on high-transmission, durable optical components, the companies manufacturing quartz optical windows are at the forefront of technological innovation. These components are critical for protecting sensitive equipment from harsh environments while ensuring minimal signal loss. In this blog, we profile the Top 10 Companies in the Quartz Optical Windows Industry—a group of specialized manufacturers and global suppliers shaping the future of photonics and precision optics.

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🔟 1. Thorlabs, Inc.

Headquarters: Newton, New Jersey, USA
Key Offering: UV Fused Silica Windows, IR Fused Silica Windows, Custom Coatings

Thorlabs is a dominant global player in the photonics industry, providing an extensive catalog of optical components, including high-precision quartz windows. The company serves research institutions, OEMs, and industrial customers with rapid prototyping and volume manufacturing capabilities.

Innovation & Market Position:

• Extensive in-house manufacturing and coating facilities

• Strong focus on R&D for new material grades and coatings

• Global distribution network ensuring quick delivery

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9️⃣ 2. Newport Corporation (MKS Instruments)

Headquarters: Irvine, California, USA
Key Offering: Precision Fused Silica Windows, Laser-Grade Optics, Optical Assemblies

Newport, as part of MKS Instruments, is a leader in photonics and motion control solutions. The company offers high-performance quartz optical windows designed for demanding applications in lithography, spectroscopy, and high-power laser systems.

Innovation & Market Position:

• Expertise in meeting stringent semiconductor industry specifications

• Advanced metrology for wavefront distortion and surface quality control

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8️⃣ 3. Edmund Optics

Headquarters: Barrington, New Jersey, USA
Key Offering: Standard and Custom Quartz Windows, AR/AR Coatings, Optical Flats

Edmund Optics is a leading supplier of optics, imaging, and photonics technology. The company provides a wide range of quartz windows with various diameters, thicknesses, and coating options, catering to a diverse global customer base from defense to life sciences.

Innovation & Market Position:

• Large inventory of standard components for immediate shipment

• Strong engineering support for custom optical solutions

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Quartz Optical Windows Market – View in Detailed Research Report

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7️⃣ 4. Knight Optical

Headquarters: Hythe, United Kingdom
Key Offering: UV-Transmitting Fused Silica, JGS1 & JGS2 Quartz, Laser Windows

Knight Optical specializes in the supply of precision optical components, including custom-made quartz windows. The company has a strong presence in European markets and serves sectors such as aerospace, medical, and industrial laser processing.

Innovation & Market Position:

• Focus on high-quality, bespoke optical components

• Stringent quality assurance protocols compliant with international standards

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6️⃣ 5. UQG Optics

Headquarters: Cambridge, United Kingdom
Key Offering: Optical Quartz Windows, Quartz Viewports, IR Materials

UQG Optics has over 50 years of experience in manufacturing and supplying high-quality optical components. The company offers quartz windows with excellent transmission from the deep UV to the near-IR spectrum, suitable for scientific and industrial applications.

Innovation & Market Position:

• Specialization in high-power laser optics and vacuum-compatible viewports

• Capability to produce complex shapes and tight tolerances

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5️⃣ 6. Newlight Photonics

Headquarters: Toronto, Canada
Key Offering: Custom Fused Silica Windows, Optical Components, Coating Services

Newlight Photonics is a specialized manufacturer of advanced optical components. The company focuses on providing tailored solutions for research and development projects, offering quartz windows with specific spectral performance and environmental durability.

Innovation & Market Position:

• Expertise in prototyping and low-to-medium volume production

• Collaborative approach with clients to solve complex optical challenges

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4️⃣ 7. Fleige Optik

Headquarters: Bochum, Germany
Key Offering: Precision Optics, Quartz Glass Components, Optical Systems

Fleige Optik is a German-based manufacturer known for its high-precision optical elements. The company produces quartz windows for use in measurement technology, medical engineering, and laser applications, emphasizing German engineering and quality.

Innovation & Market Position:

• Strong focus on the DACH region (Germany, Austria, Switzerland) market

• Integration of optical components into complex sub-assemblies

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3️⃣ 8. Spectrocell

Headquarters: Oreland, Pennsylvania, USA
Key Offering: UV-VIS-NIR Quartz Windows, Optical Components for Spectroscopy

Spectrocell designs and manufactures optical components specifically for spectroscopic applications. Their quartz windows are engineered for high transmission and low fluorescence, making them ideal for sensitive analytical instruments.

Innovation & Market Position:

• Niche focus on spectroscopy and analytical instrumentation markets

• Proprietary coating designs to minimize reflection losses

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2️⃣ 9. BORISUN

Headquarters: Beijing, China
Key Offering: Laser Optics, Quartz Plates, Optical Domes and Windows

BORISUN is a significant Chinese manufacturer of laser optics and optical materials. The company supplies quartz windows to a growing domestic market and international clients, competing on both quality and cost-effectiveness.

Innovation & Market Position:

• Rapid scaling of manufacturing capacity to meet global demand

• Increasing investment in advanced coating technologies

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1️⃣ 10. Alkor Technologies

Headquarters: Kharkiv, Ukraine (with international operations)
Key Offering: High-Precision Optics, Quartz & Glass Components, Optical Coatings

Alkor Technologies has a long-standing reputation in the optical industry, particularly in Eastern Europe. Despite geopolitical challenges, the company maintains expertise in producing high-quality quartz windows for scientific and industrial use.

Innovation & Market Position:

• Legacy of optical expertise from the Soviet-era scientific establishment

• Adapting supply chains to maintain international customer relationships

Get Full Report Here:
Quartz Optical Windows Market – View in Detailed Research Report

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🌍 Outlook: The Future of Quartz Optical Windows is Smarter and More Integrated

The quartz optical windows market is experiencing a transformative phase, driven by the relentless miniaturization and performance enhancement of electronic and photonic systems. While standard windows remain a volume driver, the industry is pivoting towards high-value, application-specific solutions with integrated functionalities.

📈 Key Trends Shaping the Market:

• Demand Surge from Semiconductor Lithography: The push for smaller transistor nodes (e.g., sub-3nm) requires quartz windows with exceptional homogeneity and low thermal expansion for EUV lithography systems.

• Advancements in Coating Technology: Development of robust, multi-layer anti-reflective (AR) coatings that enhance transmission and durability across broader wavelength ranges.

• Adoption in New Energy & Medical Sectors: Growing use in laser welding for battery manufacturing, endoscopic imaging systems, and advanced diagnostic equipment.

• Supply Chain Diversification: Companies are expanding manufacturing footprints beyond traditional hubs to mitigate geopolitical and logistical risks.

Get Full Report Here:
Quartz Optical Windows Market – View in Detailed Research Report

The companies profiled are not merely component suppliers; they are essential partners in innovation, enabling the next generation of technology that depends on clear, reliable, and precise optical pathways.